CVE-2016-7127
The imagegammacorrect function in ext/gd/gd.c in PHP before 5.6.25 and 7.x before 7.0.10 does not properly validate gamma values, which allows remote attackers to cause a denial of service (out-of-bounds write) or possibly have unspecified other impact…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (6.84%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The imagegammacorrect function in ext/gd/gd.c in PHP before 5.6.25 and 7.x before 7.0.10 does not properly validate gamma values, which allows remote attackers to cause a denial of service (out-of-bounds write) or possibly have unspecified other impact by providing different signs for the second and third arguments.
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 6.84% probability · 94th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- php/php
- Source
- cve@mitre.org
References
- http://openwall.com/lists/oss-security/2016/09/02/9Mailing List
- http://rhn.redhat.com/errata/RHSA-2016-2750.html
- http://www.php.net/ChangeLog-5.phpRelease Notes
- http://www.php.net/ChangeLog-7.phpRelease Notes
- http://www.securityfocus.com/bid/92757
- http://www.securitytracker.com/id/1036680
- https://bugs.php.net/bug.php?id=72730Exploit, Issue Tracking
- https://github.com/php/php-src/commit/1bd103df00f49cf4d4ade2cfe3f456ac058a4eae?w=1Issue Tracking, Patch
- https://security.gentoo.org/glsa/201611-22
- https://www.tenable.com/security/tns-2016-19
- http://openwall.com/lists/oss-security/2016/09/02/9Mailing List
- http://rhn.redhat.com/errata/RHSA-2016-2750.html
- http://www.php.net/ChangeLog-5.phpRelease Notes
- http://www.php.net/ChangeLog-7.phpRelease Notes
- http://www.securityfocus.com/bid/92757
- http://www.securitytracker.com/id/1036680
- https://bugs.php.net/bug.php?id=72730Exploit, Issue Tracking
- https://github.com/php/php-src/commit/1bd103df00f49cf4d4ade2cfe3f456ac058a4eae?w=1Issue Tracking, Patch
- https://security.gentoo.org/glsa/201611-22
- https://www.tenable.com/security/tns-2016-19
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.