National Cyber-Alert System
Vulnerability Summary for CVE-2007-0822
Original release date:02/07/2007
Last revised:11/15/2008
Source:
US-CERT/NIST
Overview
umount, when running with the Linux 2.6.15 kernel on Slackware Linux 10.2, allows local users to trigger a NULL dereference and application crash by invoking the program with a pathname for a USB pen drive that was mounted and then physically removed, which might allow the users to obtain sensitive information, including core file contents.
Impact
CVSS Severity (version 2.0):
Impact Subscore:
2.9
Exploitability Subscore:
3.4
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type:Allows unauthorized disclosure of information
- Official Statement from Red Hat (02/09/2007)
-
Red Hat does not consider this issue to be a security vulnerability. On Red Hat Enterprise Linux processes that change their effective UID do not dump core by default when they receive a fatal signal. Therefore the NULL pointer dereference does not lead to an information leak.
References to Advisories, Solutions, and Tools
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External Source: OSVDB
Name: 33652
External Source: MISC
Name: http://gotfault.wordpress.com/2007/01/18/umount-bug/
External Source: FULLDISC
Name: 20070201 umount crash and xterm (kind of) information leak!
External Source: SECTRACK
Name: 1017729
External Source: BID
Name: 22850
External Source: MANDRIVA
Name: MDKSA-2007:053
External Source: MANDRIVA
Name: MDKSA-2007:053