Home    |    View Topics    |    Search    |    Contact Us    |   



Category:   Application (VoIP)  >   Asterisk Vendors:   Digium (Linux Support Services)
Asterisk Discloses Username Validity to Remote Users
SecurityTracker Alert ID:  1025734
SecurityTracker URL:
CVE Reference:   CVE-2011-2536   (Links to External Site)
Date:  Jun 29 2011
Impact:   Disclosure of system information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to,,
Description:   A vulnerability was reported in Asterisk. A remote user can determine valid SIP usernames.

The system may respond differently to remote SIP requests from an invalid SIP user than it responds to a valid SIP user (as configured on the target system). This may occur even when the alwaysauthreject option is set in the configuration.

A remote user can exploit this to determine valid SIP usernames.

Impact:   A remote user can determine valid SIP usernames.
Solution:   The vendor has issued a fix (Open Source,,; Business Edition C.3.7.3).

The vendor's advisory is available at:

Vendor URL: (Links to External Site)
Cause:   Access control error, State error
Underlying OS:  Linux (Any), UNIX (Any)

Message History:   None.

 Source Message Contents

[Original Message Not Available for Viewing]

Go to the Top of This SecurityTracker Archive Page

Home   |    View Topics   |    Search   |    Contact Us

This web site uses cookies for web analytics. Learn More

Copyright 2020, LLC