cve/2020/CVE-2020-11501.md

CVE-2020-11501

Description

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 '\0' bytes instead of a random value, and thus contributes no randomness to a DTLS negotiation. This breaks the security guarantees of the DTLS protocol.

POC

Reference

• https://usn.ubuntu.com/4322-1/
• https://usn.ubuntu.com/4322-1/

Github

• https://github.com/garethr/snykout