Protect yourself against future threats.
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AUSCERT Security Bulletin
ASB-2009.1058
WordPress 2.8.4: Security Release
20 August 2009
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AusCERT Security Bulletin Summary
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Product: WordPress
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Increased Privileges -- Remote/Unauthenticated
Modify Arbitrary Files -- Remote/Unauthenticated
Cross-site Scripting -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2009-2854 CVE-2009-2853 CVE-2009-2851
Member content until: Saturday, September 19 2009
OVERVIEW
WordPress has released an update to correct multiple security flaws.
IMPACT
CVE-2009-2851 - "Cross-site scripting (XSS) vulnerability in the
administrator interface in WordPress before 2.8.2 allows remote
attackers to inject arbitrary web script or HTML via a comment
author URL." [1][2]
CVE-2009-2853 - "Wordpress before 2.8.3 allows remote attackers to
gain privileges via a direct request to
(1) admin-footer.php,
(2) edit-category-form.php,
(3) edit-form-advanced.php,
(4) edit-form-comment.php,
(5) edit-link-category-form.php,
(6) edit-link-form.php,
(7) edit-page-form.php, and
(8) edit-tag-form.php in wp-admin/." [3]
CVE-2009-2854 - "Wordpress before 2.8.3 does not check capabilities
for certain actions, which allows remote attackers to make
unauthorized edits or additions via a direct request to
(1) edit-comments.php,
(2) edit-pages.php,
(3) edit.php,
(4) edit-category-form.php,
(5) edit-link-category-form.php,
(6) edit-tag-form.php,
(7) export.php, (8) import.php, or
(9) link-add.php in wp-admin/." [4]
In versions 2.8.3 and prior it may also be possible for an attacker
to perform a password reset via a specially crafted URL.
MITIGATION
It is advised to update your WordPress installation to the latest
version which at the time of writing is 2.8.4. [5]
REFERENCES
[1] CVE-2009-2851
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2009-2851
[2] WordPress 2.8.3: Security Release
http://wordpress.org/development/2009/08/wordpress-2-8-3-security-release/
[3] CVE-2009-2853
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2009-2853
[4] CVE-2009-2854
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2009-2854
[5] WordPress 2.8.4: Security Release
http://wordpress.org/development/2009/08/2-8-4-security-release/
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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