PHP 5.5.x < 5.5.32 Multiple Vulnerabilities

critical Nessus Plugin ID 88693
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Synopsis

The remote web server uses a version of PHP that is affected by multiple vulnerabilities.

Description

According to its banner, the version of PHP running on the remote web server is 5.5.x prior to 5.5.32. It is, therefore, affected by multiple vulnerabilities :

- The Perl-Compatible Regular Expressions (PCRE) library is affected by multiple vulnerabilities related to the handling of regular expressions, subroutine calls, and binary files. A remote attacker can exploit these to cause a denial of service, obtain sensitive information, or have other unspecified impact. (CVE-2015-8383, CVE-2015-8386, CVE-2015-8387, CVE-2015-8389, CVE-2015-8390, CVE-2015-8391, CVE-2015-8393, CVE-2015-8394)

- A flaw exists in file ext/standard/exec.c in the escapeshellcmd() and escapeshellarg() functions due to the program truncating NULL bytes in strings. A remote attacker can exploit this to bypass restrictions.

- A flaw exists in file ext/standard/streamsfuncs.c in the stream_get_meta_data() function due to a failure to restrict writing user-supplied data to fields not already set. A remote attacker can exploit this to falsify the output of the function, resulting in the insertion of malicious metadata.

- A type confusion error exists in file ext/wddx/wddx.c in the php_wddx_pop_element() function when deserializing WDDX packets. A remote attacker can exploit this to have an unspecified impact.

- A flaw exists in file ext/phar/phar_object.c in the PharFileInfo::getContent() method due to the use of uninitialized memory causing improper validation of user-supplied input. A remote attacker can exploit this to corrupt memory, resulting in a denial of service or the execution of arbitrary code.

- A NULL pointer dereference flaw exists in file ext/phar/tar.c in the phar_tar_setupmetadata() function when parsing metadata from a crafted TAR file. A remote attacker can exploit this to cause a denial of service.

- An integer overflow condition exists in file ext/standard/iptc.c in the iptcembed() function due to improper validation of user-supplied input. A remote attacker can exploit this to cause a heap-based buffer overflow, resulting in a denial of service or the execution of arbitrary code.

- An overflow condition exists in file ext/phar/tar.c in the phar_parse_tarfile() function due to improper validation of user-supplied input when decompressing TAR files. A remote attacker can exploit this to cause a stack-based buffer overflow, resulting in a denial of service or the execution of arbitrary code.
(CVE-2016-2554)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade to PHP version 5.5.32 or later.

See Also

http://php.net/ChangeLog-5.php#5.5.32

Plugin Details

Severity: Critical

ID: 88693

File Name: php_5_5_32.nasl

Version: 1.12

Type: remote

Family: CGI abuses

Published: 2/11/2016

Updated: 11/20/2019

Dependencies: php_version.nasl

Risk Information

CVSS Score Source: CVE-2016-2554

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:php:php

Required KB Items: www/PHP

Exploit Ease: No exploit is required

Patch Publication Date: 2/4/2016

Vulnerability Publication Date: 11/23/2015

Reference Information

CVE: CVE-2015-8383, CVE-2015-8386, CVE-2015-8387, CVE-2015-8389, CVE-2015-8390, CVE-2015-8391, CVE-2015-8393, CVE-2015-8394, CVE-2016-2554, CVE-2016-4342

BID: 79810, 82990