The IAX2 channel driver (chan_iax2) in Asterisk Open Source 1.0.x, 1.2.x before 1.2.28, and 1.4.x before 1.4.19.1; Business Edition A.x.x, B.x.x before B.2.5.2, and C.x.x before C.1.8.1; AsteriskNOW before 1.0.3; Appliance Developer Kit 0.x.x; and s800i before 1.1.0.3, when configured to allow unauthenticated calls, does not verify that an ACK response contains a call number matching the server's reply to a NEW message, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed ACK response that does not complete a 3-way handshake. NOTE: this issue exists because of an incomplete fix for CVE-2008-1923.
Metrics
Affected Vendors & Products
Advisories
Source | ID | Title |
---|---|---|
![]() |
DSA-1563-1 | New asterisk packages fix denial of service |
![]() |
EUVD-2008-1897 | The IAX2 channel driver (chan_iax2) in Asterisk Open Source 1.0.x, 1.2.x before 1.2.28, and 1.4.x before 1.4.19.1; Business Edition A.x.x, B.x.x before B.2.5.2, and C.x.x before C.1.8.1; AsteriskNOW before 1.0.3; Appliance Developer Kit 0.x.x; and s800i before 1.1.0.3, when configured to allow unauthenticated calls, does not verify that an ACK response contains a call number matching the server's reply to a NEW message, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed ACK response that does not complete a 3-way handshake. NOTE: this issue exists because of an incomplete fix for CVE-2008-1923. |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Wed, 28 May 2025 14:45:00 +0000
Type | Values Removed | Values Added |
---|---|---|
References |
Thu, 22 May 2025 04:30:00 +0000
Type | Values Removed | Values Added |
---|---|---|
References |

Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2024-08-07T08:40:59.845Z
Reserved: 2008-04-20T00:00:00
Link: CVE-2008-1897

No data.

Status : Deferred
Published: 2008-04-23T16:05:00.000
Modified: 2025-04-09T00:30:58.490
Link: CVE-2008-1897


No data.