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Red Hat: CVE-2020-24659: CVE-2020-24659 gnutls: Heap buffer overflow in handshake with no_renegotiation alert sent (Multiple Advisories)

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Red Hat: CVE-2020-24659: CVE-2020-24659 gnutls: Heap buffer overflow in handshake with no_renegotiation alert sent (Multiple Advisories)

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
09/04/2020
Created
12/22/2020
Added
12/21/2020
Modified
12/15/2023

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)

  • redhat-upgrade-gnutls
  • redhat-upgrade-gnutls-c
  • redhat-upgrade-gnutls-c-debuginfo
  • redhat-upgrade-gnutls-dane
  • redhat-upgrade-gnutls-dane-debuginfo
  • redhat-upgrade-gnutls-debuginfo
  • redhat-upgrade-gnutls-debugsource
  • redhat-upgrade-gnutls-devel
  • redhat-upgrade-gnutls-utils
  • redhat-upgrade-gnutls-utils-debuginfo

References

  • CVE-2020-24659
  • RHSA-2020:5483

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