PHP 7.0.x < 7.0.9 Multiple Vulnerabilities (httpoxy)
critical Nessus Plugin ID 92556
Language:
New! Plugin Severity Now Using CVSS v3
The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.
Synopsis
The version of PHP running on the remote web server is affected by multiple vulnerabilities.Description
According to its banner, the version of PHP running on the remote web server is 7.0.x prior to 7.0.9. It is, therefore, affected by multiple vulnerabilities :- A man-in-the-middle vulnerability exists, known as 'httpoxy', due to a failure to properly resolve namespace conflicts in accordance with RFC 3875 section 4.1.18. The HTTP_PROXY environment variable is set based on untrusted user data in the 'Proxy' header of HTTP requests. The HTTP_PROXY environment variable is used by some web client libraries to specify a remote proxy server. An unauthenticated, remote attacker can exploit this, via a crafted 'Proxy' header in an HTTP request, to redirect an application's internal HTTP traffic to an arbitrary proxy server where it may be observed or manipulated. (CVE-2016-5385)
- An overflow condition exists in the php_bz2iop_read() function within file ext/bz2/bz2.c due to improper handling of error conditions. An unauthenticated, remote attacker can exploit this, via a crafted request, to execute arbitrary code. (CVE-2016-5399)
- A flaw exists in the GD Graphics Library (libgd), specifically in the gdImageScaleTwoPass() function within file gd_interpolation.c, due to improper validation of user-supplied input. An unauthenticated, remote attacker can exploit this to cause a denial of service condition. (CVE-2016-6207)
- An integer overflow condition exists in the virtual_file_ex() function within file Zend/zend_virtual_cwd.c due to improper validation of user-supplied input. An unauthenticated, remote attacker can exploit this to cause a denial of service condition or the execution of arbitrary code. (CVE-2016-6289)
- A use-after-free error exists within the file ext/session/session.c when handling 'var_hash' destruction. An unauthenticated, remote attacker can exploit this to deference already freed memory, resulting in the execution of arbitrary code.
(CVE-2016-6290)
- An out-of-bounds read error exists in the exif_process_IFD_in_MAKERNOTE() function within file ext/exif/exif.c. An unauthenticated, remote attacker can exploit this to cause a denial of service condition or disclose memory contents. (CVE-2016-6291)
- A NULL pointer dereference flaw exists in the exif_process_user_comment() function within file ext/exif/exif.c. An unauthenticated, remote attacker can exploit this to cause a denial of service condition.
(CVE-2016-6292)
- Multiple out-of-bounds read errors exist in the locale_accept_from_http() function within file ext/intl/locale/locale_methods.c. An unauthenticated, remote attacker can exploit these to cause a denial of service condition or disclose memory contents.
(CVE-2016-6293, CVE-2016-6294)
- A use-after-free error exists within file ext/snmp/snmp.c when handling garbage collection during deserialization of user-supplied input. An unauthenticated, remote attacker can exploit this to deference already freed memory, resulting in the execution of arbitrary code. (CVE-2016-6295)
- A heap-based buffer overflow condition exists in the simplestring_addn() function within file simplestring.c due to improper validation of user-supplied input. An unauthenticated, remote attacker can exploit this to cause a denial of service condition or the execution of arbitrary code. (CVE-2016-6296)
- An integer overflow condition exists in the php_stream_zip_opener() function within file ext/zip/zip_stream.c due to improper validation of user-supplied input when handling zip streams. An unauthenticated, remote attacker can exploit this to cause a denial of service condition or the execution of arbitrary code. (CVE-2016-6297)
- An out-of-bounds read error exists in the GD Graphics Library (libgd), specifically in the gdImageScaleBilinearPalette() function within file gd_interpolation.c, when handling transparent color. An unauthenticated, remote attacker can exploit this to cause a denial of service condition or disclose memory contents.
- A heap-based buffer overflow condition exists in the mdecrypt_generic() function within file ext/mcrypt/mcrypt.c due to improper validation of user-supplied input. An unauthenticated, remote attacker can exploit this to cause a denial of service condition or the execution of arbitrary code.
- A flaw exists in the curl_unescape() function within file ext/curl/interface.c when handling string lengths.
An unauthenticated, remote attacker can exploit this to cause heap corruption, resulting in a denial of service condition.
- A heap-based buffer overflow condition exists in the mcrypt_generic() function within file ext/mcrypt/mcrypt.c due to improper validation of user-supplied input. An unauthenticated, remote attacker can exploit this to cause a denial of service condition or the execution of arbitrary code.
- A NULL write flaw exists in the GD Graphics Library (libgd) in the gdImageColorTransparent() function due to improper handling of negative transparent colors. A remote attacker can exploit this to disclose memory contents.
Solution
Upgrade to PHP version 7.0.9 or later.See Also
Plugin Details
Severity: Critical
ID: 92556
File Name: php_7_0_9.nasl
Version: 1.11
Type: remote
Family: CGI abuses
Published: 7/26/2016
Updated: 11/19/2019
Dependencies: php_version.nasl
Risk Information
CVSS Score Source: CVE-2016-6296
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: High
Base Score: 7.5
Temporal Score: 5.9
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Temporal Vector: E:POC/RL:OF/RC:C
CVSS v3
Risk Factor: Critical
Base Score: 9.8
Temporal Score: 8.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: E:P/RL:O/RC:C
Vulnerability Information
CPE: cpe:/a:php:php
Required KB Items: www/PHP
Exploit Available: true
Exploit Ease: No exploit is required
Patch Publication Date: 7/21/2016
Vulnerability Publication Date: 7/18/2016
Reference Information
CVE: CVE-2016-5385, CVE-2016-5399, CVE-2016-6207, CVE-2016-6289, CVE-2016-6290, CVE-2016-6291, CVE-2016-6292, CVE-2016-6293, CVE-2016-6294, CVE-2016-6295, CVE-2016-6296, CVE-2016-6297
BID: 91821, 92051, 92073, 92074, 92078, 92094, 92095, 92097, 92099