| Name | CVE-2020-7065 |
| Description | In PHP versions 7.3.x below 7.3.16 and 7.4.x below 7.4.4, while using mb_strtolower() function with UTF-32LE encoding, certain invalid strings could cause PHP to overwrite stack-allocated buffer. This could lead to memory corruption, crashes and potentially code execution. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-4719-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| php5 (PTS) | jessie, jessie (lts) | 5.6.40+dfsg-0+deb8u21 | fixed |
| php7.0 (PTS) | stretch (security) | 7.0.33-0+deb9u12 | fixed |
| stretch (lts), stretch | 7.0.33-0+deb9u19 | fixed |
| php7.3 (PTS) | buster, buster (lts) | 7.3.31-1~deb10u8 | fixed |
| buster (security) | 7.3.31-1~deb10u7 | fixed |
| php7.4 (PTS) | bullseye | 7.4.33-1+deb11u5 | fixed |
| bullseye (security) | 7.4.33-1+deb11u7 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| php5 | source | wheezy | (not affected) | | | |
| php5 | source | (unstable) | (not affected) | | | |
| php7.0 | source | (unstable) | (not affected) | | | |
| php7.3 | source | buster | 7.3.19-1~deb10u1 | | DSA-4719-1 | |
| php7.3 | source | (unstable) | (unfixed) | | | |
| php7.4 | source | (unstable) | 7.4.5-1 | | | |
Notes
- php7.0 <not-affected> (Vulnerable code introduced later)
- php5 <not-affected> (Vulnerable code introduced later)
Fixed in PHP 7.4.4, 7.3.16
PHP Bug: https://bugs.php.net/79371
https://git.php.net/?p=php-src.git;a=commit;h=1fdffd1c55d771ca22ae217784ab75fce592ad38
[wheezy] - php5 <not-affected> (vulnerable code not present)