Full Disclosure mailing list archives
[ GLSA 200905-01 ] Asterisk: Multiple vulnerabilities
From: Robert Buchholz <rbu () gentoo org>
Date: Sat, 2 May 2009 19:54:49 +0200
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200905-01 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Asterisk: Multiple vulnerabilities Date: May 02, 2009 Bugs: #218966, #224835, #232696, #232698, #237476, #250748, #254304 ID: 200905-01 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Multiple vulnerabilities have been found in Asterisk allowing for Denial of Service and username disclosure. Background ========== Asterisk is an open source telephony engine and toolkit. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-misc/asterisk < 1.2.32 >= 1.2.32 Description =========== Multiple vulnerabilities have been discovered in the IAX2 channel driver when performing the 3-way handshake (CVE-2008-1897), when handling a large number of POKE requests (CVE-2008-3263), when handling authentication attempts (CVE-2008-5558) and when handling firmware download (FWDOWNL) requests (CVE-2008-3264). Asterisk does also not correctly handle SIP INVITE messages that lack a "From" header (CVE-2008-2119), and responds differently to a failed login attempt depending on whether the user account exists (CVE-2008-3903, CVE-2009-0041). Impact ====== Remote unauthenticated attackers could send specially crafted data to Asterisk, possibly resulting in a Denial of Service via a daemon crash, call-number exhaustion, CPU or traffic consumption. Remote unauthenticated attackers could furthermore enumerate valid usernames to facilitate brute force login attempts. Workaround ========== There is no known workaround at this time. Resolution ========== All Asterisk users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-misc/asterisk-1.2.32" References ========== [ 1 ] CVE-2008-1897 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1897 [ 2 ] CVE-2008-2119 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2119 [ 3 ] CVE-2008-3263 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3263 [ 4 ] CVE-2008-3264 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3264 [ 5 ] CVE-2008-3903 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3903 [ 6 ] CVE-2008-5558 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5558 [ 7 ] CVE-2009-0041 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0041 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200905-01.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 2009 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
Attachment:
signature.asc
Description: This is a digitally signed message part.
_______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
Current thread:
- [ GLSA 200905-01 ] Asterisk: Multiple vulnerabilities Robert Buchholz (May 02)