Use After Free in PHP
CVE-2015-6831
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.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.071 (94.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 94.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.071 · newest: 0.071 · change: 0.000
Affected products
- PHP
- Debian Linux — versions 7.0, 8.0
Weakness classification (CWE)
References
- www.debian.org/security/2015/dsa-3344 (vendor-advisory)
- www.securityfocus.com/bid/76737 (vdb-entry)
- bugs.php.net/bug.php
- bugs.php.net/bug.php
- www.openwall.com/lists/oss-security/2015/08/19/3 (mailing-list)
- www.php.net/ChangeLog-5.php
- bugs.php.net/bug.php
- bugs.php.net/bug.php
- security.gentoo.org/glsa/201606-10 (vendor-advisory)
Frequently asked questions
- What is CVE-2015-6831?
- CVE-2015-6831 is a high-severity vulnerability in PHP, classified under Use After Free. CVSS score: 7.3/10. Published 2016-01-19.
- How severe is CVE-2015-6831?
- High severity. CVSS v3 base score is 7.3 out of 10.