Secunia Logo  


Secunia PSI WorldMap
 
Asterisk T.38 SDP Buffer Overflows and Management Interface Denial of Service
Secunia Advisory: SA24977
Release Date: 2007-04-25
Last Update: 2007-04-30
Popularity: 11,833 views

Critical:
Highly critical
Impact: DoS
System access
Where: From remote
Solution Status: Vendor Patch

Software:Asterisk 1.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:
Some vulnerabilities have been reported in Asterisk, which potentially can be exploited by malicious people to cause a DoS (Denial of Service) or compromise a vulnerable system.

1) Two boundary errors exist in the T.38 SDP parser of the SIP channel when processing the "T38FaxRateManagement" or "T38FaxUdpEC" SDP parameters within the "process_sdp()" function in chan_sip.c. This can be exploited to cause stack-based buffer overflows by sending a specially crafted SIP packet with overly long SDP parameters.

Successful exploitation requires that the "t38_udptl" configuration option is set to "yes".

The vulnerabilities is reported in the 1.4.x branch prior to version 1.4.3.

2) A NULL pointer dereference error exists within the authentication mechanism of the Asterisk Remote Management Interface, which can be exploited to crash the service.

Successful exploitation requires that the Management Interface is enabled and a user without a password is configured in the manager.conf file.

The vulnerability is reported in the 1.2.x branch before 1.2.18 and the 1.4.x branch before 1.4.3.

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

Today
New advisories: 6
New vulnerabilities: 23
Updated advisories: 66

Not // 165 views
Debian update for pidgin
Less // 188 views
Debian update for linux-2.6
Less // 159 views
Debian update for drupal6
Highly // 181 views
Debian update for nspr

6th Nov, 2009
New advisories: 17
New vulnerabilities: 65
Updated advisories: 21

Less // 424 views
Debian update for linux-2.6.24
Less // 415 views
Debian update for linux-2.6
Moderately // 372 views
Gentoo update for horde

Solutions | More...  


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. Sun Java JDK / JRE Multiple Vulnerabilities // 88 views
2. Adobe Flash Player Multiple Vulnerabilities // 56 views
3. Google Chrome Two Vulnerabilities // 42 views
4. OpenSSL TLS Session Renegotiation Plaintext Injection Vulnerability // 41 views
5. Internet Explorer Charset Inheritance Cross-Site Scripting Vulnerability // 41 views
6. Linux Kernel 2.4 Multiple Vulnerabilities // 41 views
7. Adobe Reader/Acrobat Multiple Vulnerabilities // 33 views
8. Sun Solaris mod_perl Two Vulnerabilities // 33 views
9. Mozilla Firefox Multiple Vulnerabilities // 29 views
10. Debian update for linux-2.6 // 27 views