CVE-2015-8866

Public Exploit

Description

ext/libxml/libxml.c in PHP before 5.5.22 and 5.6.x before 5.6.6, when PHP-FPM is used, does not isolate each thread from libxml_disable_entity_loader changes in other threads, which allows remote attackers to conduct XML External Entity (XXE) and XML Entity Expansion (XEE) attacks via a crafted XML document, a related issue to CVE-2015-5161.

Category

9.6
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.71% Top 20%
Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory ubuntu.com Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory php.net Vendor Advisory php.net
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.ubuntu.com/usn/USN-2952-1 third party advisory vendor advisory
http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=de31324c221c1791b26350ba106cc26bad23ace9
https://bugs.launchpad.net/ubuntu/+source/php5/+bug/1509817 issue tracking third party advisory patch
http://rhn.redhat.com/errata/RHSA-2016-2750.html third party advisory vendor advisory
http://www.ubuntu.com/usn/USN-2952-2 third party advisory vendor advisory
http://www.php.net/ChangeLog-5.php release notes vendor advisory
https://bugs.php.net/bug.php?id=64938 issue tracking patch vendor advisory exploit
http://www.securityfocus.com/bid/87470 vdb entry third party advisory
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00031.html mailing list third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00033.html mailing list third party advisory vendor advisory
http://www.openwall.com/lists/oss-security/2016/04/24/1 mailing list third party advisory patch
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00056.html mailing list third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2015-8866?
CVE-2015-8866 has been scored as a critical severity vulnerability.
How to fix CVE-2015-8866?
To fix CVE-2015-8866, 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-2015-8866 being actively exploited in the wild?
It is possible that CVE-2015-8866 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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