# What is CVE-2020-1968? > CVE-2020-1968 is a low-severity flaw (CVSS 3.7) in OpenSSL, published on 9 September 2020. 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 4.9%. If you run an affected version, plan in the vendor’s fix. Canonical page: https://www.precursorintelligence.com/what-is/cve-2020-1968 ## 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:** 22 out of 100 (Low); action: Monitor. Kept up to date as the evidence changes. - **Severity:** Low (CVSS 3.7 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:** 4.9% (latest exploit-likelihood forecast) - **Published:** 9 September 2020 - **Record last updated:** 21 November 2022 - **Main product:** OpenSSL - **Affected products:** 25 ## What is CVE-2020-1968? 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 some data. ### The official description The Raccoon attack exploits a flaw in the TLS specification which can lead to an attacker being able to compute the pre-master secret in connections which have used a Diffie-Hellman (DH) based ciphersuite. In such a case this would result in the attacker being able to eavesdrop on all encrypted communications sent over that TLS connection. The attack can only be exploited if an implementation re-uses a DH secret across multiple TLS connections. Note that this issue only impacts DH ciphersuites and not ECDH ciphersuites. This issue affects OpenSSL 1.0.2 which is out of support and no longer receiving public updates. OpenSSL 1.1.1 is not vulnerable to this issue. Fixed in OpenSSL 1.0.2w (Affected 1.0.2-1.0.2v). ### What kind of flaw is it? - CWE-203: Observable Discrepancy ### 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 some data Severity vector: `CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N` ## Is CVE-2020-1968 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 4.9%. That can change at any time, which is why we keep watching. Exploit likelihood over the last 7 days: 4.9%, 4.9%, 4.9%, 4.9%, 4.9%, 4.9%, 4.9%. ### Timeline - 9 September 2020: Published - 21 November 2022: Record last updated ### How Precursor Intelligence ranks it CVE-2020-1968 scores **22 out of 100 (Low)**, with the action "Monitor". 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-2020-1968? The published record lists 25 products. Versions are as published: "before xcp2400" means every version up to, but not including, xcp2400. - [OpenSSL](https://www.precursorintelligence.com/product/openssl/openssl) by [OpenSSL](https://www.precursorintelligence.com/vendors/openssl) (Application): 1.0.2 to 1.0.2v - [Peoplesoft Enterprise Peopletools](https://www.precursorintelligence.com/product/oracle/peoplesoft_enterprise_peopletools) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 8.56, 8.57, 8.58 - [M10-1 Firmware](https://www.precursorintelligence.com/product/fujitsu/m10-1_firmware) by [Fujitsu](https://www.precursorintelligence.com/vendors/fujitsu) (Operating system): before xcp2400, before xcp3100 - [M10-4 Firmware](https://www.precursorintelligence.com/product/fujitsu/m10-4_firmware) by [Fujitsu](https://www.precursorintelligence.com/vendors/fujitsu) (Operating system): before xcp2400, before xcp3100 - [M10-4s Firmware](https://www.precursorintelligence.com/product/fujitsu/m10-4s_firmware) by [Fujitsu](https://www.precursorintelligence.com/vendors/fujitsu) (Operating system): before xcp2400, before xcp3100 - [M12-1 Firmware](https://www.precursorintelligence.com/product/fujitsu/m12-1_firmware) by [Fujitsu](https://www.precursorintelligence.com/vendors/fujitsu) (Operating system): before xcp2400, before xcp3100 - [M12-2 Firmware](https://www.precursorintelligence.com/product/fujitsu/m12-2_firmware) by [Fujitsu](https://www.precursorintelligence.com/vendors/fujitsu) (Operating system): before xcp2400, before xcp3100 - [M12-2s Firmware](https://www.precursorintelligence.com/product/fujitsu/m12-2s_firmware) by [Fujitsu](https://www.precursorintelligence.com/vendors/fujitsu) (Operating system): before xcp2400, before xcp3100 - [Ubuntu Linux](https://www.precursorintelligence.com/product/canonical/ubuntu_linux) by [Canonical](https://www.precursorintelligence.com/vendors/canonical) (Operating system): 16.04, 18.04 - [Debian Linux](https://www.precursorintelligence.com/product/debian/debian_linux) by [Debian](https://www.precursorintelligence.com/vendors/debian) (Operating system): 9.0 - [Ethernet Switch Es1-24](https://www.precursorintelligence.com/product/oracle/ethernet_switch_es1-24) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Hardware): version not specified - [Ethernet Switch Es1-24 Firmware](https://www.precursorintelligence.com/product/oracle/ethernet_switch_es1-24_firmware) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Operating system): 1.3.1 - [Ethernet Switch Es2-64](https://www.precursorintelligence.com/product/oracle/ethernet_switch_es2-64) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Hardware): version not specified - [Ethernet Switch Es2-64 Firmware](https://www.precursorintelligence.com/product/oracle/ethernet_switch_es2-64_firmware) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Operating system): 2.0.0.14 - [Ethernet Switch Es2-72](https://www.precursorintelligence.com/product/oracle/ethernet_switch_es2-72) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Hardware): version not specified - [Ethernet Switch Es2-72 Firmware](https://www.precursorintelligence.com/product/oracle/ethernet_switch_es2-72_firmware) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Operating system): 2.0.0.14 - [Ethernet Switch Tor-72](https://www.precursorintelligence.com/product/oracle/ethernet_switch_tor-72) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Hardware): version not specified - [Ethernet Switch Tor-72 Firmware](https://www.precursorintelligence.com/product/oracle/ethernet_switch_tor-72_firmware) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Operating system): 1.2.2 - [Jd Edwards World Security](https://www.precursorintelligence.com/product/oracle/jd_edwards_world_security) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): a9.4 - [M10-1](https://www.precursorintelligence.com/product/fujitsu/m10-1) by [Fujitsu](https://www.precursorintelligence.com/vendors/fujitsu) (Hardware): version not specified - [M10-4](https://www.precursorintelligence.com/product/fujitsu/m10-4) by [Fujitsu](https://www.precursorintelligence.com/vendors/fujitsu) (Hardware): version not specified - [M10-4s](https://www.precursorintelligence.com/product/fujitsu/m10-4s) by [Fujitsu](https://www.precursorintelligence.com/vendors/fujitsu) (Hardware): version not specified - [M12-1](https://www.precursorintelligence.com/product/fujitsu/m12-1) by [Fujitsu](https://www.precursorintelligence.com/vendors/fujitsu) (Hardware): version not specified - [M12-2](https://www.precursorintelligence.com/product/fujitsu/m12-2) by [Fujitsu](https://www.precursorintelligence.com/vendors/fujitsu) (Hardware): version not specified - [M12-2s](https://www.precursorintelligence.com/product/fujitsu/m12-2s) by [Fujitsu](https://www.precursorintelligence.com/vendors/fujitsu) (Hardware): version not specified ## How do I fix CVE-2020-1968? 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 - [oracle.com](https://www.oracle.com//security-alerts/cpujul2021.html) (Patch, Third-party advisory) - [oracle.com](https://www.oracle.com/security-alerts/cpuApr2021.html) (Patch, Third-party advisory) - [oracle.com](https://www.oracle.com/security-alerts/cpuapr2022.html) (Patch, Third-party advisory) - [oracle.com](https://www.oracle.com/security-alerts/cpuoct2021.html) (Patch, Third-party advisory) - [openssl.org](https://www.openssl.org/news/secadv/20200909.txt) (Vendor advisory) - [lists.debian.org](https://lists.debian.org/debian-lts-announce/2020/09/msg00016.html) (Mailing list, Third-party advisory) - [security.gentoo.org](https://security.gentoo.org/glsa/202210-02) (Third-party advisory) - [security.netapp.com](https://security.netapp.com/advisory/ntap-20200911-0004/) (Third-party advisory) - [usn.ubuntu.com](https://usn.ubuntu.com/4504-1/) (Third-party advisory) - [oracle.com](https://www.oracle.com/security-alerts/cpujan2021.html) (Third-party advisory) ## Questions ### What is CVE-2020-1968? CVE-2020-1968 is a low-severity flaw in OpenSSL, published on 9 September 2020. 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 some data. ### How serious is CVE-2020-1968? It scores 3.7 out of 10 on the CVSS severity scale, which is low. Our risk score for CVE-2020-1968 is 22 out of 100, which is Low. Its action is "Monitor". No sign of exploitation and a low forecast. Patch it in your normal update cycle. ### Is CVE-2020-1968 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 4.9%. That can change at any time, which is why we keep watching. ### Which versions does CVE-2020-1968 affect? For OpenSSL: 1.0.2 to 1.0.2v. The record lists 25 products in all, each with its versions, under "Who is affected" on this page. ### How do I fix CVE-2020-1968? 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-2020-1968 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. Start free (no card, nothing to install): https://www.precursorintelligence.com/register Book a demo: https://www.precursorintelligence.com/contact