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Gentoo: GLSA 200509-17 High: Webmin and Usermin Remote Access Risk

If Webmin or Usermin is configured to use full PAM conversations, it is vulnerable to the remote execution of arbitrary code with root privileges. [More...]. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200509-17 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: High Title: Webmin, Usermin: Remote code execution through PAM authentication Date: September 24, 2005 Bugs: #106705 ID: 200509-17 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= If Webmin or Usermin is configured to use full PAM conversations, it is vulnerable to the remote execution of arbitrary code with root privileges. Background ========= Webmin and Usermin are web-based system administration consoles. Webmin allows an administrator to easily configure servers and other features. Usermin allows users to configure their own accounts, execute commands, and read e-mails. Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-admin/webmin < 1.230 > = 1.230 2 app-admin/usermin < 1.160 > = 1.160 ------------------------------------------------------------------- 2 affected packages on all of their supported architectures. ------------------------------------------------------------------- Description ========== Keigo Yamazaki discovered that the miniserv.pl webserver, used in both Webmin and Usermin, does not properly validate authentication credentials before sending them to the PAM (Pluggable Authentication Modules)authentication process. The default configuration shipped with Gentoo does not enable the "full PAM conversations" option and is therefore unaffected by this flaw. Impact ===== A remote attacker could bypass the authentication process and run any command as the root user on the target server. Workaround ========= Do not enable "full PAM conversations" in the Authentication options of Webmin and Usermin. Resolution ========= All Webmin users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose "> =app-admin/webmin-1.230" All Usermin users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose "> =app-admin/usermin-1.160" References ========= [ 1 ] CAN-2005-3042 https://www.cve.org/CVERecord?id=CVE-CAN-2005-3042 [ 2 ] Original Advisory Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/200509-17 Concerns? ======== Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security 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 2005 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/ . Gentoo GLSA 202310-03 outlines a critical vulnerability in Webmin and Usermin that exposes systems to potential remote code execution stemming from incorrect PAM settings.. Remote Code Execution,Webmin,Usermin,PAM Authentication,Gentoo Security. . LinuxSecurity.com Team

Sep 24, 2005 Gentoo