Arbitrary Code Injection Affecting wordpress package, versions *
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1804-WORDPRESS-337808
- published20 Feb 2019
- disclosed20 Feb 2019
Introduced: 20 Feb 2019
CVE-2019-8942 (opens in a new tab)How to fix?
There is no fixed version for Ubuntu:18.04 wordpress.
NVD Description
Note: Versions mentioned in the description apply only to the upstream wordpress package and not the wordpress package as distributed by Ubuntu.
See How to fix? for Ubuntu:18.04 relevant fixed versions and status.
WordPress before 4.9.9 and 5.x before 5.0.1 allows remote code execution 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. Exploitation can leverage CVE-2019-8943.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2019-8942
- https://www.debian.org/security/2019/dsa-4401
- https://lists.debian.org/debian-lts-announce/2019/03/msg00044.html
- https://security-tracker.debian.org/tracker/CVE-2019-8942
- https://www.exploit-db.com/exploits/46511/
- https://www.exploit-db.com/exploits/46662/
- http://packetstormsecurity.com/files/152396/WordPress-5.0.0-crop-image-Shell-Upload.html
- https://blog.ripstech.com/2019/wordpress-image-remote-code-execution/
- https://wpvulndb.com/vulnerabilities/9222
- http://www.rapid7.com/db/modules/exploit/multi/http/wp_crop_rce
- http://www.securityfocus.com/bid/107088
- https://github.com/brianwrf/WordPress_4.9.8_RCE_POC