CVE-2015-2698

NameCVE-2015-2698
DescriptionThe iakerb_gss_export_sec_context function in lib/gssapi/krb5/iakerb.c in MIT Kerberos 5 (aka krb5) 1.14 pre-release 2015-09-14 improperly accesses a certain pointer, which allows remote authenticated users to cause a denial of service (memory corruption) or possibly have unspecified other impact by interacting with an application that calls the gss_export_sec_context function. NOTE: this vulnerability exists because of an incorrect fix for CVE-2015-2696.
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)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
krb5 (PTS)jessie1.12.1+dfsg-19+deb8u4fixed
jessie (security)1.12.1+dfsg-19+deb8u5fixed
stretch1.15-1+deb9u1fixed
buster1.17-3fixed
bullseye, sid1.17-6fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
krb5source(unstable)1.13.2+dfsg-4high
krb5sourcejessie(not affected)
krb5sourcesqueeze(not affected)
krb5sourcewheezy(not affected)

Notes

[jessie] - krb5 <not-affected> (Only affected when applying original patch for CVE-2015-2696 only)
[wheezy] - krb5 <not-affected> (Only affected when applying original patch for CVE-2015-2696 only)
[squeeze] - krb5 <not-affected> (Vulnerable code not present)
Upstream ticket: http://krbdev.mit.edu/rt/Ticket/Display.html?id=8273
https://github.com/krb5/krb5/commit/3db8dfec1ef50ddd78d6ba9503185995876a39fd

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