Secunia Logo  


Secunia PSI WorldMap
 
Asterisk Two Denial of Service Vulnerabilities
Secunia Advisory: SA31178
Release Date: 2008-07-23
Popularity: 3,195 views

Critical:
Less critical
Impact: DoS
Where: From local network
Solution Status: Vendor Patch

Software:Asterisk 1.x
Asterisk Appliance Developer Kit 0.x
Asterisk Business Edition 2.x

Secunia CVSS-2 Score: Available in Secunia business solutions

Subscribe: Instant alerts on relevant vulnerabilities


Advisory Content (Page 1 of 3)[ 1 ] [ 2 ] [ 3 ]

Description:
Two vulnerabilities have been reported in Asterisk, which can be exploited by malicious people to cause a DoS (Denial of Service) or to conduct DoS attacks.

1) An error in the processing of IAX2 "POKE" requests can be exploited to consume all IAX2 call numbers via multiple "POKE" requests lacking an "ACK" packet sent in response to a "PONG" packet.

2) The firmware download protocol does not require a handshake, which can be exploited to send packets having 1040 bytes to arbitrary servers via a 40-byte packet with a spoofed source address.

The vulnerabilities are reported in the following products and versions:
* Asterisk Open Source 1.0.x (all versions)
* Asterisk Open Source 1.2.x (all versions prior to 1.2.30)
* Asterisk Open Source 1.4.x (all versions prior to 1.4.21.2)
* Asterisk Business Edition A.x.x (all versions)
* Asterisk Business Edition B.x.x.x (all versions prior to B.2.5.4)
* Asterisk Business Edition C.x.x.x (all versions prior to C.1.10.3)
* AsteriskNOW pre-release (all versions)
* Asterisk Appliance Developer Kit 0.x.x (all versions)
* s800i (Asterisk Appliance) 1.0.x (all versions prior to 1.2.0.1)

Change Page:
[ 1 ] [ 2 ] [ 3 ]



Track this Secunia Advisory
Customers of the Secunia Vulnerability Intelligence solutions will automatically receive updates when new information regarding this advisory is released.

Read more about our Vulnerability Intelligence solutions and what they can do for you and your company.

About this Secunia Advisory
Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.

Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
  
Latest Advisories

Send Feedback to Secunia
If you have new information regarding this Secunia advisory or a product in our database, please send it to us using either our web form or email us at vuln@secunia.com.

Ideas, suggestions, and other feedback are most welcome.

Most Popular - 3 Hours

1. Microsoft DirectShow Streaming Video ActiveX Control Buffer Overflow // 126 views
2. Apple Safari Two WebKit Component Vulnerabilities // 69 views
3. Internet Explorer Charset Inheritance Cross-Site Scripting Vulnerability // 63 views
4. Adobe Flash Player Multiple Vulnerabilities // 54 views
5. Sun Java JDK / JRE Multiple Vulnerabilities // 36 views
6. IBM AIX "syscall" Buffer Overflow Vulnerability // 31 views
7. MySQL "dispatch_command()" Denial of Service Vulnerability // 25 views
8. Adobe Reader/Acrobat Multiple Vulnerabilities // 24 views
9. NukeSentinel "admin" Cookie SQL Injections // 23 views
10. ArticleBeach Script "page" File Inclusion Vulnerability // 23 views