PHP cURL library curl_init() security bypass
| php-curlinit-security-bypass (39852) |  Medium Risk |
Description:
The PHP cURL library (libcurl) could allow a remote attacker to bypass security restrictions, caused by improper validation of user-supplied input by the curl_init() function. A remote attacker could exploit this vulnerability using a file:// request containing a NULL character to bypass safe mode restrictions and gain unauthorized read access to arbitrary files on Web servers that are running an affected version of PHP.
Platforms Affected:
- Apple, Mac OS X 10.4
- Apple, Mac OS X 10.4.1
- Apple, Mac OS X 10.4.10
- Apple, Mac OS X 10.4.11
- Apple, Mac OS X 10.4.2
- Apple, Mac OS X 10.4.3
- Apple, Mac OS X 10.4.4
- Apple, Mac OS X 10.4.5
- Apple, Mac OS X 10.4.6
- Apple, Mac OS X 10.4.7
- Apple, Mac OS X 10.4.8
- Apple, Mac OS X 10.4.9
- Apple, Mac OS X 10.5.4
- Apple, Mac OS X Server 10.4
- Apple, Mac OS X Server 10.4.1
- Apple, Mac OS X Server 10.4.10
- Apple, Mac OS X Server 10.4.11
- Apple, Mac OS X Server 10.4.2
- Apple, Mac OS X Server 10.4.3
- Apple, Mac OS X Server 10.4.4
- Apple, Mac OS X Server 10.4.5
- Apple, Mac OS X Server 10.4.6
- Apple, Mac OS X Server 10.4.7
- Apple, Mac OS X Server 10.4.8
- Apple, Mac OS X Server 10.4.9
- Apple, Mac OS X Server 10.5
- Apple, Mac OS X Server 10.5.1
- Apple, Mac OS X Server 10.5.2
- Apple, Mac OS X Server 10.5.3
- Apple, Mac OS X Server 10.5.4
- Apple, Mac OS X Server 10.5.5
- Canonical, Ubuntu 6.06 LTS
- Canonical, Ubuntu 7.04
- Canonical, Ubuntu 7.10
- Canonical, Ubuntu 8.04 LTS
- 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 Beta3
- PHP, PHP 5.0.0 Beta2
- PHP, PHP 5.0.0 Beta1
- 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
- PHP, PHP 5.2.5
Remedy:
Upgrade to the latest CVS version of the cURL library, available from the PHP CVS Repository. See References.
For other distributions:
Apply the appropriate upgrade for your system. See References.
Consequences:
Bypass Security
References:
- Apple Web site, About Security Update 2008-007 at http://support.apple.com/kb/HT3216.
- Apple Web site, About Security Update 2008-005 at http://support.apple.com/kb/HT2647.
- Full-Disclosure Mailing List, Tue, 22 Jan 2008 23:51:19 +0100, PHP 5.2.5 cURL safe_mode bypass at http://seclists.org/fulldisclosure/2008/Jan/0464.html.
- PHP CVS Repository, [cvs] Index of /php-src/ext/curl at http://cvs.php.net/viewcvs.cgi/php-src/NEWS?revision=1.2027.2.547.2.1047&view=markup.
- BID-27413: PHP cURL 'safe mode' Security Bypass Vulnerability
- BID-29009: PHP 5.2.5 and Prior Versions Multiple Vulnerabilities
- BID-31681: RETIRED: Apple Mac OS X 2008-007 Multiple Security Vulnerabilities
- CVE-2007-4850: curl/interface.c in the cURL library (aka libcurl) in PHP 5.2.4 and 5.2.5 allows context-dependent attackers to bypass safe_mode and open_basedir restrictions and read arbitrary files via a file:// request containing a \x00 sequence, a different vulnerability than CVE-2006-2563.
- FrSIRT/ADV-2008-1412: PHP Multiple Buffer Overflow and Restriction Bypass Vulnerabilities
- FrSIRT/ADV-2008-2268: Apple Mac OS X Code Execution and Security Bypass Vulnerabilities
- FrSIRT/ADV-2008-2780: Apple Mac OS X Code Execution and Security Bypass Vulnerabilities
- SA30048: PHP Multiple Vulnerabilities
- SA31326: Apple Mac OS X Security Update Fixes Multiple Vulnerabilities
- SA32222: Apple Mac OS X Security Update Fixes Multiple Vulnerabilities
- USN-628-1: PHP vulnerabilities
Reported:
Jan 22, 2008
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