CVE-2020-7060

NameCVE-2020-7060
DescriptionWhen using certain mbstring functions to convert multibyte encodings, in PHP versions 7.2.x below 7.2.27, 7.3.x below 7.3.14 and 7.4.x below 7.4.2 it is possible to supply data that will cause function mbfl_filt_conv_big5_wchar to read past the allocated buffer. This may lead to information disclosure or 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-2124-1, DSA-4626-1, DSA-4628-1
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
php7.0 (PTS)stretch7.0.33-0+deb9u8fixed
stretch (security)7.0.33-0+deb9u10fixed
php7.3 (PTS)buster, buster (security)7.3.19-1~deb10u1fixed
php7.4 (PTS)bullseye, sid7.4.11-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
php5sourcejessie5.6.40+dfsg-0+deb8u9DLA-2124-1
php5source(unstable)(unfixed)
php7.0sourcestretch7.0.33-0+deb9u7DSA-4628-1
php7.0source(unstable)(unfixed)
php7.3sourcebuster7.3.14-1~deb10u1DSA-4626-1
php7.3source(unstable)7.3.15-1
php7.4source(unstable)7.4.2-7

Notes

Fixed in PHP 7.4.2, 7.3.14, 7.2.27
PHP Bug: https://bugs.php.net/79037

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