[arch-security] [ASA-201609-16] php: multiple issues

[Levente Polyak]

Arch Linux Security Advisory ASA-201609-16
==========================================

Severity: Critical
Date    : 2016-09-18
CVE-ID  : CVE-2016-7411 CVE-2016-7412 CVE-2016-7413 CVE-2016-7414
          CVE-2016-7416 CVE-2016-7417 CVE-2016-7418
Package : php
Type    : multiple issues
Remote  : Yes
Link    : https://wiki.archlinux.org/index.php/CVE

Summary
=======

The package php before version 7.0.11-1 is vulnerable to multiple issues
that can lead to arbitrary code execution and denial of service.

Resolution
==========

Upgrade to 7.0.11-1.

# pacman -Syu "php>=7.0.11-1"

The problems have been fixed upstream in version 7.0.11.

Workaround
==========

None.

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

- CVE-2016-7411 (arbitrary code execution)

A memory Corruption vulnerability was found in php's unserialize method.
This happened during the deserialized-object Destruction.

- CVE-2016-7412 (arbitrary code execution)

Php's mysqlnd extension assumes the `flags` returned for a BIT field
necessarily contains UNSIGNED_FLAG; this might not be the case, with a
rogue mysql server, or a MITM attack. A malicious mysql server or MITM
can return field metadata for BIT fields that does not contain the
UNSIGNED_FLAG, which leads to a heap overflow.

- CVE-2016-7413 (arbitrary code execution)

When WDDX tries to deserialize "recordset" element, use after free
happens if close tag for the field is not found. This happens only when
field names are set.

- CVE-2016-7414 (arbitrary code execution)

The entry.uncompressed_filesize* method does not properly verify the
input parameters. An attacker can create a signature.bin with size less
than 8, when this value is passed to phar_verify_signature as sig_len a
heap buffer overflow occurs.

- CVE-2016-7416 (arbitrary code execution)

Big locale string causes stack based overflow inside libicu.

- CVE-2016-7417 (insufficient validation)

The return value of spl_array_get_hash_table is not properly checked and
used on spl_array_get_dimension_ptr_ptr.

- CVE-2016-7418 (denial of service)

An attacker can trigger an Out-Of-Bounds Read in php_wddx_push_element
of wddx.c. A DoS (null pointer dereference) vulnerability can be
triggered in the wddx_deserialize function by providing a maliciously
crafted XML string.

Impact
======

A remote attacker can execute arbitrary code or cause a denial of
service on the affected host through different attack vectors.

References
==========

http://www.openwall.com/lists/oss-security/2016/09/15/10
https://bugs.php.net/bug.php?id=73052
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7411
https://bugs.php.net/bug.php?id=72293
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7412
https://bugs.php.net/bug.php?id=72860
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7413
https://bugs.php.net/bug.php?id=72928
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7414
https://bugs.php.net/bug.php?id=73007
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7416
https://bugs.php.net/bug.php?id=73029
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7417
https://bugs.php.net/bug.php?id=73065
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7418

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