GnuTLS 3.6.x before 3.6.13 uses incorrect cryptography for DTLS. The earliest affected version is 3.6.3 (2018-07-16) because of an error in a 2017-10-06 commit. The DTLS client always uses 32 ‘ ‘ bytes instead of a random value, and thus contributes no randomness to a DTLS negotiation. This breaks the security guarantees of the DTLS protocol.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11501
Reference (s):
- https://security.netapp.com/advisory/ntap-20200416-0002/
- DEBIAN:DSA-4652
- URL: https://www.debian.org/security/2020/dsa-4652
- FEDORA:FEDORA-2020-d14280a6e8
- URL: https://lists.fedoraproject.org/archives/list/[email protected]/message/ILMOWPKMTZAIMK5F32TUMO34XCABUCFJ/