Out-of-bounds Write Affecting gnutls28 package, versions <3.6.7-4+deb10u7


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.42% (76th percentile)

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  • Snyk IDSNYK-DEBIAN10-GNUTLS28-609778
  • published5 Sept 2020
  • disclosed4 Sept 2020

Introduced: 4 Sep 2020

CVE-2020-24659  (opens in a new tab)
CWE-787  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Debian:10 gnutls28 to version 3.6.7-4+deb10u7 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gnutls28 package and not the gnutls28 package as distributed by Debian. See How to fix? for Debian:10 relevant fixed versions and status.

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.

CVSS Scores

version 3.1