CVE-2007-4103 json
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…
published 2007-07-31 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-4087
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 5.9%
- EPSS 5.9% chance of exploitation in 30 days, percentile 93%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- digium asterisk 1.2.23, 1.4.9
- digium asterisk_appliance_developer_kit 0.6.0
- asterisk Debian 14 1:1.4.9~dfsg-1
debian advisories DEBIAN-CVE-2007-4103
Exploit prediction
5.94% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 7.8 | AV:N/AC:L/Au:N/C:N/I:N/A:C |
Classification
- Weakness
-
- CWE-772 Missing Release of Resource after Effective Lifetime
References
-
bugs.gentoo.org
/show_bug.cgi?id=185713
issue-tracking, patch
-
ftp.digium.com
/pub/asa/ASA-2007-018.pdf
broken-link, patch
-
secunia.com
/advisories/26274
third-party-advisory, broken-link, patch, vendor-advisory
-
security.gentoo.org
/glsa/glsa-200802-11.xml
vendor-advisory, third-party-advisory
-
securityfocus.com
/bid/24950
vdb-entry, broken-link, third-party-advisory
-
secunia.com
/advisories/29051
third-party-advisory, broken-link
-
securitytracker.com
/id?1018472
vdb-entry, broken-link, third-party-advisory
-
vupen.com
/english/advisories/2007/2701
vdb-entry, broken-link
-
securityfocus.com
/archive/1/475069/100/0/threaded
mailing-list, broken-link, third-party-advisory, vdb-entry
-
securityreason.com
/securityalert/2960
third-party-advisory, broken-link
-
osvdb.org
/38197
vdb-entry, broken-link
Sources
- CVE List CVE-2007-4103
- NVD CVE-2007-4103
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.