CVE-2016-4008

NameCVE-2016-4008
DescriptionThe _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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-495-1, DSA-3568-1
NVD severitymedium (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libtasn1-3 (PTS)wheezy2.13-2+deb7u2vulnerable
wheezy (security)2.13-2+deb7u5fixed
libtasn1-6 (PTS)jessie, jessie (security)4.2-3+deb8u3fixed
stretch4.10-1.1fixed
buster, sid4.12-3fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libtasn1-3source(unstable)(unfixed)medium
libtasn1-3sourcewheezy2.13-2+deb7u3mediumDLA-495-1
libtasn1-6source(unstable)4.8-1medium
libtasn1-6sourcejessie4.2-3+deb8u2mediumDSA-3568-1

Notes

http://www.openwall.com/lists/oss-security/2016/04/11/3
http://git.savannah.gnu.org/cgit/libtasn1.git/commit/?id=f435825c0f527a8e52e6ffbc3ad0bc60531d537e
http://git.savannah.gnu.org/cgit/libtasn1.git/commit/?id=a6e0a0b58f5cdaf4e9beca5bce69c09808cbb625

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