CVE-2022-31630

NameCVE-2022-31630
DescriptionIn PHP versions prior to 7.4.33, 8.0.25 and 8.1.12, when using imageloadfont() function in gd extension, it is possible to supply a specially crafted font file, such as if the loaded font is used with imagechar() function, the read outside allocated buffer will be used. This can lead to crashes or disclosure of confidential information.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDSA-5277-1

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
php7.3source(unstable)(not affected)
php7.4sourcebullseye7.4.33-1+deb11u1DSA-5277-1
php7.4source(unstable)(unfixed)
php8.1source(unstable)8.1.12-1

Notes

- php7.3 <not-affected> (Vulnerable code introduced later)
Fixed in 8.1.12, 8.0.25, 7.4.33
PHP Bug: https://bugs.php.net/bug.php?id=81739
Introduced by: https://github.com/php/php-src/commit/88b603768f8e5074ad5cbdccc1e0779089fac9d0 (php-7.4.0alpha2)
Fixed by: https://github.com/php/php-src/commit/ac45ce85c8750a6fb9745093180674d029acc5bd (PHP-8.1.12)
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