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Gentoo: GLSA-200408-04 Normal: PuTTY Arbitrary Code Execution Threat

PuTTY contains a vulnerability allowing a SSH server to execute arbitrary code on the connecting client.. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200408-04 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: PuTTY: Pre-authentication arbitrary code execution Date: August 05, 2004 Bugs: #59383 ID: 200408-04 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= PuTTY contains a vulnerability allowing a SSH server to execute arbitrary code on the connecting client. Background ========= PuTTY is a free implementation of Telnet and SSH for Win32 and Unix platforms, along with an xterm terminal emulator. Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-misc/putty = 0.55 Description ========== PuTTY contains a vulnerability allowing a malicious server to execute arbitrary code on the connecting client before host key verification. Impact ===== When connecting to a server using the SSH2 protocol an attacker is able to execute arbitrary code with the permissions of the user running PuTTY by sending specially crafted packets to the client during the authentication process but before host key verification. Workaround ========= There is no known workaround at this time. All users are encouraged to upgrade to the latest available version of PuTTY. Resolution ========= All PuTTY users should upgrade to the latest version: # emerge sync # emerge -pv "> =net-misc/putty-0.55" # emerge ">=net-misc/putty-0.55" References ========= [ 1 ] PuTTY ChangeLog https://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/200408-04 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 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/1.0/ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) iD8DBQFBEiNpzKC5hMHO6rkRAqqfAKCAlxPnzBfJ396cnyBBeWsMi+sQKwCfRlP2 MVDuAX5vjBz5sMu1sCBvI6A=sog4 -----END PGP SIGNATURE----- . Critical hazard found in PuTTY SSH opens door for code execution. Users are urged to upgrade without delay.. PuTTY Exploit, Arbitrary Code Risk, Gentoo Advisory. . LinuxSecurity.com Team

Aug 05, 2004 Gentoo