Medium severity · published Aug 2, 2017
CVE-2017-7890
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…
6.5
CVSS
3.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.4% · higher than 89% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PH
PHP · PHP
through 5.6.30; 7.0.0; 7.0.1; 7.0.2; 7.0.3; 7.0.4; +23 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-7890
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-7890
Release Notes
http://php.net/ChangeLog-5.php
Release Notes
http://php.net/ChangeLog-7.php
www.debian.org
http://www.debian.org/security/2017/dsa-3938
Third Party Advisory
http://www.securityfocus.com/bid/99492
access.redhat.com
https://access.redhat.com/errata/RHSA-2018:0406
access.redhat.com
https://access.redhat.com/errata/RHSA-2018:1296
More from PHP
9.8
CVE-2026-109618
RCE via OOM corruption
9.8
CVE-2024-4577
Argument Injection in PHP-CGI
9.8
CVE-2019-11043
Underflow in PHP-FPM can lead to RCE
9.8
CVE-2016-10033
The mailSend function in the isMail transport in PHPMailer before 5.2.18 might allow remote attackers to pass extra parameters to the mail command and consequently execute…
9.8
CVE-2012-1823
PHP-CGI Query String Parameter Vulnerability