fopen_wrappers.c in PHP 4.4.0, and possibly other versions, does not properly restrict access to other directories when the open_basedir directive includes a trailing slash, which allows PHP scripts in one directory to access files in other directories whose names are substrings of the original directory.

A bug has been found in the handling of the open_basedir directive handling. Contrary to the specification, the value of open_basedir was handled as a prefix instead of a proper directory name even if it was terminated by a slash ('/'). For example, this allowed PHP scripts to access the directory /home/user10 when open_basedir was configured to '/home/user1/'.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

A number of vulnerabilities were discovered in PHP :

An issue with fopen_wrappers.c would not properly restrict access to other directories when the open_basedir directive included a trailing slash (CVE-2005-3054); this issue does not affect Corporate Server 2.1.

An issue with the apache2handler SAPI in mod_php could allow an attacker to cause a Denial of Service via the session.save_path option in an .htaccess file or VirtualHost stanza (CVE-2005-3319); this issue does not affect Corporate Server 2.1.

A Denial of Service vulnerability was discovered in the way that PHP processes EXIF image data which could allow an attacker to cause PHP to crash by supplying carefully crafted EXIF image data (CVE-2005-3353).

A cross-site scripting vulnerability was discovered in the phpinfo() function which could allow for the injection of JavaScript or HTML content onto a page displaying phpinfo() output, or to steal data such as cookies (CVE-2005-3388).

A flaw in the parse_str() function could allow for the enabling of register_globals, even if it was disabled in the PHP configuration file (CVE-2005-3389).

A vulnerability in the way that PHP registers global variables during a file upload request could allow a remote attacker to overwrite the $GLOBALS array which could potentially lead the execution of arbitrary PHP commands. This vulnerability only affects systems with register_globals enabled (CVE-2005-3390).

The updated packages have been patched to address this issue. Once the new packages have been installed, you will need to restart your Apache server using 'service httpd restart' in order for the new packages to take effect ('service httpd2-naat restart' for MNF2).

The remote host is affected by the vulnerability described in GLSA-200511-08 (PHP: Multiple vulnerabilities)

    Multiple vulnerabilities have been found and fixed in PHP:
    a possible $GLOBALS variable overwrite problem through file     upload handling, extract() and import_request_variables()     (CVE-2005-3390)     a local Denial of Service through the use of     the session.save_path option (CVE-2005-3319)     an issue with     trailing slashes in allowed basedirs (CVE-2005-3054)     an issue     with calling virtual() on Apache 2, allowing to bypass safe_mode and     open_basedir restrictions (CVE-2005-3392)     a problem when a     request was terminated due to memory_limit constraints during certain     parse_str() calls (CVE-2005-3389)     The curl and gd modules     allowed to bypass the safe mode open_basedir restrictions     (CVE-2005-3391)     a cross-site scripting (XSS) vulnerability in     phpinfo() (CVE-2005-3388)   Impact :

    Attackers could leverage these issues to exploit applications that     are assumed to be secure through the use of proper register_globals,     safe_mode or open_basedir parameters. Remote attackers could also     conduct cross-site scripting attacks if a page calling phpinfo() was     available. Finally, a local attacker could cause a local Denial of     Service using malicious session.save_path options.
  Workaround :

    There is no known workaround that would solve all issues at this     time.

ID	Name	Product	Family	Severity
20624	Ubuntu 4.10 / 5.04 : php4 vulnerability (USN-207-1)	Nessus	Ubuntu Local Security Checks	low
20445	Mandrake Linux Security Advisory : php (MDKSA-2005:213)	Nessus	Mandriva Local Security Checks	high
20195	GLSA-200511-08 : PHP: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	high

Detections

Analytics

CVE-2005-3054

high

Tenable Plugins

low

high

high