Description

The imagetruecolortopalette function in ext/gd/gd.c in PHP before 5.6.25 and 7.x before 7.0.10 does not properly validate the number of colors, which allows remote attackers to cause a denial of service (select_colors allocation error and out-of-bounds write) or possibly have unspecified other impact via a large value in the third argument.

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/92755

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

https://bugs.php.net/bug.php?id=72697

https://github.com/php/php-src/commit/28022c9b1fd937436ab67bb3d61f652c108baf96

https://github.com/php/php-src/commit/b6f13a5ef9d6280cf984826a5de012a32c396cd4?w=1

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

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

Details

Risk Information

CVSS v2

CVSS v3