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AUSCERT Security Bulletin
ASB-2010.0090
Multiple Security Vulnerabilities Corrected in vBulletin
24 March 2010
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AusCERT Security Bulletin Summary
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Product: vBulletin
Operating System: UNIX variants (UNIX, Linux, OSX)
Windows
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Cross-site Scripting -- Remote/Unauthenticated
Resolution: Patch/Upgrade
Member content until: Friday, April 23 2010
OVERVIEW
New versions of vBulletin have been released to correct multiple
security vulnerabilities.
IMPACT
The vendor has provided the following information regarding these
vulnerabilities:
1. "The vBulletin development team has identified a potential issue
with the strength of password encryption in vBulletin and we are
implementing a patch to address this issue.
In certain rare cases, hackers can exploit a non-vBulletin vector
(such as a bad plug-in) to access the vBulletin password database
and attempt to decrypt administrator and user passwords." [1]
2. The 4.0.2 PL 2, patch also fixes the XSS bug on the search pages.
This bug does not exist in vBulletin 3." [1]
MITIGATION
The vendor has advised users to take the following action [1]:
If you are running VB 3.7.x, upgrade to version 3.7.7
If you are running VB 3.8.x upgrade to version 3.8.5
If you are running VB 4 version 4.0 or 4.0.1, upgrade to 4.0.2 PL 2
REFERENCES
[1] Security Fix Releases 3.7.7 and 4.0.2 PL 2
http://www.vbulletin.com/forum/showthread.php?346486-Security-Fix-Releases-3.7.7-and-4.0.2-PL-2
AusCERT has made every effort to ensure that the information contained
in this document is accurate. However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
follow or act on information or advice contained in this security bulletin is
the responsibility of each user or organisation, and should be considered in
accordance with your organisation's site policies and procedures. AusCERT
takes no responsibility for consequences which may arise from following or
acting on information or advice contained in this security bulletin.
If you believe that your computer system has been compromised or attacked in
any way, we encourage you to let us know by completing the secure National IT
Incident Reporting Form at:
http://www.auscert.org.au/render.html?it=3192
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Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
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