National Cyber-Alert System
Vulnerability Summary for CVE-2008-3825
Original release date:10/03/2008
Last revised:03/03/2009
Source:
US-CERT/NIST
Overview
pam_krb5 2.2.14 in Red Hat Enterprise Linux (RHEL) 5 and earlier, when the existing_ticket option is enabled, uses incorrect privileges when reading a Kerberos credential cache, which allows local users to gain privileges by setting the KRB5CCNAME environment variable to an arbitrary cache filename and running the (1) su or (2) sudo program. NOTE: there may be a related vector involving sshd that has limited relevance.
Impact
CVSS Severity (version 2.0):
Impact Subscore:
6.4
Exploitability Subscore:
3.4
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type:Provides unauthorized access, Allows partial confidentiality, integrity, and availability violation; Allows unauthorized disclosure of information; Allows disruption of service
- Official Statement from Red Hat (01/01/1900)
-
This issue did not affect the version of pam_krb5 shipped in Red Hat Enterprise Linux 2.1, 3, or 4.
References to Advisories, Solutions, and Tools
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External Source: FEDORA
Name: FEDORA-2008-8618
External Source: FEDORA
Name: FEDORA-2008-8605
External Source: CONFIRM
Name: https://bugzilla.redhat.com/show_bug.cgi?id=461960
External Source: XF
Name: pamkrb5-existingticket-privilege-escalation(45635)
External Source: SECTRACK
Name: 1020978
External Source: BID
Name: 31534
External Source: REDHAT
Name: RHSA-2008:0907
External Source: MANDRIVA
Name: MDVSA-2008:209
External Source: SECUNIA
Name: 32174
External Source: SECUNIA
Name: 32135
External Source: SECUNIA
Name: 32119
External Source: SUSE
Name: SUSE-SR:2008:027