CVE-2020-7062

Name	CVE-2020-7062
Description	In PHP versions 7.2.x below 7.2.28, 7.3.x below 7.3.15 and 7.4.x below 7.4.3, when using file upload functionality, if upload progress tracking is enabled, but session.upload_progress.cleanup is set to 0 (disabled), and the file upload fails, the upload procedure would try to clean up data that does not exist and encounter null pointer dereference, which would likely lead to a crash.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-2160-1, DSA-4717-1, DSA-4719-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
php7.4 (PTS)	bullseye	7.4.33-1+deb11u5	fixed
	bullseye (security)	7.4.33-1+deb11u9	fixed

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

Package	Type	Release	Fixed Version	Origin
php5	source	jessie	5.6.40+dfsg-0+deb8u10	DLA-2160-1
php5	source	(unstable)	(unfixed)
php7.0	source	stretch	7.0.33-0+deb9u8	DSA-4717-1
php7.0	source	(unstable)	(unfixed)
php7.3	source	buster	7.3.19-1~deb10u1	DSA-4719-1
php7.3	source	(unstable)	7.3.15-1
php7.4	source	(unstable)	7.4.3-1

Fixed in PHP 7.4.3, 7.3.15, 7.2.28
PHP Bug: https://bugs.php.net/79221