# What is CVE-2017-17833?

> CVE-2017-17833 is a critical-severity flaw (CVSS 9.8) in Openslp, published on 23 April 2018. 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 3.8%. If you run an affected version, plan in the vendor’s fix.

Canonical page: https://www.precursorintelligence.com/what-is/cve-2017-17833

## At a glance

- **Verdict:** Fix this soon. Not confirmed as exploited yet, but serious or likely enough that it should not wait for a quiet month.
- **Precursor Intelligence risk score:** 54 out of 100 (Medium); action: Plan remediation. Kept up to date as the evidence changes.
- **Severity:** Critical (CVSS 9.8 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:** 3.8% (latest exploit-likelihood forecast)
- **Published:** 23 April 2018
- **Record last updated:** 15 May 2020
- **Main product:** Openslp
- **Affected products:** 61

## What is CVE-2017-17833? 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, change data and take it offline.

### The official description

OpenSLP releases in the 1.0.2 and 1.1.0 code streams have a heap-related memory corruption issue which may manifest itself as a denial-of-service or a remote code-execution vulnerability.

### What kind of flaw is it?

- CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

### How an attack on it works

- Where an attacker can be: Anywhere on the internet
- How hard it is to pull off: Easy: no special conditions
- Login needed first: No login needed
- Does someone have to click: No, nobody has to do anything
- What an attacker gets: Can read data, change data and take it offline

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

## Is CVE-2017-17833 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 3.8%. That can change at any time, which is why we keep watching.

Exploit likelihood over the last 7 days: 3.8%, 3.8%, 3.8%, 3.8%, 3.8%, 3.8%, 3.8%.

### Timeline

- 23 April 2018: Published
- 15 May 2020: Record last updated

### How Precursor Intelligence ranks it

CVE-2017-17833 scores **54 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: key context
- Real threat activity around it: key context

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-2017-17833?

The published record lists 61 products. Versions are as published: "before 24p-2.15" means every version up to, but not including, 24p-2.15.

- [Openslp](https://www.precursorintelligence.com/product/openslp/openslp) by [Openslp](https://www.precursorintelligence.com/vendors/openslp) (Application): 1.0.2, 1.1.0
- [Enterprise Linux Desktop](https://www.precursorintelligence.com/product/redhat/enterprise_linux_desktop) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Operating system): 6.0, 7.0
- [Enterprise Linux Server](https://www.precursorintelligence.com/product/redhat/enterprise_linux_server) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Operating system): 6.0, 7.0
- [Enterprise Linux Server Eus](https://www.precursorintelligence.com/product/redhat/enterprise_linux_server_eus) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Operating system): 7.5, 7.6
- [Enterprise Linux Workstation](https://www.precursorintelligence.com/product/redhat/enterprise_linux_workstation) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Operating system): 6.0, 7.0
- [Ubuntu Linux](https://www.precursorintelligence.com/product/canonical/ubuntu_linux) by [Canonical](https://www.precursorintelligence.com/vendors/canonical) (Operating system): 14.04, 16.04
- [Bm Nextscale Fan Power Controller](https://www.precursorintelligence.com/product/lenovo/bm_nextscale_fan_power_controller) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Application): before 24p-2.15
- [Cmm](https://www.precursorintelligence.com/product/lenovo/cmm) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Application): before 1.8.0
- [Debian Linux](https://www.precursorintelligence.com/product/debian/debian_linux) by [Debian](https://www.precursorintelligence.com/vendors/debian) (Operating system): 7.0
- [Enterprise Linux Server Aus](https://www.precursorintelligence.com/product/redhat/enterprise_linux_server_aus) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Operating system): 7.6
- [Enterprise Linux Server Tus](https://www.precursorintelligence.com/product/redhat/enterprise_linux_server_tus) by [Red Hat](https://www.precursorintelligence.com/vendors/redhat) (Operating system): 7.6
- [Fan Power Controller](https://www.precursorintelligence.com/product/lenovo/fan_power_controller) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Application): before 30r-1.13
- [Flex System Fc3171 8gb SAN Switch](https://www.precursorintelligence.com/product/lenovo/flex_system_fc3171_8gb_san_switch) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Flex System Fc3171 8gb SAN Switch Firmware](https://www.precursorintelligence.com/product/lenovo/flex_system_fc3171_8gb_san_switch_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before 9.1.13.02.00
- [Imm1](https://www.precursorintelligence.com/product/lenovo/imm1) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Application): before 1.55
- [Imm2](https://www.precursorintelligence.com/product/lenovo/imm2) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Application): before 4.70
- [Storage N3310](https://www.precursorintelligence.com/product/lenovo/storage_n3310) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Storage N3310 Firmware](https://www.precursorintelligence.com/product/lenovo/storage_n3310_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before 4.53.351
- [Storage N4610](https://www.precursorintelligence.com/product/lenovo/storage_n4610) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Storage N4610 Firmware](https://www.precursorintelligence.com/product/lenovo/storage_n4610_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before 4.53.351
- [Thinkserver Rd340](https://www.precursorintelligence.com/product/lenovo/thinkserver_rd340) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Thinkserver Rd340 Firmware](https://www.precursorintelligence.com/product/lenovo/thinkserver_rd340_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before 50.00
- [Thinkserver Rd350](https://www.precursorintelligence.com/product/lenovo/thinkserver_rd350) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Thinkserver Rd350 Firmware](https://www.precursorintelligence.com/product/lenovo/thinkserver_rd350_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before 4.53.351
- [Thinkserver Rd350g](https://www.precursorintelligence.com/product/lenovo/thinkserver_rd350g) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Thinkserver Rd350g Firmware](https://www.precursorintelligence.com/product/lenovo/thinkserver_rd350g_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Thinkserver Rd350x](https://www.precursorintelligence.com/product/lenovo/thinkserver_rd350x) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Thinkserver Rd350x Firmware](https://www.precursorintelligence.com/product/lenovo/thinkserver_rd350x_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Thinkserver Rd440](https://www.precursorintelligence.com/product/lenovo/thinkserver_rd440) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Thinkserver Rd440 Firmware](https://www.precursorintelligence.com/product/lenovo/thinkserver_rd440_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): up to 50.00
- [Thinkserver Rd450](https://www.precursorintelligence.com/product/lenovo/thinkserver_rd450) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Thinkserver Rd450 Firmware](https://www.precursorintelligence.com/product/lenovo/thinkserver_rd450_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before 4.53.351
- [Thinkserver Rd450x](https://www.precursorintelligence.com/product/lenovo/thinkserver_rd450x) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Thinkserver Rd450x Firmware](https://www.precursorintelligence.com/product/lenovo/thinkserver_rd450x_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Thinkserver Rd540](https://www.precursorintelligence.com/product/lenovo/thinkserver_rd540) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Thinkserver Rd540 Firmware](https://www.precursorintelligence.com/product/lenovo/thinkserver_rd540_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before 50.00
- [Thinkserver Rd550](https://www.precursorintelligence.com/product/lenovo/thinkserver_rd550) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Thinkserver Rd550 Firmware](https://www.precursorintelligence.com/product/lenovo/thinkserver_rd550_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before 4.53.351
- [Thinkserver Rd640](https://www.precursorintelligence.com/product/lenovo/thinkserver_rd640) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Thinkserver Rd640 Firmware](https://www.precursorintelligence.com/product/lenovo/thinkserver_rd640_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before 50.00
- [Thinkserver Rd650](https://www.precursorintelligence.com/product/lenovo/thinkserver_rd650) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Thinkserver Rd650 Firmware](https://www.precursorintelligence.com/product/lenovo/thinkserver_rd650_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before 4.53.351
- [Thinkserver Rq750](https://www.precursorintelligence.com/product/lenovo/thinkserver_rq750) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Thinkserver Rq750 Firmware](https://www.precursorintelligence.com/product/lenovo/thinkserver_rq750_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before 1.40
- [Thinkserver Rs160](https://www.precursorintelligence.com/product/lenovo/thinkserver_rs160) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Thinkserver Rs160 Firmware](https://www.precursorintelligence.com/product/lenovo/thinkserver_rs160_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before 2.32
- [Thinkserver Sd350](https://www.precursorintelligence.com/product/lenovo/thinkserver_sd350) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Thinkserver Sd350 Firmware](https://www.precursorintelligence.com/product/lenovo/thinkserver_sd350_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Thinkserver Td340](https://www.precursorintelligence.com/product/lenovo/thinkserver_td340) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Thinkserver Td340 Firmware](https://www.precursorintelligence.com/product/lenovo/thinkserver_td340_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before 46.00
- [Thinkserver Td350](https://www.precursorintelligence.com/product/lenovo/thinkserver_td350) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Thinkserver Td350 Firmware](https://www.precursorintelligence.com/product/lenovo/thinkserver_td350_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before 4.53.351
- [Thinkserver Ts460](https://www.precursorintelligence.com/product/lenovo/thinkserver_ts460) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Thinkserver Ts460 Firmware](https://www.precursorintelligence.com/product/lenovo/thinkserver_ts460_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before 2.32
- [Thinksystem Hr630x](https://www.precursorintelligence.com/product/lenovo/thinksystem_hr630x) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Thinksystem Hr630x Firmware](https://www.precursorintelligence.com/product/lenovo/thinksystem_hr630x_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Thinksystem Hr650x](https://www.precursorintelligence.com/product/lenovo/thinksystem_hr650x) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Thinksystem Hr650x Firmware](https://www.precursorintelligence.com/product/lenovo/thinksystem_hr650x_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Thinksystem Sr630](https://www.precursorintelligence.com/product/lenovo/thinksystem_sr630) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified
- [Thinksystem Sr630 Firmware](https://www.precursorintelligence.com/product/lenovo/thinksystem_sr630_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): version not specified
- [Xclarity Administrator](https://www.precursorintelligence.com/product/lenovo/xclarity_administrator) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Application): before 1.4.0

## How do I fix CVE-2017-17833?

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

- [support.lenovo.com](http://support.lenovo.com/us/en/solutions/LEN-18247) (Patch, Third-party advisory)
- [sourceforge.net](https://sourceforge.net/p/openslp/mercurial/ci/151f07745901cbdba6e00e4889561b4083250da1/) (Patch, Third-party advisory)
- [access.redhat.com](https://access.redhat.com/errata/RHSA-2018:2240) (Third-party advisory)
- [access.redhat.com](https://access.redhat.com/errata/RHSA-2018:2308) (Third-party advisory)
- [lists.debian.org](https://lists.debian.org/debian-lts-announce/2018/04/msg00029.html) (Issue tracking, Mailing list, Third-party advisory)
- [security.gentoo.org](https://security.gentoo.org/glsa/202005-12)
- [usn.ubuntu.com](https://usn.ubuntu.com/3708-1/) (Third-party advisory)

## Questions

### What is CVE-2017-17833?

CVE-2017-17833 is a critical-severity flaw in Openslp, published on 23 April 2018. 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, change data and take it offline.

### How serious is CVE-2017-17833?

It scores 9.8 out of 10 on the CVSS severity scale, which is critical. Our risk score for CVE-2017-17833 is 54 out of 100, which is Medium. Its action is "Plan remediation". Not confirmed as exploited yet, but serious or likely enough that it should not wait for a quiet month.

### Is CVE-2017-17833 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 3.8%. That can change at any time, which is why we keep watching.

### Which versions does CVE-2017-17833 affect?

For Openslp: 1.0.2, 1.1.0. The record lists 61 products in all, each with its versions, under "Who is affected" on this page.

### How do I fix CVE-2017-17833?

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-2017-17833 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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