WP Super Cache <= 1.8 - Unauthenticated Cache Poisoning
Strategic Overview
- Status
- Patched in 1.9
- Affected Plugin
- WP Super Cache
- Affected Version
<= 1.8- CVSS
- 6.5Medium
- Weakness type
- CWE-349 · Acceptance of Extraneous Untrusted Data With Trusted Data
- CVE
CVE pending
At a glance
This record tracks a medium-severity Acceptance of Extraneous Untrusted Data With Trusted Data vulnerability in the WP Super Cache WordPress plugin, affecting versions <= 1.8. It carries a CVSS score of 6.5 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 1.9; sites on affected versions should update now. Disclosed October 2022.
Vulnerability Overview
The WP Super Cache plugin for WordPress is vulnerable to Unauthenticated Cache Poisoning in versions up to, and including, 1.8. This is due to insufficient parsing of URLs containing double slashes. This makes it possible for unauthenticated attackers to poison the site's cache potentially resulting in harmful content being served to visitors.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.
CWE-349: Acceptance of Extraneous Untrusted Data With Trusted Data
The product, when processing trusted data, accepts any untrusted data that is also included with the trusted data, treating the untrusted data as if it were trusted.
Remediation
Update to version 1.9, or a newer patched version
How does WordSec protect against this?
This one needs no account at all, which puts it outside what login hardening can reach; WordSec's login security narrows the account-level paths around it, and the firewall is what inspects the request itself. None of that substitutes for the fix: WP Super Cache 1.9 closes this, and updating the plugin is the step that ends it.
- Login Security
- Alerts
External References
Related records
Other vulnerabilities in WP Super Cache
- 9.8CVE-2013-2011: WP Super Cache < 1.3.2 Remote Code Execution
CVE-2013-2011 - 8.8CVE-2013-2009: WP Super Cache <= 1.2 Remote Code Execution
CVE-2013-2009 - 8.1WP Super Cache <= 1.4.4 PHP Object Injection
- 7.2CVE-2021-24312: WP Super Cache <= 1.7.2 Remote Code Execution
CVE-2021-24312 - 7.2CVE-2021-24209: WP Super Cache <= 1.7.1 Remote Code Execution
CVE-2021-24209 - 7.2WP Super Cache < 1.4.3 Cross Site Scripting
- 6.1CVE-2013-2008: WP Super Cache Plugin <= 1.3 Multiple XSS
CVE-2013-2008 - 5.4WP Super Cache <= 1.4.4 File Deletion
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