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CVE-2020-13777

Status Candidate

Overview

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.

Related Files

Red Hat Security Advisory 2020-3525-01
Posted Aug 20, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-3525-01 - Quay 3.3.1 release has been released. An issue where build triggers can disclose robot account names and existence of private repos within namespaces has been addressed.

tags | advisory
systems | linux, redhat
advisories | CVE-2020-11080, CVE-2020-12049, CVE-2020-13777, CVE-2020-14313
SHA-256 | 3f0048d4bdec59a51f24f090fac9217f3567fd502a0907966e5df07b310946ee
Red Hat Security Advisory 2020-2637-01
Posted Jun 22, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2637-01 - The gnutls packages provide the GNU Transport Layer Security library, which implements cryptographic algorithms and protocols such as SSL, TLS, and DTLS. Issues addressed include a man-in-the-middle vulnerability.

tags | advisory, protocol
systems | linux, redhat
advisories | CVE-2020-13777
SHA-256 | 75e20d2ad7787693194645be75739ed1dbd377aebd8eafabfc4c215110018701
Red Hat Security Advisory 2020-2638-01
Posted Jun 22, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2638-01 - The gnutls packages provide the GNU Transport Layer Security library, which implements cryptographic algorithms and protocols such as SSL, TLS, and DTLS. Issues addressed include a man-in-the-middle vulnerability.

tags | advisory, protocol
systems | linux, redhat
advisories | CVE-2020-13777
SHA-256 | c23fb9ec6d6c8f98388464967da270f6e08492eaf03d2f00d45bfbb844a79d5c
Red Hat Security Advisory 2020-2639-01
Posted Jun 22, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2639-01 - The gnutls packages provide the GNU Transport Layer Security library, which implements cryptographic algorithms and protocols such as SSL, TLS, and DTLS. Issues addressed include a man-in-the-middle vulnerability.

tags | advisory, protocol
systems | linux, redhat
advisories | CVE-2020-13777
SHA-256 | 659bc136b339fefd06456f7340bedbfb5561c8e45e51bc36c5c892767f1aa198
Gentoo Linux Security Advisory 202006-01
Posted Jun 9, 2020
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202006-1 - An information disclosure vulnerability in GnuTLS allow remote attackers to obtain sensitive information. Versions less than 3.6.14 are affected.

tags | advisory, remote, info disclosure
systems | linux, gentoo
advisories | CVE-2020-13777
SHA-256 | 323e146f2376f2d129a54e1b0cca63f0ea73eac997d0155096a35e454fe04324
Ubuntu Security Notice USN-4384-1
Posted Jun 5, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4384-1 - It was discovered that GnuTLS incorrectly handled session ticket encryption keys. A remote attacker could possibly use this issue to bypass authentication or recover sensitive information.

tags | advisory, remote
systems | linux, ubuntu
advisories | CVE-2020-13777
SHA-256 | 492abbc577184d8e91af368a59566ed8ddd0e0406382a8c4734a76657eeb48e5
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