CVEvulnerability

CVE-2017-7890

6.5 MEDIUM Published 2017-08-02 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2017-08-02
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.0 ([email protected])
6.5 MEDIUM — CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CVSS 2.0 ([email protected])
4.3 MEDIUM — AV:N/AC:M/Au:N/C:P/I:N/A:N
Weaknesses
CWE-200

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.

Affected configurations

• php php (<= 5.6.30) • php php 7.0.0 • php php 7.0.1 • php php 7.0.2 • php php 7.0.3 • php php 7.0.4 • php php 7.0.5 • php php 7.0.6 • php php 7.0.7 • php php 7.0.8 • php php 7.0.9 • php php 7.0.10 • php php 7.0.11 • php php 7.0.12 • php php 7.0.13 • php php 7.0.14 • php php 7.0.15 • php php 7.0.16 • php php 7.0.17 • php php 7.0.18 • php php 7.0.19 • php php 7.0.20 • php php 7.1.0 • php php 7.1.1 • php php 7.1.2 • php php 7.1.3 • php php 7.1.4 • php php 7.1.5 • php php 7.1.6

Related

Weakness · CWE (1)

  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor weakness

References