|
Asterisk Multiple Vulnerabilities
|
|
Secunia Advisory:
|
SA29426
|
|
|
Release Date:
|
2008-03-19
|
|
Last Update:
|
2008-03-20
|
|
Popularity:
|
5,704 views
|
|
|
Critical:
|
Highly critical
|
|
Impact:
|
Security Bypass
DoS
System access
|
|
Where:
|
From remote
|
|
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:
Some vulnerabilities have been reported in Asterisk, which can be exploited by malicious people to bypass certain security restrictions, cause a DoS (Denial of Service), and potentially compromise a vulnerable system.
1) An error within the "ast_rtp_unset_m_type()" function in main/rtp.c when handling of RTP codec payloads can be exploited to write a 0 into certain memory locations by sending a specially crafted SIP packet with SDP containing a payload number greater than 256.
2) A boundary error within the "process_sdp()" function in channels/chan_sip.c when handling of RTP codec payloads can be exploited to cause a stack-based buffer overflow by sending more than 32 RTP payloads.
3) An error within the SIP channel driver when determining if authentication is required can be exploited to perform unauthenticated calls by sending specially crafted From headers to the driver.
Note: A format string error within the "ast_verbose()" logging API call has also been reported by Steve Davies and Brandon Kruse. This can be exploited to crash the application by providing input containing format specifiers, which is later used in the affected API call. However, this only affects Asterisk 1.6.x versions prior to 1.6.0-beta6.
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.
|
