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Gentoo: GLSA-200412-14 High: PHP Multiple Issues with Remote Risk

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. [More...]. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200412-14 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: High Title: PHP: Multiple vulnerabilities Date: December 19, 2004 Bugs: #74547 ID: 200412-14 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 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. Background ========= 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. Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-php/php < 4.3.10 > = 4.3.10 2 dev-php/mod_php < 4.3.10 > = 4.3.10 3 dev-php/php-cgi < 4.3.10 > = 4.3.10 ------------------------------------------------------------------- 3 affected packages on all of their supported architectures. ------------------------------------------------------------------- Description ========== 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). 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. 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. Impact ===== 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. Workaround ========= There is no known workaround at this time. Resolution ========= All PHP users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose "> =dev-php/php-4.3.10" All mod_php users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose "> =dev-php/mod_php-4.3.10" All php-cgi users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose "> =dev-php/php-cgi-4.3.10" References ========= [ 1 ] PHP 4.3.10 Release Announcement https://www.php.net/releases/4_3_10.php [ 2 ] Hardened-PHP Security Advisory [ 3 ] SEC Consult Advisory [ 4 ] CAN-2004-1019 https://www.cve.org/CVERecord?id=CAN-2004-1019 [ 5 ] CAN-2004-1065 https://www.cve.org/CVERecord?id=CAN-2004-1065 Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/200412-14 Concerns? ======== Security is a primary focus of Gentoo Linux and ensuring the confidentiality andsecurity of our users machines is of utmost importance to us. Any security concerns should be addressed to This email address is being protected from spambots. You need JavaScript enabled to view it. or alternatively, you may file a bug at https://bugs.gentoo.org/. License ====== Copyright 2004 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. https://creativecommons.org/licenses/by-sa/2.0/ . Critical security alert for Gentoo users concerning several PHP flaws that may enable remote code execution.. PHP vulnerabilities,Gentoo advisory,remote code execution,high severity. . LinuxSecurity.com Team

Dec 19, 2004 Gentoo