Vulnerability CVE-2017-7890
Published: 2017-08-02   Modified: 2017-08-03

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.

Type:

CWE-200

 (Information Exposure)

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
PHP -> PHP 

 References:
http://php.net/ChangeLog-5.php
http://php.net/ChangeLog-7.php
http://www.debian.org/security/2017/dsa-3938
http://www.securityfocus.com/bid/99492
https://access.redhat.com/errata/RHSA-2018:0406
https://access.redhat.com/errata/RHSA-2018:1296
https://bugs.php.net/bug.php?id=74435
https://bugs.php.net/patch-display.php?bug=74435&patch=fix-74435-php-7.0&revision=1497970038
https://security.netapp.com/advisory/ntap-20180112-0001/
https://www.tenable.com/security/tns-2017-12
Copyright 2024, cxsecurity.com

 

Back to Top