CVE-2016-9933

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 6.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-01-04 · updated 2026-06-17
Weakness: CWE-119

Description

Stack consumption vulnerability in the gdImageFillToBorder function in gd.c in the GD Graphics Library (aka libgd) before 2.2.2, as used in PHP before 5.6.28 and 7.x before 7.0.13, allows remote attackers to cause a denial of service (segmentation violation) via a crafted imagefilltoborder call that triggers use of a negative color value.

Affected products

Libgd: 2.2.1

References

http://lists.opensuse.org/opensuse-updates/2016-12/msg00133.html
http://lists.opensuse.org/opensuse-updates/2016-12/msg00142.html
http://lists.opensuse.org/opensuse-updates/2017-01/msg00002.html
http://lists.opensuse.org/opensuse-updates/2017-01/msg00034.html
http://lists.opensuse.org/opensuse-updates/2017-01/msg00054.html
http://www.debian.org/security/2017/dsa-3751
http://www.openwall.com/lists/oss-security/2016/12/12/2
http://www.php.net/ChangeLog-5.php
http://www.php.net/ChangeLog-7.php
http://www.securityfocus.com/bid/94865
https://access.redhat.com/errata/RHSA-2018:1296
https://bugs.php.net/bug.php?id=72696

Get alerted when CVE-2016-9933 or the next vulnerability affects your stack