CVE-2014-4344

NameCVE-2014-4344
DescriptionThe acc_ctx_cont function in the SPNEGO acceptor in lib/gssapi/spnego/spnego_mech.c in MIT Kerberos 5 (aka krb5) 1.5.x through 1.12.x before 1.12.2 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via an empty continuation token at a certain point during a SPNEGO negotiation.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-37-1, DSA-3000-1
NVD severityhigh (attack range: remote)
Debian Bugs755521

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
krb5 (PTS)wheezy (security), wheezy1.10.1+dfsg-5+deb7u7fixed
jessie (security), jessie1.12.1+dfsg-19+deb8u2fixed
stretch, sid1.14.3+dfsg-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
krb5source(unstable)1.12.1+dfsg-5high755521
krb5sourcesqueeze1.8.3+dfsg-4squeeze8high
krb5sourcewheezy1.10.1+dfsg-5+deb7u2highDSA-3000-1

Notes

https://github.com/krb5/krb5/commit/524688ce87a15fc75f87efc8c039ba4c7d5c197b

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