CVE-2016-7124

Public Exploit

Description

ext/standard/var_unserializer.c in PHP before 5.6.25 and 7.x before 7.0.10 mishandles certain invalid objects, which allows remote attackers to cause a denial of service or possibly have unspecified other impact via crafted serialized data that leads to a (1) __destruct call or (2) magic method call.

Category

9.8
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 78.49% Top 5%
Vendor Advisory gentoo.org Vendor Advisory redhat.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 vendor advisory
http://www.securitytracker.com/id/1036680 vdb entry
http://www.securityfocus.com/bid/92756 vdb entry
http://rhn.redhat.com/errata/RHSA-2016-2750.html vendor advisory
https://bugs.php.net/bug.php?id=72663 issue tracking exploit
http://www.php.net/ChangeLog-5.php release notes
https://www.tenable.com/security/tns-2016-19
http://openwall.com/lists/oss-security/2016/09/02/9 mailing list
https://github.com/php/php-src/commit/20ce2fe8e3c211a42fee05a461a5881be9a8790e?w=1 patch issue tracking

Frequently Asked Questions

What is the severity of CVE-2016-7124?
CVE-2016-7124 has been scored as a critical severity vulnerability.
How to fix CVE-2016-7124?
To fix CVE-2016-7124, 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-2016-7124 being actively exploited in the wild?
It is possible that CVE-2016-7124 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~78% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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