Debian Security Advisory
DLA-1742-1 wordpress -- LTS security update
- Date Reported:
- 01 Apr 2019
- Affected Packages:
- Security database references:
- In the Debian bugtracking system: Bug 924546.
In Mitre's CVE dictionary: CVE-2019-8942, CVE-2019-9787.
- More information:
Simon Scannell of Ripstech Technologies discovered multiple vulnerabilities in wordpress, a web blogging manager.
remote code execution in wordpress because an _wp_attached_file Post Meta entry can be changed to an arbitrary string, such as one ending with a .jpg?file.php substring. An attacker with author privileges can execute arbitrary code by uploading a crafted image containing PHP code in the Exif metadata.
wordpress does not properly filter comment content, leading to Remote Code Execution by unauthenticated users in a default configuration. This occurs because CSRF protection is mishandled, and because Search Engine Optimization of A elements is performed incorrectly, leading to XSS. The XSS results in administrative access.
For Debian 8
Jessie, these problems have been fixed in version 4.1.26+dfsg-1+deb8u1.
We recommend that you upgrade your wordpress packages.
Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS