# What is CVE-2017-15361?

> CVE-2017-15361 is a medium-severity flaw (CVSS 5.9) in Trusted Platform Firmware from Infineon, published on 16 October 2017. It is not on the list of flaws known to be exploited today. The latest forecast puts its chance of use in the next 30 days at 9.8%. If you run an affected version, plan in the vendor’s fix.

Canonical page: https://www.precursorintelligence.com/what-is/cve-2017-15361

## At a glance

- **Verdict:** Plan it in. No sign of exploitation and a low forecast. Patch it in your normal update cycle.
- **Precursor Intelligence risk score:** 42 out of 100 (Medium); action: Plan remediation. Kept up to date as the evidence changes.
- **Severity:** Medium (CVSS 5.9 out of 10)
- **Known to be exploited:** No, not on the list of flaws known to be exploited today
- **Chance of use in the next 30 days:** 9.8% (latest exploit-likelihood forecast)
- **Published:** 16 October 2017
- **Record last updated:** 20 April 2025
- **Main product:** Trusted Platform Firmware from Infineon
- **Affected products:** 126

## What is CVE-2017-15361? In plain terms

It can be attacked from anywhere on the internet without logging in, and nobody has to click anything. If it works, the attacker can read data.

### The official description

The Infineon RSA library 1.02.013 in Infineon Trusted Platform Module (TPM) firmware, such as versions before 0000000000000422 - 4.34, before 000000000000062b - 6.43, and before 0000000000008521 - 133.33, mishandles RSA key generation, which makes it easier for attackers to defeat various cryptographic protection mechanisms via targeted attacks, aka ROCA. Examples of affected technologies include BitLocker with TPM 1.2, YubiKey 4 (before 4.3.5) PGP key generation, and the Cached User Data encryption feature in Chrome OS.

### What kind of flaw is it?

- Unknown: Unknown

### How an attack on it works

- Where an attacker can be: Anywhere on the internet
- How hard it is to pull off: Hard: conditions must line up
- Login needed first: No login needed
- Does someone have to click: No, nobody has to do anything
- What an attacker gets: Can read data

Severity vector: `CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N`

## Is CVE-2017-15361 being exploited? Not that we know of

It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 9.8%. That can change at any time, which is why we keep watching.

Exploit likelihood over the last 7 days: 9.8%, 9.8%, 9.8%, 9.8%, 9.8%, 9.8%, 9.8%.

### Timeline

- 16 October 2017: Published
- 20 April 2025: Record last updated
- 29 October 2025: Exploit likelihood fell
- 17 November 2025: Exploit likelihood jumped

### How Precursor Intelligence ranks it

CVE-2017-15361 scores **42 out of 100 (Medium)**, with the action "Plan remediation".

Every published flaw gets a risk score from 0 to 100, kept up to date as the evidence changes. Four things go into the score, from the one that counts most to the ones that count less:

- Evidence it is being exploited: biggest factor
- How severe it is: strong factor
- How widely exposed it is: smaller factor
- Threat activity around it: smaller factor

85 and above is Critical. Anything confirmed as exploited is always marked for an emergency patch, whatever its score. When this flaw matches software you track, it lands in your list with its score and the reasons behind it.

## Who is affected by CVE-2017-15361?

The published record lists 126 products.

- [Trusted Platform Firmware](https://www.precursorintelligence.com/product/infineon/trusted_platform_firmware) by [Infineon](https://www.precursorintelligence.com/vendors/infineon) (Operating system): 4.31, 4.32, 6.40, 133.32
- [100s Chromebook](https://www.precursorintelligence.com/product/lenovo/100s_chromebook) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Akoya S2013](https://www.precursorintelligence.com/product/medion/akoya_s2013) by [Medion](https://www.precursorintelligence.com/vendors/medion) (Hardware): version not specified
- [C1101 Chromebook](https://www.precursorintelligence.com/product/senkatel/c1101_chromebook) by [Senkatel](https://www.precursorintelligence.com/vendors/senkatel) (Hardware): version not specified
- [C720 Chromebook](https://www.precursorintelligence.com/product/acer/c720_chromebook) by [Acer](https://www.precursorintelligence.com/vendors/acer) (Hardware): version not specified
- [Chromebase](https://www.precursorintelligence.com/product/acer/chromebase) by [Acer](https://www.precursorintelligence.com/vendors/acer) (Hardware): version not specified
- [Chromebase](https://www.precursorintelligence.com/product/aopen/chromebase) by [Aopen](https://www.precursorintelligence.com/vendors/aopen) (Hardware): version not specified
- [Chromebase 22cb25s](https://www.precursorintelligence.com/product/lg/chromebase_22cb25s) by [Lg](https://www.precursorintelligence.com/vendors/lg) (Hardware): version not specified
- [Chromebase 22cv241](https://www.precursorintelligence.com/product/lg/chromebase_22cv241) by [Lg](https://www.precursorintelligence.com/vendors/lg) (Hardware): version not specified
- [Chromebase 24](https://www.precursorintelligence.com/product/acer/chromebase_24) by [Acer](https://www.precursorintelligence.com/vendors/acer) (Hardware): version not specified
- [Chromebit Cs10](https://www.precursorintelligence.com/product/asus/chromebit_cs10) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified
- [Chromebook](https://www.precursorintelligence.com/product/asi/chromebook) by [Asi](https://www.precursorintelligence.com/vendors/asi) (Hardware): version not specified
- [Chromebook](https://www.precursorintelligence.com/product/edxis/chromebook) by [Edxis](https://www.precursorintelligence.com/vendors/edxis) (Hardware): version not specified
- [Chromebook](https://www.precursorintelligence.com/product/hp/chromebook) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Chromebook](https://www.precursorintelligence.com/product/mercer/chromebook) by [Mercer](https://www.precursorintelligence.com/vendors/mercer) (Hardware): version not specified
- [Chromebook](https://www.precursorintelligence.com/product/nexian/chromebook) by [Nexian](https://www.precursorintelligence.com/vendors/nexian) (Hardware): version not specified
- [Chromebook](https://www.precursorintelligence.com/product/toshiba/chromebook) by [Toshiba](https://www.precursorintelligence.com/vendors/toshiba) (Hardware): version not specified
- [Chromebook](https://www.precursorintelligence.com/product/videonet/chromebook) by [Videonet](https://www.precursorintelligence.com/vendors/videonet) (Hardware): version not specified
- [Chromebook](https://www.precursorintelligence.com/product/xolo/chromebook) by [Xolo](https://www.precursorintelligence.com/vendors/xolo) (Hardware): version not specified
- [Chromebook 11](https://www.precursorintelligence.com/product/bobicus/chromebook_11) by [Bobicus](https://www.precursorintelligence.com/vendors/bobicus) (Hardware): all versions
- [Chromebook 11](https://www.precursorintelligence.com/product/dell/chromebook_11) by [Dell](https://www.precursorintelligence.com/vendors/dell) (Hardware): version not specified
- [Chromebook 11](https://www.precursorintelligence.com/product/haier/chromebook_11) by [Haier](https://www.precursorintelligence.com/vendors/haier) (Hardware): version not specified
- [Chromebook 11](https://www.precursorintelligence.com/product/hisense/chromebook_11) by [Hisense](https://www.precursorintelligence.com/vendors/hisense) (Hardware): version not specified
- [Chromebook 11](https://www.precursorintelligence.com/product/poin2/chromebook_11) by [Poin2](https://www.precursorintelligence.com/vendors/poin2) (Hardware): version not specified
- [Chromebook 11](https://www.precursorintelligence.com/product/viglen/chromebook_11) by [Viglen](https://www.precursorintelligence.com/vendors/viglen) (Hardware): version not specified
- [Chromebook 11 1100-1199](https://www.precursorintelligence.com/product/hp/chromebook_11_1100-1199) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Chromebook 11 2000-2099](https://www.precursorintelligence.com/product/hp/chromebook_11_2000-2099) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Chromebook 11 2100-2199](https://www.precursorintelligence.com/product/hp/chromebook_11_2100-2199) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Chromebook 11 2200-2299](https://www.precursorintelligence.com/product/hp/chromebook_11_2200-2299) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Chromebook 11 3120](https://www.precursorintelligence.com/product/dell/chromebook_11_3120) by [Dell](https://www.precursorintelligence.com/vendors/dell) (Hardware): version not specified
- [Chromebook 11 3189](https://www.precursorintelligence.com/product/dell/chromebook_11_3189) by [Dell](https://www.precursorintelligence.com/vendors/dell) (Hardware): version not specified
- [Chromebook 11 C](https://www.precursorintelligence.com/product/haier/chromebook_11_c) by [Haier](https://www.precursorintelligence.com/vendors/haier) (Hardware): version not specified
- [Chromebook 11 C730](https://www.precursorintelligence.com/product/acer/chromebook_11_c730) by [Acer](https://www.precursorintelligence.com/vendors/acer) (Hardware): version not specified
- [Chromebook 11 C730e](https://www.precursorintelligence.com/product/acer/chromebook_11_c730e) by [Acer](https://www.precursorintelligence.com/vendors/acer) (Hardware): version not specified
- [Chromebook 11 C735](https://www.precursorintelligence.com/product/acer/chromebook_11_c735) by [Acer](https://www.precursorintelligence.com/vendors/acer) (Hardware): version not specified
- [Chromebook 11 C740](https://www.precursorintelligence.com/product/acer/chromebook_11_c740) by [Acer](https://www.precursorintelligence.com/vendors/acer) (Hardware): version not specified
- [Chromebook 11 C771](https://www.precursorintelligence.com/product/acer/chromebook_11_c771) by [Acer](https://www.precursorintelligence.com/vendors/acer) (Hardware): version not specified
- [Chromebook 11 C771t](https://www.precursorintelligence.com/product/acer/chromebook_11_c771t) by [Acer](https://www.precursorintelligence.com/vendors/acer) (Hardware): version not specified
- [Chromebook 11 G1](https://www.precursorintelligence.com/product/hp/chromebook_11_g1) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Chromebook 11 G2](https://www.precursorintelligence.com/product/haier/chromebook_11_g2) by [Haier](https://www.precursorintelligence.com/vendors/haier) (Hardware): version not specified
- [Chromebook 11 G2](https://www.precursorintelligence.com/product/hp/chromebook_11_g2) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Chromebook 11 G3](https://www.precursorintelligence.com/product/hp/chromebook_11_g3) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- Chromebook 11 G4/g4 Ee by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Chromebook 11 G5](https://www.precursorintelligence.com/product/hp/chromebook_11_g5) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Chromebook 11 G5 Ee](https://www.precursorintelligence.com/product/hp/chromebook_11_g5_ee) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Chromebook 11 Model 3180](https://www.precursorintelligence.com/product/dell/chromebook_11_model_3180) by [Dell](https://www.precursorintelligence.com/vendors/dell) (Hardware): version not specified
- [Chromebook 11 N7 C731](https://www.precursorintelligence.com/product/acer/chromebook_11_n7_c731) by [Acer](https://www.precursorintelligence.com/vendors/acer) (Hardware): version not specified
- [Chromebook 11-Vxxx](https://www.precursorintelligence.com/product/hp/chromebook_11-vxxx) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Chromebook 11e](https://www.precursorintelligence.com/product/haier/chromebook_11e) by [Haier](https://www.precursorintelligence.com/vendors/haier) (Hardware): version not specified
- [Chromebook 13 3380](https://www.precursorintelligence.com/product/dell/chromebook_13_3380) by [Dell](https://www.precursorintelligence.com/vendors/dell) (Hardware): version not specified
- [Chromebook 13 Cb5-311](https://www.precursorintelligence.com/product/acer/chromebook_13_cb5-311) by [Acer](https://www.precursorintelligence.com/vendors/acer) (Hardware): version not specified
- [Chromebook 13 G1](https://www.precursorintelligence.com/product/hp/chromebook_13_g1) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Chromebook 14](https://www.precursorintelligence.com/product/hp/chromebook_14) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Chromebook 14](https://www.precursorintelligence.com/product/poin2/chromebook_14) by [Poin2](https://www.precursorintelligence.com/vendors/poin2) (Hardware): version not specified
- [Chromebook 14 Ak000-099](https://www.precursorintelligence.com/product/hp/chromebook_14_ak000-099) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Chromebook 14 Cb3-431](https://www.precursorintelligence.com/product/acer/chromebook_14_cb3-431) by [Acer](https://www.precursorintelligence.com/vendors/acer) (Hardware): version not specified
- [Chromebook 14 for Work Cp5-471](https://www.precursorintelligence.com/product/acer/chromebook_14_for_work_cp5-471) by [Acer](https://www.precursorintelligence.com/vendors/acer) (Hardware): version not specified
- [Chromebook 14 G3](https://www.precursorintelligence.com/product/hp/chromebook_14_g3) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Chromebook 14 G4](https://www.precursorintelligence.com/product/hp/chromebook_14_g4) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Chromebook 14 X000-X999](https://www.precursorintelligence.com/product/hp/chromebook_14_x000-x999) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Chromebook 15 Cb3-531](https://www.precursorintelligence.com/product/acer/chromebook_15_cb3-531) by [Acer](https://www.precursorintelligence.com/vendors/acer) (Hardware): version not specified
- [Chromebook 15 Cb3-532](https://www.precursorintelligence.com/product/acer/chromebook_15_cb3-532) by [Acer](https://www.precursorintelligence.com/vendors/acer) (Hardware): version not specified
- [Chromebook 15 Cb5-571](https://www.precursorintelligence.com/product/acer/chromebook_15_cb5-571) by [Acer](https://www.precursorintelligence.com/vendors/acer) (Hardware): version not specified
- [Chromebook 2](https://www.precursorintelligence.com/product/toshiba/chromebook_2) by [Toshiba](https://www.precursorintelligence.com/vendors/toshiba) (Hardware): version not specified
- [Chromebook 2 11](https://www.precursorintelligence.com/product/samsung/chromebook_2_11) by [Samsung](https://www.precursorintelligence.com/vendors/samsung) (Hardware): version not specified
- [Chromebook 2 11 Xe500c12](https://www.precursorintelligence.com/product/samsung/chromebook_2_11_xe500c12) by [Samsung](https://www.precursorintelligence.com/vendors/samsung) (Hardware): version not specified
- [Chromebook 2 13](https://www.precursorintelligence.com/product/samsung/chromebook_2_13) by [Samsung](https://www.precursorintelligence.com/vendors/samsung) (Hardware): version not specified
- [Chromebook 3](https://www.precursorintelligence.com/product/samsung/chromebook_3) by [Samsung](https://www.precursorintelligence.com/vendors/samsung) (Hardware): version not specified
- [Chromebook 360](https://www.precursorintelligence.com/product/viglen/chromebook_360) by [Viglen](https://www.precursorintelligence.com/vendors/viglen) (Hardware): version not specified
- [Chromebook Bl10](https://www.precursorintelligence.com/product/videonet/chromebook_bl10) by [Videonet](https://www.precursorintelligence.com/vendors/videonet) (Hardware): version not specified
- [Chromebook C200](https://www.precursorintelligence.com/product/asus/chromebook_c200) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified
- [Chromebook C201pa](https://www.precursorintelligence.com/product/asus/chromebook_c201pa) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified
- [Chromebook C202sa](https://www.precursorintelligence.com/product/asus/chromebook_c202sa) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified
- [Chromebook C300](https://www.precursorintelligence.com/product/asus/chromebook_c300) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified
- [Chromebook C300sa](https://www.precursorintelligence.com/product/asus/chromebook_c300sa) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified
- [Chromebook C301sa](https://www.precursorintelligence.com/product/asus/chromebook_c301sa) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified
- [Chromebook Ch1190](https://www.precursorintelligence.com/product/positivo/chromebook_ch1190) by [Positivo](https://www.precursorintelligence.com/vendors/positivo) (Hardware): version not specified
- [Chromebook Cx100](https://www.precursorintelligence.com/product/ncomputing/chromebook_cx100) by [Ncomputing](https://www.precursorintelligence.com/vendors/ncomputing) (Hardware): version not specified
- [Chromebook Elb1101](https://www.precursorintelligence.com/product/epik/chromebook_elb1101) by [Epik](https://www.precursorintelligence.com/vendors/epik) (Hardware): version not specified
- [Chromebook Flip C100pa](https://www.precursorintelligence.com/product/asus/chromebook_flip_c100pa) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified
- [Chromebook Flip C302](https://www.precursorintelligence.com/product/asus/chromebook_flip_c302) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified
- [Chromebook K](https://www.precursorintelligence.com/product/edugear/chromebook_k) by [Edugear](https://www.precursorintelligence.com/vendors/edugear) (Hardware): version not specified
- [Chromebook M](https://www.precursorintelligence.com/product/edugear/chromebook_m) by [Edugear](https://www.precursorintelligence.com/vendors/edugear) (Hardware): version not specified
- [Chromebook Pcm-116t-432b](https://www.precursorintelligence.com/product/pcmerge/chromebook_pcm-116t-432b) by [Pcmerge](https://www.precursorintelligence.com/vendors/pcmerge) (Hardware): version not specified
- [Chromebook Pi](https://www.precursorintelligence.com/product/hexa/chromebook_pi) by [Hexa](https://www.precursorintelligence.com/vendors/hexa) (Hardware): version not specified
- [Chromebook Plus](https://www.precursorintelligence.com/product/samsung/chromebook_plus) by [Samsung](https://www.precursorintelligence.com/vendors/samsung) (Hardware): version not specified
- [Chromebook Pro](https://www.precursorintelligence.com/product/samsung/chromebook_pro) by [Samsung](https://www.precursorintelligence.com/vendors/samsung) (Hardware): version not specified
- [Chromebook R](https://www.precursorintelligence.com/product/edugear/chromebook_r) by [Edugear](https://www.precursorintelligence.com/vendors/edugear) (Hardware): version not specified
- [Chromebook R11](https://www.precursorintelligence.com/product/acer/chromebook_r11) by [Acer](https://www.precursorintelligence.com/vendors/acer) (Hardware): version not specified
- [Chromebook R13 Cb5-312t](https://www.precursorintelligence.com/product/acer/chromebook_r13_cb5-312t) by [Acer](https://www.precursorintelligence.com/vendors/acer) (Hardware): version not specified
- [Chromebook S2015](https://www.precursorintelligence.com/product/medion/chromebook_s2015) by [Medion](https://www.precursorintelligence.com/vendors/medion) (Hardware): version not specified
- [Chromebox](https://www.precursorintelligence.com/product/acer/chromebox) by [Acer](https://www.precursorintelligence.com/vendors/acer) (Hardware): version not specified
- [Chromebox](https://www.precursorintelligence.com/product/aopen/chromebox) by [Aopen](https://www.precursorintelligence.com/vendors/aopen) (Hardware): version not specified
- [Chromebox](https://www.precursorintelligence.com/product/dell/chromebox) by [Dell](https://www.precursorintelligence.com/vendors/dell) (Hardware): version not specified
- Chromebox Cb1-(000-099) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Chromebox Cn60](https://www.precursorintelligence.com/product/asus/chromebox_cn60) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified
- [Chromebox Cn62](https://www.precursorintelligence.com/product/asus/chromebox_cn62) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified
- [Chromebox Cxi2](https://www.precursorintelligence.com/product/acer/chromebox_cxi2) by [Acer](https://www.precursorintelligence.com/vendors/acer) (Hardware): version not specified
- [Chromebox G1](https://www.precursorintelligence.com/product/hp/chromebox_g1) by [HP](https://www.precursorintelligence.com/vendors/hp) (Hardware): version not specified
- [Chromeboxi](https://www.precursorintelligence.com/product/aopen/chromeboxi) by [Aopen](https://www.precursorintelligence.com/vendors/aopen) (Hardware): version not specified
- [Cmt Chromebook](https://www.precursorintelligence.com/product/edugear/cmt_chromebook) by [Edugear](https://www.precursorintelligence.com/vendors/edugear) (Hardware): version not specified
- [E1 Rugged Chromebook](https://www.precursorintelligence.com/product/sector-five/e1_rugged_chromebook) by [Sector-Five](https://www.precursorintelligence.com/vendors/sector-five) (Hardware): version not specified
- [Education Chromebook](https://www.precursorintelligence.com/product/edxis/education_chromebook) by [Edxis](https://www.precursorintelligence.com/vendors/edxis) (Hardware): version not specified
- [Education Chromebook](https://www.precursorintelligence.com/product/rgs/education_chromebook) by [Rgs](https://www.precursorintelligence.com/vendors/rgs) (Hardware): version not specified
- [Entry Line Chromebook](https://www.precursorintelligence.com/product/prowise/entry_line_chromebook) by [Prowise](https://www.precursorintelligence.com/vendors/prowise) (Hardware): version not specified
- [Idc Chromebook](https://www.precursorintelligence.com/product/true/idc_chromebook) by [True](https://www.precursorintelligence.com/vendors/true) (Hardware): version not specified
- [Idc Chromebook 11](https://www.precursorintelligence.com/product/true/idc_chromebook_11) by [True](https://www.precursorintelligence.com/vendors/true) (Hardware): version not specified
- [J2 Chromebook](https://www.precursorintelligence.com/product/ctl/j2_chromebook) by [Ctl](https://www.precursorintelligence.com/vendors/ctl) (Hardware): version not specified
- [J4 Chromebook](https://www.precursorintelligence.com/product/ctl/j4_chromebook) by [Ctl](https://www.precursorintelligence.com/vendors/ctl) (Hardware): version not specified
- [J5 Chromebook](https://www.precursorintelligence.com/product/ctl/j5_chromebook) by [Ctl](https://www.precursorintelligence.com/vendors/ctl) (Hardware): version not specified
- [N20 Chromebook](https://www.precursorintelligence.com/product/lenovo/n20_chromebook) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [N21 Chromebook](https://www.precursorintelligence.com/product/lenovo/n21_chromebook) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [N22 Chromebook](https://www.precursorintelligence.com/product/lenovo/n22_chromebook) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [N23 Chromebook](https://www.precursorintelligence.com/product/lenovo/n23_chromebook) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [N23 Flex 11 Chromebook](https://www.precursorintelligence.com/product/lenovo/n23_flex_11_chromebook) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [N23 Yoga 11 Chromebook](https://www.precursorintelligence.com/product/lenovo/n23_yoga_11_chromebook) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [N42 Chromebook](https://www.precursorintelligence.com/product/lenovo/n42_chromebook) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [N6 Chromebook](https://www.precursorintelligence.com/product/ctl/n6_chromebook) by [Ctl](https://www.precursorintelligence.com/vendors/ctl) (Hardware): version not specified
- [Nl61 Chromebook](https://www.precursorintelligence.com/product/ctl/nl61_chromebook) by [Ctl](https://www.precursorintelligence.com/vendors/ctl) (Hardware): version not specified
- [Pixel](https://www.precursorintelligence.com/product/google/pixel) by [Google](https://www.precursorintelligence.com/vendors/google) (Hardware): version not specified
- [Proline Chromebook](https://www.precursorintelligence.com/product/prowise/proline_chromebook) by [Prowise](https://www.precursorintelligence.com/vendors/prowise) (Hardware): version not specified
- [Rsa Library](https://www.precursorintelligence.com/product/infineon/rsa_library) by [Infineon](https://www.precursorintelligence.com/vendors/infineon) (Application): up to 1.02.013
- [Thinkcentre Chromebox](https://www.precursorintelligence.com/product/lenovo/thinkcentre_chromebox) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Thinkpad 11e Chromebook](https://www.precursorintelligence.com/product/lenovo/thinkpad_11e_chromebook) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Thinkpad 13 Chromebook](https://www.precursorintelligence.com/product/lenovo/thinkpad_13_chromebook) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [V2 Chromebook](https://www.precursorintelligence.com/product/mercer/v2_chromebook) by [Mercer](https://www.precursorintelligence.com/vendors/mercer) (Hardware): version not specified

## How do I fix CVE-2017-15361?

1. **Check whether you run it.** Compare your versions with the affected products above. Not sure what you run? Precursor Intelligence can work it out from your public website, or you can pick it from a list.
2. **Apply the vendor’s fix.** Install the update named in the vendor’s advisory. We’ve put the advisories and patch notes first in the list.
3. **If you can’t patch today.** Follow any mitigation the vendor publishes, and limit who can reach the affected system from the internet until the update is in.
4. **Keep an eye on it.** Track the product and we tell you as soon as we spot this flaw on the list of exploited flaws, or a jump in its exploit likelihood.

### References

- [portal.msrc.microsoft.com](https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV170012) (Issue tracking, Patch, Third-party advisory)
- [sites.google.com](https://sites.google.com/a/chromium.org/dev/chromium-os/tpm_firmware_update) (Issue tracking, Mitigation, Patch, Third-party advisory)
- [infineon.com](https://www.infineon.com/cms/en/product/promopages/tpm-update/?redirId=59160) (Mitigation, Vendor advisory)
- [support.lenovo.com](http://support.lenovo.com/us/en/product_security/LEN-15552) (Mitigation, Third-party advisory)
- [crocs.fi.muni.cz](https://crocs.fi.muni.cz/public/papers/rsa_ccs17) (Issue tracking, Mitigation, Third-party advisory)
- [github.com](https://github.com/crocs-muni/roca) (Mitigation, Third-party advisory)
- [github.com](https://github.com/iadgov/Detect-CVE-2017-15361-TPM) (Mitigation, Third-party advisory)
- [keychest.net](https://keychest.net/roca) (Issue tracking, Mitigation, Third-party advisory)
- [monitor.certipath.com](https://monitor.certipath.com/rsatest) (Mitigation, Third-party advisory)
- [kb.cert.org](https://www.kb.cert.org/vuls/id/307015) (Issue tracking, Mitigation, Third-party advisory, Government resource)
- [yubico.com](https://www.yubico.com/support/security-advisories/ysa-2017-01/) (Mitigation, Third-party advisory)
- [securityfocus.com](http://www.securityfocus.com/bid/101484) (Third-party advisory, Vulnerability database)
- [arstechnica.com](https://arstechnica.com/information-technology/2017/10/crypto-failure-cripples-millions-of-high-security-keys-750k-estonian-ids/) (Issue tracking, Third-party advisory)
- [blog.cr.yp.to](https://blog.cr.yp.to/20171105-infineon.html)
- [cert-portal.siemens.com](https://cert-portal.siemens.com/productcert/pdf/ssa-470231.pdf)
- [dan.enigmabridge.com](https://dan.enigmabridge.com/roca-vulnerability-impact-on-gemalto-idprime-net-smart-cards/) (Issue tracking, Third-party advisory)
- [ics-cert.us-cert.gov](https://ics-cert.us-cert.gov/advisories/ICSA-18-058-01)
- [security.netapp.com](https://security.netapp.com/advisory/ntap-20171024-0001/)
- [support.hpe.com](https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03789en_us)
- [support.hpe.com](https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03801en_us)
- [intel.com](https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00104.html)
- [intel.com](https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00148.html)

## Questions

### What is CVE-2017-15361?

CVE-2017-15361 is a medium-severity flaw in Trusted Platform Firmware from Infineon, published on 16 October 2017. It can be attacked from anywhere on the internet without logging in, and nobody has to click anything. If it works, the attacker can read data.

### How serious is CVE-2017-15361?

It scores 5.9 out of 10 on the CVSS severity scale, which is medium. Our risk score for CVE-2017-15361 is 42 out of 100, which is Medium. Its action is "Plan remediation". No sign of exploitation and a low forecast. Patch it in your normal update cycle.

### Is CVE-2017-15361 being exploited?

It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 9.8%. That can change at any time, which is why we keep watching.

### Which versions does CVE-2017-15361 affect?

For Trusted Platform Firmware from Infineon: 4.31, 4.32, 6.40, 133.32. The record lists 126 products in all, each with its versions, under "Who is affected" on this page.

### How do I fix CVE-2017-15361?

Install the update the vendor names in its advisory, linked first under "How do I fix" on this page. If you can't patch today, follow the vendor's mitigation and limit who can reach the affected system from the internet.

## Does CVE-2017-15361 affect you?

Precursor Intelligence keeps checking for you:

- **Tell us what you run.** Pick your software from a list, or let us work it out from your website.
- **We match it to every flaw.** Over 400,000 published flaws, checked against your list.
- **Ranked by real-world risk.** Every flaw gets a 0 to 100 risk score, kept up to date, led by evidence criminals are using it.
- **Told as soon as we know.** An alert by email, in the app or by webhook to your own tools.

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