CVE-2007-4103
7.5
HIGH
CVSS 3.1
EPSS 2.6%
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.
How to fix CVE-2007-4103
To remediate CVE-2007-4103, upgrade the affected package to a fixed version below.
- —upgrade to 1:1.4.9~dfsg-1 or later
Is CVE-2007-4103 being exploited?
Low — EPSS is 2.6%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1:1.4.9~dfsg-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |