[arch-security] [ASA-201412-23] php: use after free

[Levente Polyak]

Arch Linux Security Advisory ASA-201412-23
==========================================

Severity: Moderate
Date    : 2014-12-19
CVE-ID  : CVE-2014-8142
Package : php
Type    : use after free
Remote  : Yes
Link    : https://wiki.archlinux.org/index.php/CVE-2014

Summary
=======

The package php before version 5.6.4-1 is suffering from a use after
free flaw leading to denial of service and possibly arbitrary code
execution.

Resolution
==========

Upgrade to 5.6.4-1.

# pacman -Syu "php>=5.6.4-1"

The problem has been fixed in version 5.6.4.

Workaround
==========

None.

Description
===========

A use-after-free flaw was found in PHP unserialize(). An untrusted input
could cause PHP interpreter to crash or, possibly, execute arbitrary
code when processed using unserialize().

Impact
======

A remote attacker able to pass crafted data to the unserialize function
is able to force a crash or possibly execute arbitrary code.

References
==========

https://access.redhat.com/security/cve/CVE-2014-8142
https://bugzilla.redhat.com/show_bug.cgi?id=1175718
https://bugs.php.net/bug.php?id=68545

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