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Gentoo Linux Security Advisory GLSA 200410-04 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: PHP: Memory disclosure and arbitrary location file upload |
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Date: October 06, 2004 |
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Bugs: #64223 |
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ID: 200410-04 |
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Synopsis |
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======== |
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|
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Two bugs in PHP may allow the disclosure of portions of memory and |
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allow remote attackers to upload files to arbitrary locations. |
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|
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Background |
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========== |
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|
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PHP is a general-purpose scripting language widely used to develop |
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web-based applications. It can run inside a web server using the |
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mod_php module or the CGI version of PHP, or can run stand-alone in a |
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CLI. |
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|
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 dev-php/php < 4.3.9 >= 4.3.9 |
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2 dev-php/mod_php < 4.3.9 >= 4.3.9 |
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3 dev-php/php-cgi < 4.3.9 >= 4.3.9 |
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------------------------------------------------------------------- |
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3 affected packages on all of their supported architectures. |
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------------------------------------------------------------------- |
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|
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Description |
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=========== |
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|
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Stefano Di Paola discovered two bugs in PHP. The first is a parse error |
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in php_variables.c that could allow a remote attacker to view the |
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contents of the target machine's memory. Additionally, an array |
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processing error in the SAPI_POST_HANDLER_FUNC() function inside |
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rfc1867.c could lead to the $_FILES array being overwritten. |
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|
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Impact |
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====== |
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|
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A remote attacker could exploit the first vulnerability to view memory |
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contents. On a server with a script that provides file uploads, an |
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attacker could exploit the second vulnerability to upload files to an |
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arbitrary location. On systems where the HTTP server is allowed to |
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write in a HTTP-accessible location, this could lead to remote |
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execution of arbitrary commands with the rights of the HTTP server. |
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|
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Workaround |
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========== |
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|
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There is no known workaround at this time. |
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Resolution |
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========== |
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|
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All PHP, mod_php and php-cgi users should upgrade to the latest stable |
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version: |
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# emerge sync |
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# emerge -pv ">=dev-php/php-4.3.9" |
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# emerge ">=dev-php/php-4.3.9" |
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|
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# emerge -pv ">=dev-php/mod_php-4.3.9" |
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# emerge ">=dev-php/mod_php-4.3.9" |
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|
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# emerge -pv ">=dev-php/php-cgi-4.3.9" |
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# emerge ">=dev-php/php-cgi-4.3.9" |
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|
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References |
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========== |
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|
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[ 1 ] Secunia Advisory |
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http://secunia.com/advisories/12560/ |
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[ 2 ] BugTraq post regarding the php_variables.c issue |
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http://www.securityfocus.com/archive/1/375294 |
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[ 3 ] BugTraq post regarding the rfc1867.c issue |
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http://www.securityfocus.com/archive/1/375370 |
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|
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Availability |
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============ |
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|
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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http://security.gentoo.org/glsa/glsa-200410-04.xml |
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Concerns? |
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========= |
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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http://bugs.gentoo.org. |
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License |
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======= |
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|
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Copyright 2004 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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|
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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|
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http://creativecommons.org/licenses/by-sa/1.0 |
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