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Gentoo: GLSA-200502-30 Low: cmd5checkpw Local Password Exposure

cmd5checkpw contains a flaw allowing local users to access other users cmd5checkpw passwords.. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200502-30 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Low Title: cmd5checkpw: Local password leak vulnerability Date: February 25, 2005 Bugs: #78256 ID: 200502-30 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= cmd5checkpw contains a flaw allowing local users to access other userscmd5checkpw passwords. Background ========= cmd5checkpw is a checkpassword compatible authentication program that uses CRAM-MD5 authentication mode. Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-mail/cmd5checkpw = 0.22-r2 Description ========== Florian Westphal discovered that cmd5checkpw is installed setuid cmd5checkpw but does not drop privileges before calling execvp(), so the invoked program retains the cmd5checkpw euid. Impact ===== Local users that know at least one valid /etc/poppasswd user/password combination can read the /etc/poppasswd file. Workaround ========= There is no known workaround at this time. Resolution ========= All cmd5checkpw users should upgrade to the latest available version: # emerge --sync # emerge --ask --oneshot --verbose "> =net-mail/cmd5checkpw-0.22-r2" Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/200502-30 Concerns? ======== Security is a primary focus of Gentoo Linux and ensuringthe 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 security announcement GLSA 200602-45: cmd5checkpw local privilege vulnerability reveals user credentials, severity medium.. cmd5checkpw, local access, password security. . Severity: Low. LinuxSecurity.com Team

Feb 25, 2005 •Low Gentoo