Protect yourself against future threats.
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AUSCERT Security Bulletin
ASB-2017.0151
WordPress 4.8.2 Security and Maintenance Release
20 September 2017
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AusCERT Security Bulletin Summary
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Product: Wordpress
Operating System: UNIX variants (UNIX, Linux, OSX)
Windows
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Cross-site Scripting -- Remote with User Interaction
Access Confidential Data -- Remote/Unauthenticated
Provide Misleading Information -- Remote with User Interaction
Resolution: Patch/Upgrade
Member content until: Friday, October 20 2017
OVERVIEW
Multiple vulnerabilities have been identified in WordPress prior to
version 4.8.2. [1]
IMPACT
The vendor has provided the following details regarding the
vulnerability:
"$wpdb->prepare() can create unexpected and unsafe queries leading
to potential SQL injection (SQLi). WordPress core is not directly
vulnerable to this issue, but we've added hardening to prevent
plugins and themes from accidentally causing a vulnerability.
Reported by Slavco
A cross-site scripting (XSS) vulnerability was discovered in the
oEmbed discovery. Reported by xknown of the WordPress Security Team.
A cross-site scripting (XSS) vulnerability was discovered in the
visual editor. Reported by Rodolfo Assis (@brutelogic) of Sucuri
Security.
A path traversal vulnerability was discovered in the file unzipping
code. Reported by Alex Chapman (noxrnet).
A cross-site scripting (XSS) vulnerability was discovered in the
plugin editor. Reported by (Chen Ruiqi).
An open redirect was discovered on the user and term edit screens.
Reported by Yasin Soliman (ysx).
A path traversal vulnerability was discovered in the customizer.
Reported by Weston Ruter of the WordPress Security Team.
A cross-site scripting (XSS) vulnerability was discovered in
template names. Reported by Luka (sikic).
A cross-site scripting (XSS) vulnerability was discovered in the
link modal. Reported by Anas Roubi (qasuar). " [1]
MITIGATION
The vendor strongly encourages users to update to the latest
version. [1]
REFERENCES
[1] WordPress 4.8.2 Security and Maintenance Release
https://wordpress.org/news/2017/09/wordpress-4-8-2-security-and-maintenance-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.
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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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