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If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important. If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.
Vulnerability Assessment Details
PHP: Memory disclosure and arbitrary location file upload
Detailed Explanation for this Vulnerability Assessment
The remote host is affected by the vulnerability described in GLSA-200410-04
(PHP: Memory disclosure and arbitrary location file upload)
Stefano Di Paola discovered two bugs in PHP. The first is a parse error in
php_variables.c that could permit a remote attacker to view the contents of
the target machine's memory. Additionally, an array processing error in the
SAPI_POST_HANDLER_FUNC() function inside rfc1867.c could lead to the
$_FILES array being overwritten.
A remote attacker could exploit the first vulnerability to view memory
contents. On a server with a script that provides file uploads, a possible hacker
could exploit the second vulnerability to upload files to an arbitrary
location. On systems where the HTTP server is permited to write in a
HTTP-accessible location, this could lead to remote execution of arbitrary
commands with the rights of the HTTP server.
There is no known workaround at this time.
All PHP, mod_php and php-cgi users should upgrade to the latest stable
# emerge sync
# emerge -pv ">=dev-php/php-4.3.9"
# emerge ">=dev-php/php-4.3.9"
# emerge -pv ">=dev-php/mod_php-4.3.9"
# emerge ">=dev-php/mod_php-4.3.9"
# emerge -pv ">=dev-php/php-cgi-4.3.9"
# emerge ">=dev-php/php-cgi-4.3.9"
Network Security Threat Level: Medium
Networks Security ID:
Vulnerability Assessment Copyright: (C) 2005 Michel Arboi
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