Protect yourself against future threats.
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AUSCERT Security Bulletin
ASB-2011.0043
A security update has been released for WordPress prior to 3.1.3
26 May 2011
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AusCERT Security Bulletin Summary
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Product: WordPress prior to 3.1.3
Operating System: UNIX variants (UNIX, Linux, OSX)
Windows
Impact/Access: Access Privileged Data -- Remote with User Interaction
Provide Misleading Information -- Remote with User Interaction
Reduced Security -- Remote with User Interaction
Resolution: Patch/Upgrade
Member content until: Saturday, June 25 2011
OVERVIEW
A security update has been released for WordPress prior to 3.1.3 which
corrects a number of issues.
IMPACT
The vendor has provided the following details regarding this update:
"* Various security hardening by Alexander Concha.
* Taxonomy query hardening by John Lamansky.
* Prevent sniffing out user names of non-authors by using canonical
redirects. Props Vernica Valeros.
* Media security fixes by Richard Lundeen of Microsoft, Jesse Ou of
Microsoft, and Microsoft Vulnerability Research.
* Improves file upload security on hosts with dangerous security
settings.
* Cleans up old WordPress import files if the import does not finish.
* Introduce clickjacking protection in modern browsers on admin and
login pages." [1]
MITIGATION
The vendor recommends upgrading to the latest version of WordPress
REFERENCES
[1] WordPress 3.1.3 (and WordPress 3.2 Beta 2)
http://wordpress.org/news/2011/05/wordpress-3-1-3/
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.
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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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