CVE-2017-7890 — Sensitive Information Exposure in Libgd2

CWE-200 — Sensitive Information ExposureCWE-20 — Improper Input Validation9 documents7 sources
Severity
6.5MEDIUMNVD
EPSS
28.1%
top 3.51%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Debian Libgd2PHP
Timeline
PublishedAug 2
Latest updateMay 14

Description

The GIF decoding function gdImageCreateFromGifCtx in gd_gif_in.c in the GD Graphics Library (aka libgd), as used in PHP before 5.6.31 and 7.x before 7.1.7, does not zero colorMap arrays before use. A specially crafted GIF image could use the uninitialized tables to read ~700 bytes from the top of the stack, potentially disclosing sensitive information.

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:NExploitability: 2.8 | Impact: 3.6

Affected Packages2 packages

▶debiandebian/libgd2< libgd2 2.2.5-1 (bookworm)
▶NVDphp/php5.6.30+28

Patches

Patch: bugs.php.net ↗Patch: bugs.php.net ↗Patch: bugs.php.net ↗

🔴Vulnerability Details

2
GHSA
GHSA-2cx4-qmrc-3ff4: The GIF decoding function gdImageCreateFromGifCtx in gd_gif_in↗2022-05-14
▶
OSV
CVE-2017-7890: The GIF decoding function gdImageCreateFromGifCtx in gd_gif_in↗2017-08-02
▶

📋Vendor Advisories

4
Ubuntu
GD vulnerability↗2017-08-14
▶
Ubuntu
GD vulnerability↗2017-08-14
▶
Red Hat
php: Buffer over-read from unitialized data in gdImageCreateFromGifCtx function↗2017-07-10
▶
Debian
CVE-2017-7890: libgd2 - The GIF decoding function gdImageCreateFromGifCtx in gd_gif_in.c in the GD Graph...↗2017
▶

💬Community

2
Bugzilla
CVE-2017-7890 php: Buffer over-read from unitialized data in gdImageCreateFromGifCtx function [fedora-all]↗2017-07-21
▶
Bugzilla
CVE-2017-7890 php: Buffer over-read from unitialized data in gdImageCreateFromGifCtx function↗2017-07-21
▶
CVE-2017-7890 — Sensitive Information Exposure | cvebase