CVE-2020-7062

NameCVE-2020-7062
DescriptionIn 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-2160-1
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
php5 (PTS)jessie5.6.33+dfsg-0+deb8u1vulnerable
jessie (security)5.6.40+dfsg-0+deb8u12fixed
php7.0 (PTS)stretch7.0.33-0+deb9u6vulnerable
stretch (security)7.0.33-0+deb9u7vulnerable
php7.3 (PTS)buster7.3.11-1~deb10u1vulnerable
buster (security)7.3.14-1~deb10u1vulnerable
php7.4 (PTS)bullseye, sid7.4.5-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
php5source(unstable)(unfixed)
php5sourcejessie5.6.40+dfsg-0+deb8u10DLA-2160-1
php7.0source(unstable)(unfixed)
php7.3source(unstable)7.3.15-1
php7.4source(unstable)7.4.3-1

Notes

[buster] - php7.3 <postponed> (Minor issue, can be fixed along in a future DSA)
[stretch] - php7.0 <postponed> (Minor issue, can be fixed along in a future DSA)
Fixed in PHP 7.4.3, 7.3.15, 7.2.28
PHP Bug: http://bugs.php.net/79221

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