Vulnerability CVE-2016-5771
Published: 2016-08-07

Description:
spl_array.c in the SPL extension in PHP before 5.5.37 and 5.6.x before 5.6.23 improperly interacts with the unserialize implementation and garbage collection, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free and application crash) via crafted serialized data.

See advisories in our WLB2 database:
Topic
Author
Date
High
Kerio Control Unified Threat Management Code Execution / XSS / Memory Corruption
R. Freingruber
24.09.2016

Type:

CWE-416

 (Use After Free)

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.5/10
6.4/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
PHP -> PHP 

 References:
http://github.com/php/php-src/commit/3f627e580acfdaf0595ae3b115b8bec677f203ee?w=1
http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00004.html
http://lists.opensuse.org/opensuse-updates/2016-08/msg00003.html
http://php.net/ChangeLog-5.php
http://rhn.redhat.com/errata/RHSA-2016-2750.html
http://www.debian.org/security/2016/dsa-3618
http://www.openwall.com/lists/oss-security/2016/06/23/4
http://www.securityfocus.com/bid/91401
https://bugs.php.net/bug.php?id=72433
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731
https://support.apple.com/HT207170
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