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Vulnerability Alert

XMPP Server jabberd Daemon Spoofed Authentication Bypass Vulnerability

 
Threat Type:CWE-287: Authentication Issues
IntelliShield ID:26733
Version:5
First Published:2012 August 27 18:23 GMT
Last Published:2013 March 18 21:51 GMT
Port: Not available
CVE:CVE-2012-3525 , CVE-2012-4672
BugTraq ID:55294
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Mild Damage
CVSS Base:4.3 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:3.2
 
Version Summary:Apple has released an additional security advisory and updated software to address the XMPP server jabberd daemon spoofed authentication bypass vulnerability.
 
 
Description
XMPP Server contains a vulnerability that could allow an unauthenticated, remote attacker to conduct spoofing attacks against a targeted server.

The vulnerability exists because the affected server process fails to validate identification information from arbitrary domain servers. An unauthenticated, remote attacker could exploit the vulnerability by transmitting spoofed authentication information through a verify response request to the affected server process, which could bypass security restrictions imposed by the server. This could allow the attacker to validate a malicious domain and initiate malicious communication to the targeted system.

XMPP.org has confirmed the vulnerability and released software updates.
 
Warning Indicators
XMPP Server jabberd daemon versions 2.2.16 and prior are vulnerable.
 
IntelliShield Analysis
To exploit the vulnerability the attacker must transmit spoofed verify response requests to the targeted system. To transmit the requests, the attacker must have access to the trusted network. This access requirement could limit likelihood of a successful exploit.

The Extensible Messaging and Presence Protocol (XMPP) protocol supported by the affected server provides signaling for VoIP, video, file transfer, and messaging services that are used by various instant messaging and chat programs on social networking sites. Those services could also be vulnerable to an exploit.
 
Vendor Announcements
XMPP.org has released a security advisory at the following link: server-dialback

Apple has released security advisories at the following links: HT5533 and HT5672

FreeBSD has released a VuXML document at the following link: jabberd -- domain spoofing in server dialback protocol

Red Hat has released security advisories at the following links: RHSA-2012-1539, and RHSA-2012-1538.

 
Impact
An unauthenticated, remote attacker could exploit the vulnerability to transmit spoofed validation requests to the targeted server. This could allow the attacker to validate a malicious domain that may initiate communication with the targeted server.
 
Technical Information
The vulnerability exists in the Server Dialback Protocol implementation in XMPP Server. The servers use the protocol dialback key to verify the identity of peer domains based on DNS. Due to this vulnerability, the server fails to verify the key with an authoritative DNS entry for the server, and it could validate authorization requests from invalid domain servers.

An unauthenticated, remote attacker could exploit the vulnerability by transmitting spoofed dialback responses to the targeted system. A successful attack could allow the attacker to bypass security restrictions imposed by the protocol and gain unauthorized access to the targeted system by spoofing authentication to the targeted system.
 
Safeguards
Administrators are advised to apply the appropriate updates.

Administrators are advised to run both firewall and antivirus applications to minimize the potential of inbound and outbound threats.

Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.
 
Patches/Software
XMPP Server users are advised to upgrade the server code as determined by the security advisory at the following link: server-dialback

Apple has released updated software at the following link: Mac OS X Server version 2.1.1

Apple users are advised to acquire updates via software update preferences.

FreeBSD provides ports collection updates at the following link: Ports Collection Index

Red Hat has released updated software for registered subscribers at the following link: Red Hat Network.

Red Hat packages can be updated on Red Hat Enterprise Linux versions 5 and later using the yum tool.

 
Alert History
 

Version 4, December 5, 2012, 7:49 AM: Red Hat has released security advisories and updated packages to address the XMPP server jabberd daemon spoofed authentication bypass vulnerability.

Version 3, October 4, 2012, 10:23 AM: Apple has released a security advisory and updated software to address the XMPP Server jabberd daemon spoofed authentication bypass vulnerability.

Version 2, August 30, 2012, 5:13 PM: Cisco has the updated this alert to add additional information to address XMPP Server jabberd daemon spoofed authentication bypass vulnerability.

Version 1, August 27, 2012, 2:23 PM: XMPP Server contains a vulnerability that could allow an unauthenticated, remote attacker to conduct spoofing attacks against a targeted server. Updates are available.



Product Sets
 
The security vulnerability applies to the following combinations of products.

Primary Products:
Jabber Software FoundationJabber Server (JabberD) 2.2 .9, .10, .11, .12, .13, .14, .15, .16, Base

Associated Products:
AppleMac OS X 10.6.8 Base | 10.8 Base, .1 | 10.8.1 Base
AppleMac OS X Server 2.0 Base | 2.1 Base | 10.7 Base | 10.7.1 Base | 10.7.2 Base | 10.7.3 Base | 10.7.4 Base | 10.7.5 Base | 10.8.0 Base | 10.8.1 Base
FreeBSD ProjectFreeBSD 6.3 Base | 6.4 Base | 7.0 Base | 7.1 Base | 7.2 Base | 7.3 Base | 7.4 Base | 8.0 Base | 8.1 Base | 8.2 Base | 8.3 Base | 9.0 Base
Red Hat, Inc.Red Hat Network Proxy 5.5 for RHEL 5 s390x, x86_64 | 5.5 for RHEL 6 s390x, x86_64
Red Hat, Inc.Red Hat Network Satellite 5.5 for RHEL 5 s390x, x86_64 | 5.5 for RHEL 6 s390x, x86_64




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The urgency and severity ratings of this alert are not tailored to individual users; users may value alerts differently based upon their network configurations and circumstances. THE ALERT, AND INFORMATION CONTAINED THEREIN, ARE PROVIDED ON AN "AS IS" BASIS AND DO NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE ALERT, AND INFORMATION CONTAINED THEREIN, OR MATERIALS LINKED FROM THE ALERT, IS AT YOUR OWN RISK. INFORMATION IN THIS ALERT AND ANY RELATED COMMUNICATIONS IS BASED ON OUR KNOWLEDGE AT THE TIME OF PUBLICATION AND IS SUBJECT TO CHANGE WITHOUT NOTICE. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE ALERTS AT ANY TIME.
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