Use of a Broken or Risky Cryptographic Algorithm

Affecting gnutls28 package, versions <3.6.7-4+deb10u3

Report new vulnerabilities
Do your applications use this vulnerable package? Test your applications

Overview

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.

References

CVSS Score

7.4
high severity
  • Attack Vector
    Network
  • Attack Complexity
    High
  • Privileges Required
    None
  • User Interaction
    None
  • Scope
    Unchanged
  • Confidentiality
    High
  • Integrity
    High
  • Availability
    None
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CVE
CVE-2020-11501
CWE
CWE-327
Snyk ID
SNYK-DEBIAN10-GNUTLS28-564383
Disclosed
03 Apr, 2020
Published
03 Apr, 2020