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[ GLSA 200403-06 ] Multiple remote buffer overflow vulnerabilities in Courier
From: Kurt Lieber <klieber () gentoo org>
Date: Mon, 29 Mar 2004 03:16:38 -0500
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200403-06 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Multiple remote buffer overflow vulnerabilities in Courier Date: March 26, 2004 Bugs: #45584 ID: 200403-06 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Remote buffer overflow vulnerabilites have been found in Courier-IMAP and Courier MTA. These exploits may allow the execution of abritrary code, allowing unauthorized access to a vulnerable system. Background ========== Courier MTA is a multiprotocol mail server suite that provides webmail, mailing lists, IMAP, and POP3 services. Courier-IMAP is a standalone server that gives IMAP access to local mailboxes. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- net-mail/courier-imap < 3.0.0 >= 3.0.0 net-mail/courier < 0.45 >= 0.45 Description =========== The vulnerabilities have been found in the 'SHIFT_JIS' converter in 'shiftjis.c' and 'ISO2022JP' converter in 'so2022jp.c'. An attacker may supply Unicode characters that exceed BMP (Basic Multilingual Plane) range, causing an overflow. Impact ====== An attacker without privileges may exploit this vulnerability remotely, allowing arbitrary code to be executed in order to gain unauthorized access. Workaround ========== While a workaround is not currently known for this issue, all users are advised to upgrade to the latest version of the affected packages. Resolution ========== All users should upgrade to the current version of the affected packages: # emerge sync # emerge -pv ">=net-mail/courier-imap-3.0.0" # emerge ">=net-mail/courier-imap-3.0.0" # ** Or; depending on your installation... ** # emerge -pv ">=net-mail/courier-0.45" # emerge ">=net-mail/courier-0.45" References ========== [ 1 ] http://www.securityfocus.com/bid/9845 [ 2 ] http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0224 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 () gentoo org or alternatively, you may file a bug at http://bugs.gentoo.org.
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- [ GLSA 200403-06 ] Multiple remote buffer overflow vulnerabilities in Courier Kurt Lieber (Mar 29)