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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: Multiple security vulnerabilities
Detailed Explanation for this Vulnerability Assessment
The remote host is affected by the vulnerability described in GLSA-200407-13
(PHP: Multiple security vulnerabilities)
Several security vulnerabilities were found and fixed in version 4.3.8 of
PHP. The strip_tags() function, used to sanitize user input, could in
certain cases permit tags containing \0 characters (CVE-2004-0595). When
memory_limit is used, PHP might unsafely interrupt other functions
(CVE-2004-0594). The ftok and itpc functions were missing safe_mode checks.
It was possible to bypass open_basedir restrictions using MySQL's LOAD DATA
LOCAL function. Furthermore, the IMAP extension was incorrectly allocating
memory and alloca() calls were replaced with emalloc() for better stack
Successfully exploited, the memory_limit problem could permit remote
excution of arbitrary code. By exploiting the strip_tags vulnerability, it
is possible to pass HTML code that would be considered as valid tags by the
Microsoft Internet Explorer and Safari browsers. Using ftok, itpc or
MySQL's LOAD DATA LOCAL, it is possible to bypass PHP configuration
There is no known workaround that would solve all these problems. All users
are encouraged to upgrade to the latest available versions.
All PHP, mod_php and php-cgi users should upgrade to the latest stable
# emerge sync
# emerge -pv ">=dev-php/php-4.3.8"
# emerge ">=dev-php/php-4.3.8"
# emerge -pv ">=dev-php/mod_php-4.3.8"
# emerge ">=dev-php/mod_php-4.3.8"
# emerge -pv ">=dev-php/php-cgi-4.3.8"
# emerge ">=dev-php/php-cgi-4.3.8"
Network Security Threat Level: High
Networks Security ID:
Vulnerability Assessment Copyright: (C) 2005 Michel Arboi
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