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[ GLSA 200701-13 ] Fetchmail: Denial of Service and password disclosure
From: Matthias Geerdsen <vorlon () gentoo org>
Date: Mon, 22 Jan 2007 21:47:16 +0100
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200701-13 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Fetchmail: Denial of Service and password disclosure Date: January 22, 2007 Bugs: #160463 ID: 200701-13 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Fetchmail has been found to have numerous vulnerabilities allowing for Denial of Service and password disclosure. Background ========== Fetchmail is a remote mail retrieval and forwarding utility. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-mail/fetchmail < 6.3.6 >= 6.3.6 Description =========== Neil Hoggarth has discovered that when delivering messages to a message delivery agent by means of the "mda" option, Fetchmail passes a NULL pointer to the ferror() and fflush() functions when refusing a message. Isaac Wilcox has discovered numerous means of plain-text password disclosure due to errors in secure connection establishment. Impact ====== An attacker could deliver a message via Fetchmail to a message delivery agent configured to refuse the message, and crash the Fetchmail process. SMTP and LMTP delivery modes are not affected by this vulnerability. An attacker could also perform a Man-in-the-Middle attack, and obtain plain-text authentication credentials of users connecting to a Fetchmail process. Workaround ========== There is no known workaround at this time. Resolution ========== All fetchmail users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-mail/fetchmail-6.3.6" References ========== [ 1 ] CVE-2006-5867 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5867 [ 2 ] CVE-2006-5974 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5974 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200701-13.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 () gentoo org or alternatively, you may file a bug at http://bugs.gentoo.org. License ======= Copyright 2007 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/2.5
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- [ GLSA 200701-13 ] Fetchmail: Denial of Service and password disclosure Matthias Geerdsen (Jan 22)