The IAX2 channel driver (chan_iax2) in Asterisk 1.2 before revision 72630 and 1.4 before revision 65679, when configured to allow unauthenticated calls, sends "early audio" to an unverified source IP address of a NEW message, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed NEW message
Published Apr 23, 2008
7.1
HIGHCVSS 2.0
EPSS 1.40%
Description
The IAX2 channel driver (chan_iax2) in Asterisk 1.2 before revision 72630 and 1.4 before revision 65679, when configured to allow unauthenticated calls, sends "early audio" to an unverified source IP address of a NEW message, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed NEW message.
Affected products
No data.
- n/a
- ≤ b2.5.1
- ≤ c1.8.0
- a
- b.1.3.2
- b.1.3.3
- b.2.2.0
- b.2.2.1
- b.2.3.1
- b.2.3.2
- b.2.3.3
- b.2.3.4
- b.2.5.0
- c.1.0-beta7
- c.1.0-beta8
- c.1.0beta7
- c.1.6.1
- ≤ 1.0.2
- 1.0
- 1.0.1
- 1.0
- 1.0.0
- 1.0.1
- 1.0.2
- 1.0.3
- 1.0.4
- 1.0.5
- 1.0.6
- 1.0.7
- 1.0.8
- 1.0.9
- 1.0.11
- 1.0.11.1
- 1.0.12
- 1.2.0
- 1.2.1
- 1.2.2
- 1.2.3
- 1.2.3
- 1.2.4
- 1.2.4
- 1.2.5
- 1.2.5
- 1.2.6
- 1.2.6
- 1.2.7
- 1.2.7
- 1.2.7.1
- 1.2.7.1
- 1.2.8
- 1.2.8
- 1.2.9
- 1.2.9.1
- 1.2.9.1
- 1.2.10
- 1.2.10
- 1.2.11
- 1.2.11
- 1.2.12
- 1.2.12
- 1.2.12.1
- 1.2.13
- 1.2.13
- 1.2.14
- 1.2.14
- 1.2.15
- 1.2.15
- 1.2.16
- 1.2.16
- 1.2.17
- 1.2.17
- 1.2.18
- 1.2.18
- 1.2.19
- 1.2.19
- 1.2.20
- 1.2.20
- 1.2.21
- 1.2.21
- 1.2.21.1
- 1.2.21.1
- 1.2.22
- 1.2.22
- 1.2.23
- 1.2.23
- 1.2.24
- 1.2.24
- 1.2.25
- 1.2.25
- 1.2.26
- 1.2.26
- 1.2.26.1
- 1.2.26.1
- 1.2.26.2
- 1.2.26.2
- 1.2.27
- 1.2.28
- 1.4.0
- 1.4.0
- 1.4.0
- 1.4.0
- 1.4.1
- 1.4.2
- 1.4.3
- 1.4.4
- 1.4.5
- 1.4.6
- 1.4.7
- 1.4.7.1
- 1.4.8
- 1.4.9
- 1.4.10
- 1.4.10.1
- 1.4.11
- 1.4.12
- 1.4.12.1
- 1.4.13
- 1.4.14
- 1.4.15
- 1.4.16
- 1.4.16.1
- 1.4.16.2
- 1.4.17
- 1.4.18
- 1.4.18.1
- 1.4.19
- 1.4.19
- 1.4.19
- 1.4.19
- ≤ 1.1.0.2
- 1.0
- 1.0.1
- 1.0.2
- 1.0.3
- 1.0.3.3
- 1.1.0
- 1.1.0.1
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:N/I:N/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.40% (0.01400) | 71.51th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.40% (0.01400) | 68.87th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.52% (0.01525) | 79.99th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.54% (0.01543) | 87.65th | v3 (v2023.03.01) |
| Jul 10, 2024 | 1.89% (0.01892) | 88.62th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.89% (0.01892) | 86.60th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 17, 2023 | 1.21% (0.01213) | 66.22th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.21% (0.01213) | 64.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.21% (0.01213) | 40.54th | v2 (v2022.01.01) |
References (4)
- http://bugs.digium.com/view.php?id=10078 x_refsource_CONFIRM
- http://downloads.digium.com/pub/security/AST-2008-006.html x_refsource_CONFIRM
- http://www.altsci.com/concepts/page.php?s=asteri&p=1 x_refsource_MISC
- https://exchange.xforce.ibmcloud.com/vulnerabilities/42049 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://bugs.digium.com/view.php?id=10078 | x_refsource_CONFIRM | |
| http://downloads.digium.com/pub/security/AST-2008-006.html | x_refsource_CONFIRM | |
| http://www.altsci.com/concepts/page.php?s=asteri&p=1 | x_refsource_MISC | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/42049 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.