CVE-2015-6831: Use After Free
First published: Tue Jan 19 2016(Updated: )
Multiple use-after-free vulnerabilities in SPL in PHP before 5.4.44, 5.5.x before 5.5.28, and 5.6.x before 5.6.12 allow remote attackers to execute arbitrary code via vectors involving (1) ArrayObject, (2) SplObjectStorage, and (3) SplDoublyLinkedList, which are mishandled during unserialization.
Credit: meissner@suse.de
| Affected Software | Affected Version | How to fix |
|---|---|---|
| PHP | <5.4.44 | |
| PHP | >=5.5.0<5.5.28 | |
| PHP | >=5.6.0<5.6.12 | |
| Debian GNU/Linux | =7.0 | |
| Debian GNU/Linux | =8.0 |
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Reference Links
- http://www.debian.org/security/2015/dsa-3344
- http://www.openwall.com/lists/oss-security/2015/08/19/3
- http://www.php.net/ChangeLog-5.php
- http://www.securityfocus.com/bid/76737
- https://bugs.php.net/bug.php?id=70155
- https://bugs.php.net/bug.php?id=70166
- https://bugs.php.net/bug.php?id=70168
- https://bugs.php.net/bug.php?id=70169
- https://security.gentoo.org/glsa/201606-10
Frequently Asked Questions
What is the severity of CVE-2015-6831?
CVE-2015-6831 is categorized as a critical vulnerability due to its potential to allow remote code execution.
How do I fix CVE-2015-6831?
To fix CVE-2015-6831, update PHP to version 5.4.44 or later, 5.5.28 or later, or 5.6.12 or later.
What types of objects are affected by CVE-2015-6831?
CVE-2015-6831 affects ArrayObject, SplObjectStorage, and SplDoublyLinkedList in PHP.
Can CVE-2015-6831 be exploited remotely?
Yes, CVE-2015-6831 can be exploited remotely by attackers through vulnerabilities in the unserialization process.
When was CVE-2015-6831 disclosed?
CVE-2015-6831 was disclosed in August 2015.
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- agent/software-canonical-lookup-request
- vendor/php
- canonical/php
- version/php/5.5.0
- version/php/5.6.0
- vendor/debian
- canonical/debian gnu/linux
- version/debian gnu/linux/7.0
- version/debian gnu/linux/8.0