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Message-ID: <424BDEFA.8080403@gentoo.org> Date: Sun Jul 17 15:06:16 2005 From: koon at gentoo.org (Thierry Carrez) Subject: [gentoo-announce] [ GLSA 200503-36 ] netkit-telnetd: Buffer overflow - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200503-36 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: netkit-telnetd: Buffer overflow Date: March 31, 2005 Bugs: #87211 ID: 200503-36 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== The netkit-telnetd telnet client is vulnerable to a buffer overflow, which could allow a malicious telnet server operator to execute arbitrary code. Background ========== netkit-telnetd provides standard Linux telnet client and server. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-misc/netkit-telnetd < 0.17-r6 >= 0.17-r6 Description =========== A buffer overflow has been identified in the slc_add_reply() function of netkit-telnetd client, where a large number of SLC commands can overflow a fixed size buffer. Impact ====== Successful explotation would require a vulnerable user to connect to an attacker-controlled host using telnet, potentially executing arbitrary code with the permissions of the telnet user. Workaround ========== There is no known workaround at this time. Resolution ========== All netkit-telnetd users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-misc/netkit-telnetd-0.17-r6" References ========== [ 1 ] CAN-2005-0469 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0469 [ 2 ] iDEFENSE Advisory 03-28-05 http://www.idefense.com/application/poi/display?id=220&type=vulnerabilities Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200503-36.xml 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 security@...too.org or alternatively, you may file a bug at http://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. http://creativecommons.org/licenses/by-sa/2.0 -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 189 bytes Desc: OpenPGP digital signature Url : http://lists.grok.org.uk/pipermail/full-disclosure/attachments/20050717/6dee2e4d/signature.bin
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