| Name | CVE-2016-7127 |
| Description | The imagegammacorrect function in ext/gd/gd.c in PHP before 5.6.25 and 7.x before 7.0.10 does not properly validate gamma values, which allows remote attackers to cause a denial of service (out-of-bounds write) or possibly have unspecified other impact by providing different signs for the second and third arguments. |
| 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-3689-1 |
Vulnerable and fixed packages
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 | fixed |
| stretch (lts), stretch | 7.0.33-0+deb9u19 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| libgd2 | source | (unstable) | (not affected) | | | |
| php5 | source | jessie | 5.6.26+dfsg-0+deb8u1 | | DSA-3689-1 | |
| php5 | source | (unstable) | 5.6.26+dfsg-1 | unimportant | | |
| php7.0 | source | (unstable) | 7.0.10-1 | unimportant | | |
Notes
- libgd2 <not-affected> (gamma correction is only implemented in PHP)
PHP Bug: https://bugs.php.net/bug.php?id=72730
Fixed in 7.0.10, 5.6.25
https://www.openwall.com/lists/oss-security/2016/09/02/5
https://github.com/php/php-src/commit/1bd103df00f49cf4d4ade2cfe3f456ac058a4eae?w=1