DescriptionGNU Libtasn1-4.13 libtasn1-4.13 version libtasn1-4.13, libtasn1-4.12 contains a DoS, specifically CPU usage will reach 100% when running asn1Paser against the POC due to an issue in _asn1_expand_object_id(p_tree), after a long time, the program will be killed. This attack appears to be exploitable via parsing a crafted file.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severityhigh (attack range: remote)
Debian Bugs906768

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libtasn1-6 (PTS)jessie (security), jessie4.2-3+deb8u3vulnerable
stretch (security), stretch4.10-1.1+deb9u1vulnerable
buster, sid4.13-3vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


[stretch] - libtasn1-6 <no-dsa> (Minor issue)
[jessie] - libtasn1-6 <no-dsa> (Minor issue since this cannot be exploited at runtime)

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