1. Ubuntu Security Notices
  2. USN-719-1

USN-719-1: pam-krb5 vulnerabilities

Publication date

12 February 2009

Overview

pam-krb5 vulnerabilities

Releases

Packages

Details

It was discovered that pam_krb5 parsed environment variables when run with
setuid applications. A local attacker could exploit this flaw to bypass
authentication checks and gain root privileges. (CVE-2009-0360)

Derek Chan discovered that pam_krb5 incorrectly handled refreshing existing
credentials when used with setuid applications. A local attacker could exploit
this to create or overwrite arbitrary files, and possibly gain root privileges.
(CVE-2009-0361)

It was discovered that pam_krb5 parsed environment variables when run with
setuid applications. A local attacker could exploit this flaw to bypass
authentication checks and gain root privileges. (CVE-2009-0360)

Derek Chan discovered that pam_krb5 incorrectly handled refreshing existing
credentials when used with setuid applications. A local attacker could exploit
this to create or overwrite arbitrary files, and possibly gain root privileges.
(CVE-2009-0361)

Update instructions

In general, a standard system upgrade is sufficient to effect the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
8.10 intrepid libpam-krb5 –  3.10-1ubuntu0.8.10.1
8.04 hardy libpam-krb5 –  3.10-1ubuntu0.8.04.1

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References

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