CVE-2016-7126

Public Exploit

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 7.77% Top 10%
Vendor Advisory gentoo.org Vendor Advisory redhat.com Vendor Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.php.net/ChangeLog-7.php release notes
https://security.gentoo.org/glsa/201611-22 third party advisory vendor advisory
http://www.securitytracker.com/id/1036680 vdb entry third party advisory
https://github.com/php/php-src/commit/b6f13a5ef9d6280cf984826a5de012a32c396cd4?w=1 issue tracking patch
http://rhn.redhat.com/errata/RHSA-2016-2750.html third party advisory vendor advisory
http://www.securityfocus.com/bid/92755 vdb entry third party advisory
http://www.php.net/ChangeLog-5.php release notes
https://www.tenable.com/security/tns-2016-19 third party advisory
http://openwall.com/lists/oss-security/2016/09/02/9 mailing list
https://bugs.php.net/bug.php?id=72697 issue tracking exploit
https://github.com/php/php-src/commit/28022c9b1fd937436ab67bb3d61f652c108baf96 patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2016-7126?
CVE-2016-7126 has been scored as a critical severity vulnerability.
How to fix CVE-2016-7126?
To fix CVE-2016-7126, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-7126 being actively exploited in the wild?
It is possible that CVE-2016-7126 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~8% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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