USN-719-1: pam-krb5 vulnerabilities

Releases

• Ubuntu 8.10
• Ubuntu 8.04

Packages

• libpam-krb5 -

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)

Update instructions

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

Ubuntu 8.10

• libpam-krb5 - 3.10-1ubuntu0.8.10.1

Ubuntu 8.04

• libpam-krb5 - 3.10-1ubuntu0.8.04.1

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

References

• CVE-2009-0360
• CVE-2009-0361