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



    Attack Complexity Low
    Availability High
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Red Hat
7.5 high
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5.9 medium
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7.5 high

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  • Snyk ID SNYK-DEBIAN10-GNUTLS28-609778
  • published 5 Sep 2020
  • disclosed 4 Sep 2020

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 to the upstream gnutls28 package. See How to fix? for Debian:10 relevant versions.

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.