Detections
Analytics
PHP 5.5.x < 5.5.27 Multiple Vulnerabilities (BACKRONYM)
critical Nessus Plugin ID 84672
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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 5.5.x running on the remote web server is prior to 5.5.27. It is, therefore, affected by multiple vulnerabilities :- A security feature bypass vulnerability, known as 'BACKRONYM', exists due to a failure to properly enforce the requirement of an SSL/TLS connection when the --ssl client option is used. A man-in-the-middle attacker can exploit this flaw to coerce the client to downgrade to an unencrypted connection, allowing the attacker to disclose data from the database or manipulate database queries. (CVE-2015-3152)
- A flaw in the phar_convert_to_other function in ext/phar/phar_object.c could allow a remote attacker to cause a denial of service. (CVE-2015-5589)
- A Stack-based buffer overflow in the phar_fix_filepath function in ext/phar/phar.c could allow a remote attacker to cause a denial of service. (CVE-2015-5590)
- A flaw exists in the PHP Connector/C component due to a failure to properly enforce the requirement of an SSL/TLS connection when the --ssl client option is used.
A man-in-the-middle attacker can exploit this to downgrade the connection to plain HTTP when HTTPS is expected. (CVE-2015-8838)
- An unspecified flaw exists in the phar_convert_to_other() function in phar_object.c during the conversion of invalid TAR files. An attacker can exploit this flaw to crash a PHP application, resulting in a denial of service condition.
- The '!' character is not treated as a special character when delayed variable substitution is enabled. The functions escapeshellcmd() and escapeshellarg() are unable to properly sanitize arguments containing '!'.
An attacker can exploit this to execute arbitrary commands.
- A double-free flaw exists in zend_vm_execute.h due to improper handling of certain code. An attacker can exploit this flaw to crash a PHP application, resulting in a denial of service condition.
- A flaw exists in the parse_ini_file() and parse_ini_string() functions due to improper handling of strings that contain a line feed followed by an escape character. An attacker can exploit this to crash a PHP application, resulting in a denial of service condition.
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 5.5.27 or later.See Also
Plugin Details
Severity: Critical
ID: 84672
File Name: php_5_5_27.nasl
Version: 1.22
Type: remote
Family: CGI abuses
Published: 7/10/2015
Updated: 11/22/2024
Configuration: Enable thorough checks
Supported Sensors: Nessus
Enable CGI Scanning: true
Risk Information
VPR
Risk Factor: Medium
Score: 5.9
CVSS v2
Risk Factor: Critical
Base Score: 10
Temporal Score: 7.4
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2015-5589
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: CVSS:3.0/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: 7/10/2015
Vulnerability Publication Date: 12/3/2013
Reference Information
CVE: CVE-2015-3152, CVE-2015-5589, CVE-2015-5590, CVE-2015-8838