CVE-2016-5766
HIGH severity · CVSS 8.8 · Integer overflow
8.8CVSS HIGH
Summary
Integer overflow in the _gd2GetHeader function in gd_gd2.c in the GD Graphics Library (aka libgd) before 2.2.3, as used in PHP before 5.5.37, 5.6.x before 5.6.23, and 7.x before 7.0.8, allows remote attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have unspecified other impact via crafted chunk dimensions in an image.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)8%
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: http://github.com/php/php-src/commit/7722455726bec8c53458a32851d2a87982cf0eac?w=1 ↗
Additional information
- NVD record
- http://github.com/php/php-src/commit/7722455726bec8c53458a32851d2a87982cf0eac?w=1Patch
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00025.html
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00003.html
- http://php.net/ChangeLog-5.php
- http://php.net/ChangeLog-7.php
- http://rhn.redhat.com/errata/RHSA-2016-2598.html
- http://rhn.redhat.com/errata/RHSA-2016-2750.html