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, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-2160-1, DSA-4717-1, DSA-4719-1, ELA-220-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
php5 (PTS)jessie, jessie (lts)5.6.40+dfsg-0+deb8u21fixed
php7.0 (PTS)stretch (security)7.0.33-0+deb9u12fixed
stretch (lts), stretch7.0.33-0+deb9u19fixed
php7.3 (PTS)buster, buster (lts)7.3.31-1~deb10u8fixed
buster (security)7.3.31-1~deb10u7fixed
php7.4 (PTS)bullseye7.4.33-1+deb11u5fixed
bullseye (security)7.4.33-1+deb11u7fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
php5sourcewheezy5.4.45-0+deb7u28ELA-220-1
php5sourcejessie5.6.40+dfsg-0+deb8u10DLA-2160-1
php5source(unstable)(unfixed)
php7.0sourcestretch7.0.33-0+deb9u8DSA-4717-1
php7.0source(unstable)(unfixed)
php7.3sourcebuster7.3.19-1~deb10u1DSA-4719-1
php7.3source(unstable)7.3.15-1
php7.4source(unstable)7.4.3-1

Notes

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

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