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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200412-14">
<title>PHP: Multiple vulnerabilities</title>
<synopsis>
Several vulnerabilities were found and fixed in PHP, ranging from an
information leak and a safe_mode restriction bypass to a potential remote
execution of arbitrary code.
</synopsis>
<product type="ebuild">PHP</product>
<announced>December 19, 2004</announced>
<revised>May 22, 2006: 02</revised>
<bug>74547</bug>
<access>remote</access>
<affected>
<package name="dev-php/php" auto="yes" arch="*">
<unaffected range="ge">4.3.10</unaffected>
<vulnerable range="lt">4.3.10</vulnerable>
</package>
<package name="dev-php/mod_php" auto="yes" arch="*">
<unaffected range="ge">4.3.10</unaffected>
<vulnerable range="lt">4.3.10</vulnerable>
</package>
<package name="dev-php/php-cgi" auto="yes" arch="*">
<unaffected range="ge">4.3.10</unaffected>
<vulnerable range="lt">4.3.10</vulnerable>
</package>
</affected>
<background>
<p>
PHP is a general-purpose scripting language widely used to develop
web-based applications. It can run inside a web server using the
mod_php module or the CGI version of PHP, or can run stand-alone in a
CLI.
</p>
</background>
<description>
<p>
Stefan Esser and Marcus Boerger reported several different issues in
the unserialize() function, including serious exploitable bugs in the
way it handles negative references (CAN-2004-1019).
</p>
<p>
Stefan Esser also discovered that the pack() and unpack() functions are
subject to integer overflows that can lead to a heap buffer overflow
and a heap information leak. Finally, he found that the way
multithreaded PHP handles safe_mode_exec_dir restrictions can be
bypassed, and that various path truncation issues also allow to bypass
path and safe_mode restrictions.
</p>
<p>
Ilia Alshanetsky found a stack overflow issue in the exif_read_data()
function (CAN-2004-1065). Finally, Daniel Fabian found that addslashes
and magic_quotes_gpc do not properly escape null characters and that
magic_quotes_gpc contains a bug that could lead to one level directory
traversal.
</p>
</description>
<impact type="high">
<p>
These issues could be exploited by a remote attacker to retrieve web
server heap information, bypass safe_mode or path restrictions and
potentially execute arbitrary code with the rights of the web server
running a PHP application.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time.
</p>
</workaround>
<resolution>
<p>
All PHP users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-php/php-4.3.10"</code>
<p>
All mod_php users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-php/mod_php-4.3.10"</code>
<p>
All php-cgi users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-php/php-cgi-4.3.10"</code>
</resolution>
<references>
<uri link="http://www.php.net/release_4_3_10.php">PHP 4.3.10 Release Announcement</uri>
<uri link="http://www.hardened-php.net/advisories/012004.txt">Hardened-PHP Security Advisory</uri>
<uri link="http://www.securityfocus.com/archive/1/384663/2004-12-15/2004-12-21/0">SEC Consult Advisory</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1019">CAN-2004-1019</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1020">CAN-2004-1020</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-1063">CVE-2004-1063</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-1064">CVE-2004-1064</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-1065">CVE-2004-1065</uri>
</references>
<metadata tag="requester" timestamp="Thu, 16 Dec 2004 10:35:06 +0000">
jaervosz
</metadata>
<metadata tag="submitter" timestamp="Thu, 16 Dec 2004 11:09:01 +0000">
Koon
</metadata>
<metadata tag="bugReady" timestamp="Sat, 18 Dec 2004 14:09:43 +0000">
koon
</metadata>
</glsa>
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