High severity · published Jul 31, 2007
CVE-2007-4103
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…
7.5
CVSS
5.9%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)5.9% · higher than 93% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AS
Asterisk · Digium
1.2.20 before 1.2.23; 1.4.0 before 1.4.9 · source: NVD
AA
Asterisk Appliance Developer Kit · Digium
before 0.6.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2007-4103
CVE.org
https://www.cve.org/CVERecord?id=CVE-2007-4103
Issue Tracking
http://bugs.gentoo.org/show_bug.cgi?id=185713
Broken Link
http://ftp.digium.com/pub/asa/ASA-2007-018.pdf
Broken Link
http://osvdb.org/38197
Broken Link
http://secunia.com/advisories/26274
Broken Link
http://secunia.com/advisories/29051
Third Party Advisory
http://security.gentoo.org/glsa/glsa-200802-11.xml
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