Source: gnutls28 Version: 3.6.13-4 Severity: grave Tags: security upstream Forwarded: https://gitlab.com/gnutls/gnutls/-/issues/1011 Control: found -1 3.6.4-1 Control: found -1 3.6.7-4+deb10u3
Hi Andreas, The following vulnerability was published for gnutsl28, filling it as RC given the resulting in authentication bypass possibility, but if you do not agree please downgrade. CVE-2020-13777[0]: | GnuTLS 3.6.x before 3.6.14 uses incorrect cryptography for encrypting | a session ticket (a loss of confidentiality in TLS 1.2, and an | authentication bypass in TLS 1.3). The earliest affected version is | 3.6.4 (2018-09-24) because of an error in a 2018-09-18 commit. Until | the first key rotation, the TLS server always uses wrong data in place | of an encryption key derived from an application. If you want I can try to help preparing as well a corresponding buster-security update. The issue was introduced in 3.6.4 upstream, so stretch is not affected. If you fix the vulnerability please also make sure to include the CVE (Common Vulnerabilities & Exposures) id in your changelog entry. For further information see: [0] https://security-tracker.debian.org/tracker/CVE-2020-13777 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13777 [1] https://gnutls.org/security-new.html#GNUTLS-SA-2020-06-03 [2] https://gitlab.com/gnutls/gnutls/-/issues/1011 Regards, Salvatore
