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Improper Input Validation Affecting php-gd package, versions <0:5.4.16-43.el7_4.1

Severity

 Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
29.79% (98th percentile)

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  • Snyk IDSNYK-RHEL7-PHPGD-4795490
  • published26 Jul 2021
  • disclosed10 Jul 2017
Report a new vulnerability Found a mistake?

Introduced: 10 Jul 2017

CVE-2017-7890  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade RHEL:7 php-gd to version 0:5.4.16-43.el7_4.1 or higher.
This issue was patched in RHSA-2018:0406.

NVD Description

Note: Versions mentioned in the description apply only to the upstream php-gd package and not the php-gd package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

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.