PT-2023-15965 · WordPress · The User Post Gallery - Upg
Published
2023-01-03
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Updated
2023-04-12
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CVE-2023-0039
None
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Name of the Vulnerable Software and Affected Versions
The User Post Gallery - UPG plugin for WordPress versions up to, and including 2.19
Description
The issue allows for authorization bypass, leading to remote command execution due to the use of a nopriv AJAX action and user-supplied function calls and parameters. This enables unauthenticated attackers to call arbitrary PHP functions, allowing actions such as adding new files that can be webshells and updating the site's options to permit anyone to register as an administrator.
Recommendations
For versions up to, and including 2.19, update to a version that fixes this issue to prevent authorization bypass and remote command execution.
As a temporary workaround, consider restricting access to the nopriv AJAX action until a patch is available.
Avoid using user-supplied function calls and parameters in the affected plugin until the issue is resolved.
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Related Identifiers
Affected Products
The User Post Gallery - Upg