CVE-2020-1968

 

Published at: - 09-09-2020 04:15

Last modified: - 21-11-2022 08:48

Total changes: - 15

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).

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

 

Verification logic

 

Reference

• https://www.openssl.org/news/secadv/20200909.txt
• https://security.netapp.com/advisory/ntap-20200911-0004/
• USN-4504-1-Third Party Advisory
• [debian-lts-announce] 20200925 [SECURITY] [DLA 2378-1] openssl1.0 security update-Mailing List, Third Party Advisory
• https://www.oracle.com/security-alerts/cpujan2021.html
• https://www.oracle.com/security-alerts/cpuApr2021.html
• N/A-Patch, Third Party Advisory
• https://www.oracle.com/security-alerts/cpuoct2021.html
• https://www.oracle.com/security-alerts/cpuapr2022.html
• GLSA-202210-02-Third Party Advisory

 

Keywords

NVD

 

CVE-2020-1968

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures