Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Digium | Asterisk | >= 1.2.20, < 1.2.23 |
| Digium | Asterisk Appliance Developer Kit | < 0.6.0 |
Related Weaknesses (CWE)
References
- http://bugs.gentoo.org/show_bug.cgi?id=185713Issue TrackingPatch
- http://ftp.digium.com/pub/asa/ASA-2007-018.pdfBroken LinkPatch
- http://osvdb.org/38197Broken Link
- http://secunia.com/advisories/26274Broken LinkPatchVendor Advisory
- http://secunia.com/advisories/29051Broken Link
- http://security.gentoo.org/glsa/glsa-200802-11.xmlThird Party Advisory
- http://securityreason.com/securityalert/2960Broken Link
- http://www.securityfocus.com/archive/1/475069/100/0/threadedBroken LinkThird Party AdvisoryVDB Entry
- http://www.securityfocus.com/bid/24950Broken LinkThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id?1018472Broken LinkThird Party AdvisoryVDB Entry
- http://www.vupen.com/english/advisories/2007/2701Broken Link
- http://bugs.gentoo.org/show_bug.cgi?id=185713Issue TrackingPatch
- http://ftp.digium.com/pub/asa/ASA-2007-018.pdfBroken LinkPatch
- http://osvdb.org/38197Broken Link
- http://secunia.com/advisories/26274Broken LinkPatchVendor Advisory
FAQ
What is CVE-2007-4103?
CVE-2007-4103 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 ...
How severe is CVE-2007-4103?
CVE-2007-4103 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2007-4103?
Check the references section above for vendor advisories and patch information. Affected products include: Digium Asterisk, Digium Asterisk Appliance Developer Kit.