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CVE-2017-6891

Status Candidate

Overview

Two errors in the "asn1_find_node()" function (lib/parser_aux.c) within GnuTLS libtasn1 version 4.10 can be exploited to cause a stacked-based buffer overflow by tricking a user into processing a specially crafted assignments file via the e.g. asn1Coding utility.

Related Files

Gentoo Linux Security Advisory 201710-11
Posted Oct 13, 2017
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201710-11 - Multiple vulnerabilities have been found in GNU Libtasn1, the worst of which may allow remote attackers to execute arbitrary code. Versions less than 4.12-r1 are affected.

tags | advisory, remote, arbitrary, vulnerability
systems | linux, gentoo
advisories | CVE-2017-10790, CVE-2017-6891
MD5 | fc81a9e6076f555809fe9461323ebf2f
Ubuntu Security Notice USN-3309-1
Posted Jun 5, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3309-1 - Jakub Jirasek discovered that GnuTLS incorrectly handled certain assignments files. If a user were tricked into processing a specially crafted assignments file, a remote attacker could possibly execute arbitrary code.

tags | advisory, remote, arbitrary
systems | linux, ubuntu
advisories | CVE-2017-6891
MD5 | 949e7196ad87a00fcaf7ce74a57a51f8
Debian Security Advisory 3861-1
Posted May 26, 2017
Authored by Debian | Site debian.org

Debian Linux Security Advisory 3861-1 - Jakub Jirasek of Secunia Research discovered that libtasn1, a library used to handle Abstract Syntax Notation One structures, did not properly validate its input. This would allow an attacker to cause a crash by denial-of-service, or potentially execute arbitrary code, by tricking a user into processing a maliciously crafted assignments file.

tags | advisory, arbitrary
systems | linux, debian
advisories | CVE-2017-6891
MD5 | 788c0ad49d20fd8197c64ffb108a18ec
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