National Cyber-Alert System
Vulnerability Summary for CVE-2008-3687
Original release date:08/14/2008
Last revised:10/29/2008
Source:
US-CERT/NIST
Overview
Heap-based buffer overflow in the flask_security_label function in Xen 3.3, when compiled with the XSM:FLASK module, allows unprivileged domain users (domU) to execute arbitrary code via the flask_op hypercall.
Impact
CVSS Severity (version 2.0):
Impact Subscore:
6.4
Exploitability Subscore:
8.6
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type:Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service
- Official Statement from Red Hat (08/21/2008)
-
Not vulnerable. This issue did not affect the version of Xen hypervisor as shipped with Red Hat Enterprise Linux 5, as it does not support XSM.
References to Advisories, Solutions, and Tools
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External Source: MLIST
Name: [xen-dev] 20080718 [PATCH][XSM][FLASK] Argument handling bugs in XSM:FLASK
Type: Patch Information
External Source: XF
Name: xen-flasksecuritylabel-bo(44608)
External Source: CONFIRM
Name: http://xenbits.xensource.com/xen-3.3-testing.hg?rev/fa66b33f975a
External Source: SECTRACK
Name: 1020731
External Source: BID
Name: 30834
External Source: VUPEN
Name: ADV-2008-2426
External Source: MISC
Name: http://theinvisiblethings.blogspot.com/2008/08/our-xen-0wning-trilogy-highlights.html
External Source: SECUNIA
Name: 31561
External Source: MISC
Name: http://invisiblethingslab.com/bh08/part2.pdf