Gentoo: GLSA-201703-05: GNU Libtasn1: Denial of Service
Summary
Libtasn1 does not correctly handle certain malformed DER certificates.
Resolution
All Libtasn1 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/libtasn1-4.8"
References
[ 1 ] CVE-2016-4008 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-4008
Availability
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/201703-05
Concerns
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
![Dist Gentoo](/images/distros/dist-gentoo.png)
Synopsis
A vulnerability in Libtasn1 allows remote attackers to cause a Denial of Service condition.
Background
A library that provides Abstract Syntax Notation One (ASN.1, as specified by the X.680 ITU-T recommendation) parsing and structures management, and Distinguished Encoding Rules (DER, as per X.690) encoding and decoding functions.
Affected Packages
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-libs/libtasn1 < 4.8 >= 4.8
Impact
===== A remote attacker could entice a user or automated system to process a specially crafted certificate using Libtasn1, resulting in a Denial of Service condition.
Workaround
There is no known workaround at this time.