| Name | CVE-2019-6977 |
| Description | gdImageColorMatch in gd_color_match.c in the GD Graphics Library (aka LibGD) 2.2.5, as used in the imagecolormatch function in PHP before 5.6.40, 7.x before 7.1.26, 7.2.x before 7.2.14, and 7.3.x before 7.3.1, has a heap-based buffer overflow. This can be exploited by an attacker who is able to trigger imagecolormatch calls with crafted image data. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-1651-1, DLA-1679-1, DSA-4384-1 |
| Debian Bugs | 920645 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| libgd2 (PTS) | jessie, jessie (lts) | 2.1.0-5+deb8u15 | fixed |
| stretch (security) | 2.2.4-2+deb9u4 | fixed | |
| stretch (lts), stretch | 2.2.4-2+deb9u6 | fixed | |
| buster (security), buster, buster (lts) | 2.2.5-5.2+deb10u1 | fixed | |
| bullseye | 2.3.0-2 | fixed | |
| bookworm | 2.3.3-9 | fixed | |
| sid, trixie | 2.3.3-12 | fixed | |
| php5 (PTS) | jessie, jessie (lts) | 5.6.40+dfsg-0+deb8u21 | fixed |
| php7.0 (PTS) | stretch (security) | 7.0.33-0+deb9u12 | vulnerable |
| stretch (lts), stretch | 7.0.33-0+deb9u19 | vulnerable | |
| php7.3 (PTS) | buster, buster (lts) | 7.3.31-1~deb10u8 | fixed |
| buster (security) | 7.3.31-1~deb10u7 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| libgd2 | source | wheezy | (unfixed) | end-of-life | ||
| libgd2 | source | jessie | 2.1.0-5+deb8u12 | DLA-1651-1 | ||
| libgd2 | source | stretch | 2.2.4-2+deb9u4 | DSA-4384-1 | ||
| libgd2 | source | (unstable) | 2.2.5-5.1 | 920645 | ||
| php5 | source | jessie | 5.6.40+dfsg-0+deb8u1 | DLA-1679-1 | ||
| php5 | source | (unstable) | (unfixed) | unimportant | ||
| php7.0 | source | (unstable) | (unfixed) | unimportant | ||
| php7.3 | source | (unstable) | 7.3.1-1 | unimportant |
Fixed in 5.6.40, 7.1.26, 7.2.14, 7.3.1
PHP Bug: https://bugs.php.net/bug.php?id=77270
https://github.com/php/php-src/commit/7a12dad4dd6c370835b13afae214b240082c7538