Wordpress Mu: Cross-site scripting

Wordpress Mu is affected by cross-site scripting. Exposure depends on how the affected operation is made reachable by the site. Injected script can execute in the affected site's origin when the vulnerable output is viewed.

CVE / CNA score 4.9 CVSS · cve@mitre.org

NVD score 4.9 CVSS 2.0 · nvd@nist.gov

Component: Wordpress Mu
Plugin slug: wordpress-mu
Affected: See vendor advisory
Safe version: See mitigation notes
Published: Jul 10, 2009
Weakness: CWE-287 — Improper Authentication

This CVE was published Jul 10, 2009 and is one of 10 known issues for this plugin.

What to do

Update, patch or deactivate.

Update Wordpress Mu to a release outside the affected range, or disable and remove it until a fixed version is available.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical description

wp-admin/admin.php in WordPress and WordPress MU before 2.8.1 does not require administrative authentication to access the configuration of a plugin, which allows remote attackers to specify a configuration file in the page parameter to obtain sensitive information or modify this file, as demonstrated by the (1) collapsing-archives/options.txt, (2) akismet/readme.txt, (3) related-ways-to-take-action/options.php, (4) wp-security-scan/securityscan.php, and (5) wp-ids/ids-admin.php files. NOTE: this can be leveraged for cross-site scripting (XSS) and denial of service.

NVD vector: AV:N/AC:M/Au:S/C:P/I:P/A:N

References

Update, patch or deactivate.

Technical description

Primary and upstream sources