CVE-2019-8942

Name	CVE-2019-8942
Description	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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-1742-1, DSA-4401-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
wordpress (PTS)	buster	5.0.15+dfsg1-0+deb10u1	fixed
	buster (security)	5.0.21+dfsg1-0+deb10u1	fixed
	bullseye (security), bullseye	5.7.8+dfsg1-0+deb11u2	fixed
	bookworm	6.1.1+dfsg1-1	fixed
	trixie	6.5+dfsg1-1	fixed
	sid	6.5.2+dfsg1-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Origin
wordpress	source	jessie	4.1.26+dfsg-1+deb8u1	DLA-1742-1
wordpress	source	stretch	4.7.5+dfsg-2+deb9u5	DSA-4401-1
wordpress	source	(unstable)	5.0.1+dfsg1-1

https://blog.ripstech.com/2019/wordpress-image-remote-code-execution/
Issue fixed in 4.9.9 and 5.0.1 upstream