CVE-2016-7127

HIGH

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.

References

http://openwall.com/lists/oss-security/2016/09/02/9

http://rhn.redhat.com/errata/RHSA-2016-2750.html

http://www.php.net/ChangeLog-5.php

http://www.php.net/ChangeLog-7.php

http://www.securityfocus.com/bid/92757

http://www.securitytracker.com/id/1036680

https://bugs.php.net/bug.php?id=72730

https://github.com/php/php-src/commit/1bd103df00f49cf4d4ade2cfe3f456ac058a4eae?w=1

https://security.gentoo.org/glsa/201611-22

https://www.tenable.com/security/tns-2016-19

Details

Source: MITRE

Published: 2016-09-12

Updated: 2018-01-05

Type: CWE-787

Risk Information

CVSS v2.0

Base Score: 7.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 10

Severity: HIGH

CVSS v3.0

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 3.9

Severity: CRITICAL