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CVE-2019-3836

Status Candidate

Overview

It was discovered in gnutls before version 3.6.7 upstream that there is an uninitialized pointer access in gnutls versions 3.6.3 or later which can be triggered by certain post-handshake messages.

Related Files

Ubuntu Security Notice USN-3999-1
Posted May 30, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3999-1 - Eyal Ronen, Kenneth G. Paterson, and Adi Shamir discovered that GnuTLS was vulnerable to a timing side-channel attack known as the "Lucky Thirteen" issue. A remote attacker could possibly use this issue to perform plaintext-recovery attacks via analysis of timing data. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. Tavis Ormandy discovered that GnuTLS incorrectly handled memory when verifying certain X.509 certificates. A remote attacker could use this issue to cause GnuTLS to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 18.04 LTS, Ubuntu 18.10, and Ubuntu 19.04. Various other issues were also addressed.

tags | advisory, remote, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2018-10844, CVE-2018-10845, CVE-2018-10846, CVE-2019-3829, CVE-2019-3836
MD5 | 4cbf065b1af56a0a40bec4bc087f50f1
Gentoo Linux Security Advisory 201904-14
Posted Apr 15, 2019
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201904-14 - Multiple vulnerabilities have been found in GnuTLS, the worst of which could result in a Denial of Service condition. Versions less than 3.6.7 are affected.

tags | advisory, denial of service, vulnerability
systems | linux, gentoo
advisories | CVE-2019-3829, CVE-2019-3836
MD5 | f953632067b1668efe80bdea57cf6725
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