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CVE-2020-24659

Published: 4 September 2020

An issue was discovered in GnuTLS before 3.6.15. A server can trigger a NULL pointer dereference in a TLS 1.3 client if a no_renegotiation alert is sent with unexpected timing, and then an invalid second handshake occurs. The crash happens in the application's error handling path, where the gnutls_deinit function is called after detecting a handshake failure.

Priority

Medium

CVSS 3 base score: 7.5

Status

Package Release Status
gnutls28
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(code not present)
focal
Released (3.6.13-2ubuntu1.3)
precise Does not exist

trusty Does not exist

upstream
Released (3.6.15-1)
xenial Not vulnerable
(code not present)