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FreeBSD: VID-2272E6F1-F029-11EA-838A-0011D823EEBD (CVE-2020-24659): GnuTLS -- null pointer dereference

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FreeBSD: VID-2272E6F1-F029-11EA-838A-0011D823EEBD (CVE-2020-24659): GnuTLS -- null pointer dereference

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
09/04/2020
Created
09/09/2020
Added
09/07/2020
Modified
10/20/2020

Description

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.

Solution(s)

  • freebsd-upgrade-package-gnutls

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