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SUSE WebYaST remotely accessible hosts list vulnerability

Vulnerability Note VU#806908

Original Release Date: 2013-01-25 | Last Revised: 2013-01-25

Overview

The WebYaST hosts list is remotely accessible by unauthenticated attackers. An attacker may be able to add a malicious host to the list and perform a man-in-the-middle attack against WebYaST.

Description

The SUSE security advisory states:

The hosts list used by WebYaST for connecting to it's back end part was modifiable allowing to point to a malicious website which then could access all values sent by WebYaST. The /host configuration path was removed to fix this issue.

Additional details may be found in advisory SUSE-SU-2013:0053-1.

Impact

A remote unauthenticated attacker may be able to add a malicious server to the WebYaST hosts file and then be able to perform a man-in-the-middle attack against WebYaST.

Solution

Apply an Update

WebYaST patch slewyst12-webyast-base-ui-7236 has been released to address this vulnerability.

Restrict Access

Firewall rules to block untrusted networks and hosts from accessing TCP port 4984 should be implemented.

Vendor Information

806908
 
Affected   Unknown   Unaffected

Novell, Inc.

Notified:  November 28, 2012 Updated:  January 25, 2013

Status

  Affected

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

SUSE Linux

Updated:  January 25, 2013

Status

  Affected

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.


CVSS Metrics

Group Score Vector
Base 6.4 AV:N/AC:L/Au:N/C:P/I:P/A:N
Temporal 5.0 E:POC/RL:OF/RC:C
Environmental 4.9 CDP:LM/TD:M/CR:M/IR:M/AR:L

References

Acknowledgements

Thanks to Tenable Network Security for reporting this vulnerability.

This document was written by Jared Allar.

Other Information

CVE IDs: CVE-2012-0435
Date Public: 2013-01-23
Date First Published: 2013-01-25
Date Last Updated: 2013-01-25 21:28 UTC
Document Revision: 13

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