CVE-2015-8866: XEE
First published: Sun May 22 2016(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| PHP | >=5.5.0<5.5.22 | |
| PHP | >=5.6.0<5.6.6 | |
| PHP | >=7.0.0<7.0.27 | |
| PHP | >=7.1.0<7.1.13 | |
| PHP | >=7.2.0<7.2.1 | |
| Ubuntu | =12.04 | |
| Ubuntu | =14.04 | |
| Ubuntu | =15.10 | |
| openSUSE | =42.1 | |
| openSUSE | =13.2 | |
| SUSE Linux Enterprise Module for Web Scripting | =12 | |
| SUSE Linux Enterprise Software Development Kit | =12 | |
| SUSE Linux Enterprise Software Development Kit | =12-sp1 |
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Reference Links
- http://git.php.net/?p=php-src.git;a=commit;h=de31324c221c1791b26350ba106cc26bad23ace9
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00031.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00033.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00056.html
- http://rhn.redhat.com/errata/RHSA-2016-2750.html
- http://www.openwall.com/lists/oss-security/2016/04/24/1
- http://www.php.net/ChangeLog-5.php
- http://www.securityfocus.com/bid/87470
- http://www.ubuntu.com/usn/USN-2952-1
- http://www.ubuntu.com/usn/USN-2952-2
- https://bugs.launchpad.net/ubuntu/+source/php5/+bug/1509817
- https://bugs.php.net/bug.php?id=64938
- http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=de31324c221c1791b26350ba106cc26bad23ace9
Frequently Asked Questions
What is the severity of CVE-2015-8866?
CVE-2015-8866 has a medium severity level as it allows remote attackers to conduct XML External Entity (XXE) and XML Entity Expansion (XEE) attacks.
How do I fix CVE-2015-8866?
To fix CVE-2015-8866, update PHP to versions 5.5.22, 5.6.6, or later.
Which versions of PHP are affected by CVE-2015-8866?
CVE-2015-8866 affects PHP versions prior to 5.5.22, 5.6.x before 5.6.6, and also impacts specific versions of PHP 7.
What types of attacks can be performed due to CVE-2015-8866?
Attackers can perform XML External Entity (XXE) and XML Entity Expansion (XEE) attacks due to the vulnerability in CVE-2015-8866.
Is CVE-2015-8866 a remote vulnerability?
Yes, CVE-2015-8866 is considered a remote vulnerability as it can be exploited by attackers over the network.
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