CVE-2007-4103

Description

The IAX2 channel driver (chan_iax2) in Asterisk Open 1.2.x before 1.2.23, 1.4.x before 1.4.9, and Asterisk Appliance Developer Kit before 0.6.0, when configured to allow unauthenticated calls, allows remote attackers to cause a denial of service (resource exhaustion) via a flood of calls that do not complete a 3-way handshake, which causes an ast_channel to be allocated but not released.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 2.81% Top 15%
Vendor Advisory gentoo.org Vendor Advisory secunia.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.securityfocus.com/bid/24950 vdb entry third party advisory broken link
http://security.gentoo.org/glsa/glsa-200802-11.xml third party advisory vendor advisory
http://secunia.com/advisories/29051 third party advisory broken link
http://bugs.gentoo.org/show_bug.cgi?id=185713 issue tracking patch
http://www.securitytracker.com/id?1018472 vdb entry third party advisory broken link
http://www.vupen.com/english/advisories/2007/2701 vdb entry broken link
http://www.securityfocus.com/archive/1/475069/100/0/threaded mailing list vdb entry third party advisory broken link
http://securityreason.com/securityalert/2960 third party advisory broken link
http://ftp.digium.com/pub/asa/ASA-2007-018.pdf patch broken link
http://osvdb.org/38197 vdb entry broken link
http://secunia.com/advisories/26274 broken link third party advisory patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2007-4103?
CVE-2007-4103 has been scored as a high severity vulnerability.
How to fix CVE-2007-4103?
To fix CVE-2007-4103, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2007-4103 being actively exploited in the wild?
It is possible that CVE-2007-4103 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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