CVE-2017-7890
high-risk
Published 2017-08-02
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.
Do I need to act?
!
28.1% chance of exploitation in next 30 days
EPSS score — higher than 72% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.5/10
Medium
NETWORK
/ LOW complexity
Affected Products (20)
Affected Vendors
References (20)
Release Notes
http://php.net/ChangeLog-5.php
Release Notes
http://php.net/ChangeLog-7.php
Third Party Advisory
http://www.securityfocus.com/bid/99492
Release Notes
http://php.net/ChangeLog-5.php
Release Notes
http://php.net/ChangeLog-7.php
Third Party Advisory
http://www.securityfocus.com/bid/99492
61
/ 100
high-risk
Severity
24/34 · High
Exploitability
15/34 · Moderate
Exposure
22/34 · High