CVE-2016-4008

MEDIUM

GNU Libtasn1 <4.8 - DoS

Title source: llm

Description

The _asn1_extract_der_octet function in lib/decoding.c in GNU Libtasn1 before 4.8, when used without the ASN1_DECODE_FLAG_STRICT_DER flag, allows remote attackers to cause a denial of service (infinite recursion) via a crafted certificate.

References (13)

[Various Sources] http://git.savannah.gnu.org/gitweb/?p=libtasn1.git%3Ba=commit%3Bh=a6e0a0b58f5cdaf4e9beca5bce69c09808cbb625

[Various Sources] http://git.savannah.gnu.org/gitweb/?p=libtasn1.git%3Ba=commit%3Bh=f435825c0f527a8e52e6ffbc3ad0bc60531d537e

[Mailing List] http://lists.opensuse.org/opensuse-updates/2016-06/msg00047.html

[Mailing List] http://lists.opensuse.org/opensuse-updates/2016-06/msg00097.html

[Vendor Advisory] http://www.ubuntu.com/usn/USN-2957-1

[Vendor Advisory] http://www.ubuntu.com/usn/USN-2957-2

[Various Sources] https://lists.gnu.org/archive/html/help-libtasn1/2016-04/msg00009.html

[Mailing List, Third Party Advisory] http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182299.html

[Mailing List, Third Party Advisory] http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182907.html

[Mailing List, Third Party Advisory] http://lists.fedoraproject.org/pipermail/package-announce/2016-April/183221.html

[Third Party Advisory] http://www.debian.org/security/2016/dsa-3568

[Third Party Advisory] https://security.gentoo.org/glsa/201703-05

[Mailing List] http://www.openwall.com/lists/oss-security/2016/04/11/3

Scores

CVSS v3 5.9

EPSS 0.0505

EPSS Percentile 89.6%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Classification

CWE

CWE-399

Status draft

Affected Products (9)

canonical/ubuntu_linux

opensuse/opensuse

gnu/libtasn1 < 4.7

fedoraproject/fedora

Timeline

Published May 05, 2016

Tracked Since Feb 18, 2026