National Cyber-Alert System
Vulnerability Summary for CVE-2008-3234
Original release date:07/18/2008
Last revised:09/11/2008
Source:
US-CERT/NIST
Overview
sshd in OpenSSH 4 on Debian GNU/Linux, and the 20070303 OpenSSH snapshot, allows remote authenticated users to obtain access to arbitrary SELinux roles by appending a :/ (colon slash) sequence, followed by the role name, to the username.
Impact
CVSS Severity (version 2.0):
Impact Subscore:
6.4
Exploitability Subscore:
8.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: 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 (07/21/2008)
-
Upon investigating this issue, the Red Hat Security Response Team has determined that this is not a vulnerability. The ability to specify a desired role when connecting to OpenSSH is a feature of how OpenSSH interacts with SELinux. Users can only assign themselves SELinux roles which they have permission to access. They cannot assign themselves arbitrary roles.
References to Advisories, Solutions, and Tools
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External Source: XF
Name: openssh-sshd-selinuxrole-unauth-access(44037)
External Source: BID
Name: 30276
External Source: MILW0RM
Name: 6094
