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.
CVE-2008-1897 is a security vulnerability that . Impacting 5 products from asterisk, from asterisk, from asterisk and 2 others, organizations running these solutions should prioritize assessment and patching.
Originally identified in 2008, this vulnerability predates many modern security frameworks and practices. The vulnerability landscape of that era was characterized by different threat models and less mature defense mechanisms compared to contemporary standards.
2008-04-23T16:05:00.000
2025-04-09T00:30:58.490
Deferred
CVSSv2: 4.3 (MEDIUM)
AV:N/AC:M/Au:N/C:N/I:N/A:P
8.6
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | asterisk | asterisk_appliance_developer_kit | 0.2 | Yes |
| Application | asterisk | asterisk_appliance_developer_kit | 0.3 | Yes |
| Application | asterisk | asterisk_appliance_developer_kit | 0.4 | Yes |
| Application | asterisk | asterisk_appliance_developer_kit | 0.5 | Yes |
| Application | asterisk | asterisk_appliance_developer_kit | 0.6 | Yes |
| Application | asterisk | asterisk_appliance_developer_kit | 0.6.0 | Yes |
| Application | asterisk | asterisk_appliance_developer_kit | 0.7 | Yes |
| Application | asterisk | asterisk_appliance_developer_kit | 0.8 | Yes |
| Application | asterisk | asterisk_business_edition | ≤ b.2.5.1 | Yes |
| Application | asterisk | asterisk_business_edition | ≤ c1.8.0 | Yes |
| Application | asterisk | asterisk_business_edition | a | Yes |
| Application | asterisk | asterisk_business_edition | b.1.3.2 | Yes |
| Application | asterisk | asterisk_business_edition | b.1.3.3 | Yes |
| Application | asterisk | asterisk_business_edition | b.2.2.0 | Yes |
| Application | asterisk | asterisk_business_edition | b.2.2.1 | Yes |
| Application | asterisk | asterisk_business_edition | b.2.3.1 | Yes |
| Application | asterisk | asterisk_business_edition | b.2.3.2 | Yes |
| Application | asterisk | asterisk_business_edition | b.2.3.3 | Yes |
| Application | asterisk | asterisk_business_edition | b.2.3.4 | Yes |
| Application | asterisk | asterisk_business_edition | b.2.3.6 | Yes |
| Application | asterisk | asterisk_business_edition | b.2.5.0 | Yes |
| Application | asterisk | asterisk_business_edition | c.1.0 | Yes |
| Application | asterisk | asterisk_business_edition | c.1.0 | Yes |
| Application | asterisk | asterisk_business_edition | c.1.6 | Yes |
| Application | asterisk | asterisk_business_edition | c.1.6.1 | Yes |
| Application | asterisk | asterisk_business_edition | c.1.6.2 | Yes |
| Application | asterisk | asterisknow | ≤ 1.0.2 | Yes |
| Application | asterisk | asterisknow | 1.0 | Yes |
| Application | asterisk | asterisknow | 1.0.1 | Yes |
| Application | asterisk | open_source | ≤ 1.2.27 | Yes |
| Application | asterisk | open_source | ≤ 1.4.19 | Yes |
| Application | asterisk | open_source | 1.0 | Yes |
| Application | asterisk | open_source | 1.0 | Yes |
| Application | asterisk | open_source | 1.0 | Yes |
| Application | asterisk | open_source | 1.0.0 | Yes |
| Application | asterisk | open_source | 1.0.1 | Yes |
| Application | asterisk | open_source | 1.0.2 | Yes |
| Application | asterisk | open_source | 1.0.3 | Yes |
| Application | asterisk | open_source | 1.0.3.4 | Yes |
| Application | asterisk | open_source | 1.0.4 | Yes |
| Application | asterisk | open_source | 1.0.5 | Yes |
| Application | asterisk | open_source | 1.0.6 | Yes |
| Application | asterisk | open_source | 1.0.7 | Yes |
| Application | asterisk | open_source | 1.0.8 | Yes |
| Application | asterisk | open_source | 1.0.9 | Yes |
| Application | asterisk | open_source | 1.0.11 | Yes |
| Application | asterisk | open_source | 1.0.11 | Yes |
| Application | asterisk | open_source | 1.0.11.1 | Yes |
| Application | asterisk | open_source | 1.0.11.1 | Yes |
| Application | asterisk | open_source | 1.0.12 | Yes |
| Application | asterisk | open_source | 1.0.12 | Yes |
| Application | asterisk | open_source | 1.2.0 | Yes |
| Application | asterisk | open_source | 1.2.0 | Yes |
| Application | asterisk | open_source | 1.2.0 | Yes |
| Application | asterisk | open_source | 1.2.0 | Yes |
| Application | asterisk | open_source | 1.2.0 | Yes |
| Application | asterisk | open_source | 1.2.1 | Yes |
| Application | asterisk | open_source | 1.2.2 | Yes |
| Application | asterisk | open_source | 1.2.2 | Yes |
| Application | asterisk | open_source | 1.2.3 | Yes |
| Application | asterisk | open_source | 1.2.3 | Yes |
| Application | asterisk | open_source | 1.2.4 | Yes |
| Application | asterisk | open_source | 1.2.4 | Yes |
| Application | asterisk | open_source | 1.2.5 | Yes |
| Application | asterisk | open_source | 1.2.5 | Yes |
| Application | asterisk | open_source | 1.2.6 | Yes |
| Application | asterisk | open_source | 1.2.6 | Yes |
| Application | asterisk | open_source | 1.2.7 | Yes |
| Application | asterisk | open_source | 1.2.7 | Yes |
| Application | asterisk | open_source | 1.2.7.1 | Yes |
| Application | asterisk | open_source | 1.2.7.1 | Yes |
| Application | asterisk | open_source | 1.2.8 | Yes |
| Application | asterisk | open_source | 1.2.8 | Yes |
| Application | asterisk | open_source | 1.2.9 | Yes |
| Application | asterisk | open_source | 1.2.9.1 | Yes |
| Application | asterisk | open_source | 1.2.9.1 | Yes |
| Application | asterisk | open_source | 1.2.10 | Yes |
| Application | asterisk | open_source | 1.2.10 | Yes |
| Application | asterisk | open_source | 1.2.11 | Yes |
| Application | asterisk | open_source | 1.2.11 | Yes |
| Application | asterisk | open_source | 1.2.12 | Yes |
| Application | asterisk | open_source | 1.2.12 | Yes |
| Application | asterisk | open_source | 1.2.12.1 | Yes |
| Application | asterisk | open_source | 1.2.12.1 | Yes |
| Application | asterisk | open_source | 1.2.13 | Yes |
| Application | asterisk | open_source | 1.2.13 | Yes |
| Application | asterisk | open_source | 1.2.14 | Yes |
| Application | asterisk | open_source | 1.2.14 | Yes |
| Application | asterisk | open_source | 1.2.15 | Yes |
| Application | asterisk | open_source | 1.2.15 | Yes |
| Application | asterisk | open_source | 1.2.16 | Yes |
| Application | asterisk | open_source | 1.2.16 | Yes |
| Application | asterisk | open_source | 1.2.17 | Yes |
| Application | asterisk | open_source | 1.2.17 | Yes |
| Application | asterisk | open_source | 1.2.18 | Yes |
| Application | asterisk | open_source | 1.2.18 | Yes |
| Application | asterisk | open_source | 1.2.19 | Yes |
| Application | asterisk | open_source | 1.2.19 | Yes |
| Application | asterisk | open_source | 1.2.20 | Yes |
| Application | asterisk | open_source | 1.2.20 | Yes |
| Application | asterisk | open_source | 1.2.21 | Yes |
| Application | asterisk | open_source | 1.2.21 | Yes |
| Application | asterisk | open_source | 1.2.21.1 | Yes |
| Application | asterisk | open_source | 1.2.21.1 | Yes |
| Application | asterisk | open_source | 1.2.22 | Yes |
| Application | asterisk | open_source | 1.2.22 | Yes |
| Application | asterisk | open_source | 1.2.23 | Yes |
| Application | asterisk | open_source | 1.2.23 | Yes |
| Application | asterisk | open_source | 1.2.24 | Yes |
| Application | asterisk | open_source | 1.2.24 | Yes |
| Application | asterisk | open_source | 1.2.25 | Yes |
| Application | asterisk | open_source | 1.2.25 | Yes |
| Application | asterisk | open_source | 1.2.26 | Yes |
| Application | asterisk | open_source | 1.2.26 | Yes |
| Application | asterisk | open_source | 1.2.26.1 | Yes |
| Application | asterisk | open_source | 1.2.26.1 | Yes |
| Application | asterisk | open_source | 1.2.26.2 | Yes |
| Application | asterisk | open_source | 1.2.26.2 | Yes |
| Application | asterisk | open_source | 1.4.0 | Yes |
| Application | asterisk | open_source | 1.4.0 | Yes |
| Application | asterisk | open_source | 1.4.0 | Yes |
| Application | asterisk | open_source | 1.4.0 | Yes |
| Application | asterisk | open_source | 1.4.1 | Yes |
| Application | asterisk | open_source | 1.4.10 | Yes |
| Application | asterisk | open_source | 1.4.10.1 | Yes |
| Application | asterisk | open_source | 1.4.11 | Yes |
| Application | asterisk | open_source | 1.4.12 | Yes |
| Application | asterisk | open_source | 1.4.12.1 | Yes |
| Application | asterisk | open_source | 1.4.13 | Yes |
| Application | asterisk | open_source | 1.4.14 | Yes |
| Application | asterisk | open_source | 1.4.15 | Yes |
| Application | asterisk | open_source | 1.4.16 | Yes |
| Application | asterisk | open_source | 1.4.16.1 | Yes |
| Application | asterisk | open_source | 1.4.16.2 | Yes |
| Application | asterisk | open_source | 1.4.17 | Yes |
| Application | asterisk | open_source | 1.4.18 | Yes |
| Application | asterisk | open_source | 1.4.18.1 | Yes |
| Application | asterisk | s800i | ≤ 1.1.0.2 | Yes |
| Application | asterisk | s800i | 1.0 | Yes |
| Application | asterisk | s800i | 1.0.1 | Yes |
| Application | asterisk | s800i | 1.0.2 | Yes |
| Application | asterisk | s800i | 1.0.3 | Yes |
| Application | asterisk | s800i | 1.0.3.3 | Yes |
| Application | asterisk | s800i | 1.1.0 | Yes |
| Application | asterisk | s800i | 1.1.0.1 | Yes |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For asterisk's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.