CVE-2017-7890

MEDIUM

Php < 5.6.30 - Information Disclosure

Title source: rule

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.

References (10)

[Release Notes, Vendor Advisory] http://php.net/ChangeLog-5.php

[Release Notes, Vendor Advisory] http://php.net/ChangeLog-7.php

[Third Party Advisory] http://www.debian.org/security/2017/dsa-3938

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/99492

[Vendor Advisory] https://access.redhat.com/errata/RHSA-2018:0406

[Patch, Vendor Advisory] https://bugs.php.net/bug.php?id=74435

[Issue Tracking, Patch, Vendor Advisory] https://bugs.php.net/patch-display.php?bug=74435&patch=fix-74435-php-7.0&revision=1497970038

[Vendor Advisory] https://security.netapp.com/advisory/ntap-20180112-0001/

[Vendor Advisory] https://access.redhat.com/errata/RHSA-2018:1296

[Third Party Advisory] https://www.tenable.com/security/tns-2017-12

Scores

CVSS v3 6.5

EPSS 0.2533

EPSS Percentile 96.1%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Details

CWE

CWE-200

Status published

Products (30)

php/php

php/php

php/php < 5.6.30

php/php

php/php

php/php

php/php

php/php

php/php

php/php

... and 20 more

Published Aug 02, 2017

Tracked Since Feb 18, 2026