PHP ini_set function security bypass
| php-iniset-security-bypass (38590) |  Low Risk |
Description:
PHP could allow a local attacker to bypass security restrictions, caused by an error in the ini_set function. An attacker could exploit this vulnerability to overwrite arbitrary values within the http.conf php admin_value and php_admin_flag directives at runtime.
*CVSS:
| Base Score: | 2.1 |
| Access Vector: | Local |
| Access Complexity: | Low |
| Authentication: | None |
| Confidentiality Impact: | None |
| Integrity Impact: | Partial |
| Availability Impact: | None |
| Temporal Score: | 1.6 |
| Exploitability: | Proof-of-Concept |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Bypass Security
Remedy:
Upgrade to the latest version of PHP (5.2.5 or later), available from the PHP Web site. See References.
For other distributions:
Apply the appropriate update for your system. See References.
References:
- HPSBUX02332 SSRT080056 rev.1: HP-UX running Apache with PHP, Remote Denial of Service (DoS), Gain Extended Privileges.
- PHP Bug #41561: Values set with php_admin_* in httpd.conf can be overwritten with ini_set().
- PHP Web site: PHP: Hypertext Preprocessor.
- ASA-2008-198: HP-UX running Apache with PHP Remote Denial of Service (DoS) Gain Extended Privileges (HPSBUX02332)
- BID-26403: PHP 5.2.4 and Prior Versions Multiple Vulnerabilities
- CVE-2007-5900: PHP before 5.2.5 allows local users to bypass protection mechanisms configured through php_admin_value or php_admin_flag in httpd.conf by using ini_set to modify arbitrary configuration variables, a different issue than CVE-2006-4625.
- SA27648: PHP Multiple Vulnerabilities
- SECTRACK ID: 1018934: PHP Buffer Overflows, Filtering Bypass, and Configuration Bypass Bugs May Let Users Gain Elevated Privileges
- USN-720-1: PHP vulnerabilities
Platforms Affected:
- Canonical Ubuntu 6.06 LTS
- Canonical Ubuntu 7.10
- Canonical Ubuntu 8.04 LTS
- Canonical Ubuntu 8.10
- HP HP-UX B.11.11
- HP HP-UX B.11.23
- HP HP-UX B.11.31
- PHP PHP 5.0.0 Beta3
- PHP PHP 5.0.0 RC3
- PHP PHP 5.0.0 RC2
- PHP PHP 5.0.0 RC1
- PHP PHP 5.0.0 Beta4
- PHP PHP 5.0.0 Beta1
- PHP PHP 5.0.0 Beta2
- PHP PHP 5.0.0
- PHP PHP 5.0.1
- PHP PHP 5.0.2
- PHP PHP 5.0.3
- PHP PHP 5.0.4
- PHP PHP 5.0.5
- PHP PHP 5.1.0
- PHP PHP 5.1.1
- PHP PHP 5.1.2
- PHP PHP 5.1.3
- PHP PHP 5.1.4
- PHP PHP 5.1.5
- PHP PHP 5.1.6
- PHP PHP 5.2.0
- PHP PHP 5.2.1
- PHP PHP 5.2.2
- PHP PHP 5.2.3
- PHP PHP 5.2.4
Reported:
Nov 08, 2007
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For corrections or additions please email xforce@iss.net
* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.