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CVE-2020-1968

3.7 · LOW

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 ciph…

Published Sep 9, 2020CWE-203EPSS 4.90%

Overview

CVE-2020-1968 is a low-severity vulnerability. It was published on September 9, 2020 and has a CVSS 3.1 base score of 3.7 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.7, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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).

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Reflists.debian.org/debian-lts-announce/2020/09/msg00016.htmlRefsecurity.gentoo.org/glsa/202210-02Refsecurity.netapp.com/advisory/ntap-20200911-0004/Refusn.ubuntu.com/4504-1/Refwww.openssl.org/news/secadv/20200909.txtRefwww.oracle.com//security-alerts/cpujul2021.htmlRefwww.oracle.com/security-alerts/cpuApr2021.htmlRefwww.oracle.com/security-alerts/cpuapr2022.htmlRefwww.oracle.com/security-alerts/cpujan2021.htmlRefwww.oracle.com/security-alerts/cpuoct2021.html

How CyberStrike helps

Frequently asked questions

What is CVE-2020-1968?

CVE-2020-1968 is a low-severity vulnerability. It was published on September 9, 2020 and has a CVSS 3.1 base score of 3.7 (LOW).

How severe is CVE-2020-1968?

This vulnerability has a CVSS 3.1 base score of 3.7, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2020-1968?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2020-1968?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2020-1968 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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