Covert Timing Channel Affecting openssl package, versions *
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Test your applications- Snyk ID SNYK-RHEL7-OPENSSL-1395536
- published 26 Jul 2021
- disclosed 9 Sep 2020
How to fix?
There is no fixed version for RHEL:7 openssl.
NVD Description
Note: Versions mentioned in the description apply only to the upstream openssl package and not the openssl package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
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).
References
- https://security.netapp.com/advisory/ntap-20200911-0004/
- https://www.openssl.org/news/secadv/20200909.txt
- https://access.redhat.com/security/cve/CVE-2020-1968
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://www.oracle.com/security-alerts/cpujan2021.html
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://lists.debian.org/debian-lts-announce/2020/09/msg00016.html
- https://www.oracle.com//security-alerts/cpujul2021.html
- https://usn.ubuntu.com/4504-1/
- https://security.gentoo.org/glsa/202210-02
- https://www.oracle.com/security-alerts/cpuapr2022.html