Use of a Broken or Risky Cryptographic Algorithm Affecting gnutls28 package, versions <3.6.7-4+deb10u3


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.49% (77th percentile)

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  • Snyk IDSNYK-DEBIAN10-GNUTLS28-564383
  • published3 Apr 2020
  • disclosed3 Apr 2020

Introduced: 3 Apr 2020

CVE-2020-11501  (opens in a new tab)
CWE-327  (opens in a new tab)

How to fix?

Upgrade Debian:10 gnutls28 to version 3.6.7-4+deb10u3 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.

GnuTLS 3.6.x before 3.6.13 uses incorrect cryptography for DTLS. The earliest affected version is 3.6.3 (2018-07-16) because of an error in a 2017-10-06 commit. The DTLS client always uses 32 '\0' bytes instead of a random value, and thus contributes no randomness to a DTLS negotiation. This breaks the security guarantees of the DTLS protocol.

CVSS Scores

version 3.1