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TITLE:
jabberd XMPP Dialback Protection Bypass Vulnerability

SECUNIA ADVISORY ID:
SA50124

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/50124/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=50124

RELEASE DATE:
2012-08-23

DISCUSS ADVISORY:
http://secunia.com/advisories/50124/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
 * Last Update
 * Popularity
 * Comments
 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/50124/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
 * Secunia Analysis
 * Systems Affected
 * Approve Distribution
 * Remediation Status
 * Secunia CVSS Score
 * CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=50124

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
A vulnerability has been reported in jabberd, which can be exploited
by malicious people to bypass certain security restrictions.

The vulnerability is caused due to an error within the XMPP protocol
implementation, which does not properly verify the "Verify Response"
and "Authorization Response" messages. This can be exploited to spoof
a domain and bypass the Dialback protection.

The vulnerability is reported in versions 2.2.16 and prior.

SOLUTION:
Fixed in the GIT repository.

Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Philipp Hancke.

ORIGINAL ADVISORY:
http://xmpp.org/resources/security-notices/server-dialback/
http://www.openwall.com/lists/oss-security/2012/08/22/5

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

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About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

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Definitions: (Criticality, Where etc.)
http://secunia.com/advisories/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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