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Debian Security Advisory DSA-3395-1 security@debian.org
https://www.debian.org/security/ Salvatore Bonaccorso
November 06, 2015 https://www.debian.org/security/faq
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Package : krb5
CVE ID : CVE-2015-2695 CVE-2015-2696 CVE-2015-2697
Debian Bug : 803083 803084 803088

Several vulnerabilities were discovered in krb5, the MIT implementation
of Kerberos. The Common Vulnerabilities and Exposures project identifies
the following problems:

CVE-2015-2695

It was discovered that applications which call gss_inquire_context()
on a partially-established SPNEGO context can cause the GSS-API
library to read from a pointer using the wrong type, leading to a
process crash.

CVE-2015-2696

It was discovered that applications which call gss_inquire_context()
on a partially-established IAKERB context can cause the GSS-API
library to read from a pointer using the wrong type, leading to a
process crash.

CVE-2015-2697

It was discovered that the build_principal_va() function incorrectly
handles input strings. An authenticated attacker can take advantage
of this flaw to cause a KDC to crash using a TGS request with a
large realm field beginning with a null byte.

For the oldstable distribution (wheezy), these problems have been fixed
in version 1.10.1+dfsg-5+deb7u4.

For the stable distribution (jessie), these problems have been fixed in
version 1.12.1+dfsg-19+deb8u1.

For the testing distribution (stretch), these problems have been fixed
in version 1.13.2+dfsg-3.

For the unstable distribution (sid), these problems have been fixed in
version 1.13.2+dfsg-3.

We recommend that you upgrade your krb5 packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/