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Category:   Device (VoIP/Phone/FAX)  >   Asterisk Vendors:   Digium (Linux Support Services)
Asterisk Bug in Processing SIP INVITE Request with NULL Header Values Lets Remote Authenticated Users Deny Service
SecurityTracker Alert ID:  1021834
SecurityTracker URL:  http://securitytracker.com/id/1021834
CVE Reference:   CVE-2009-0871   (Links to External Site)
Updated:  Mar 14 2009
Original Entry Date:  Mar 10 2009
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 1.4 prior to 1.4.23.2, 1.6 prior to 1.6.0.6
Description:   A vulnerability was reported in Asterisk. A remote authenticated user can cause denial of service conditions.

When the system is configured with "pedantic=yes", a remote authenticated user can send a SIP INVITE request with specially crafted null header values to cause the target service to crash.

klaus3000 reported this vulnerability.

Impact:   A remote authenticated user can cause the target service to crash.
Solution:   The vendor has issued a fix (1.4.23.2, 1.6.0.6).

The vendor's advisory is available at:

http://downloads.digium.com/pub/security/AST-2009-002.html

Vendor URL:  downloads.digium.com/pub/security/AST-2009-002.html (Links to External Site)
Cause:   State error
Underlying OS:  Linux (Any), UNIX (Any)

Message History:   None.


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