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Category:   Application (Security)  >   pam_krb5 Vendors:   [Multiple Authors/Vendors]
pam-krb5 Lets Local Users Gain Elevated Privileges
SecurityTracker Alert ID:  1021711
SecurityTracker URL:
CVE Reference:   CVE-2009-0360, CVE-2009-0361   (Links to External Site)
Date:  Feb 12 2009
Impact:   Modification of system information, Modification of user information, Root access via local system, User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 3.13
Description:   Two vulnerabilities were reported in pam-krb5. A local user can obtain elevated privileges on the target system.

pam-krb5 does not use the correct API for initializing the Kerberos libraries in a set user id (setuid) environment when linked with MIT Kerberos [CVE-2009-0360]. As a result, a local user can bypass authentication in setuid applications that use PAM for authentication. The software is not affected when linked with Heimdal Kerberos.

A local user can cause pam-krb5 to overwrite and chown the file specified by the KRB5CCNAME environment variable when an application uses pam_setcred with PAM_REINITIALIZE_CREDS or PAM_REFRESH_CREDS to refresh existing user credentials [CVE-2009-0361].

The Russ Allbery version of pam-krb5 is affected.

Impact:   A local user can obtain elevated privileges on the target system.

A local user can overwrite and gain ownership of files on the target system.

Solution:   The vendor has issued a fixed version (3.13).

The vendor's advisory is available at:

Vendor URL: (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any), UNIX (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Feb 13 2009 (Sun Issues Advisory) pam-krb5 Lets Local Users Gain Elevated Privileges
Sun has issued an advisory for Solaris 9 and 10 and OpenSolaris.
Apr 7 2009 (HP Issues Fix for HP-UX) pam-krb5 Lets Local Users Gain Elevated Privileges
HP has issued a fix for HP-UX 11.11, 11.23, and 11.31.

 Source Message Contents

[Original Message Not Available for Viewing]

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