[SECURITY] [DSA 3466-1] krb5 security update

Debian Security Advisory DSA-3466-1 [email protected]
https://www.debian.org/security/ Salvatore Bonaccorso
February 04, 2016 https://www.debian.org/security/faq

Package : krb5
CVE ID : CVE-2015-8629 CVE-2015-8630 CVE-2015-8631
Debian Bug : 813126 813127 813296

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

CVE-2015-8629

It was discovered that an authenticated attacker can cause kadmind
to read beyond the end of allocated memory by sending a string
without a terminating zero byte. Information leakage may be possible
for an attacker with permission to modify the database.

CVE-2015-8630

It was discovered that an authenticated attacker with permission to
modify a principal entry can cause kadmind to dereference a null
pointer by supplying a null policy value but including KADM5_POLICY
in the mask.

CVE-2015-8631

It was discovered that an authenticated attacker can cause kadmind
to leak memory by supplying a null principal name in a request which
uses one. Repeating these requests will eventually cause kadmind to
exhaust all available memory.

For the oldstable distribution (wheezy), these problems have been fixed
in version 1.10.1+dfsg-5+deb7u7. The oldstable distribution (wheezy) is
not affected by CVE-2015-8630.

For the stable distribution (jessie), these problems have been fixed in
version 1.12.1+dfsg-19+deb8u2.

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/

Mailing list: [email protected]