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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
MD5 | 7f18a183551d1429182ce5854f336bdc
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
MD5 | 64702929c236da03f6e59871bd9d2c28
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
MD5 | 3836fee9a2a25a25490720841d73a136
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
MD5 | 2370c7febc228cf42bfce0606e02e829
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
MD5 | 6846b303f654b57b93a753ac75da510f
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
MD5 | 188a62341c3f26b400b7b9d2dfdb8270
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