CVE-2008-1897
Description
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.
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| asterisk asterisk_appliance_developer_kit | 0.2, 0.3, 0.4, 0.5, 0.6, 0.6.0, 0.7, 0.8 | — |
| asterisk asterisk_business_edition | v ≤ b.2.5.1, v ≤ 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.2.3.6, b.2.5.0, c.1.0, c.1.6, c.1.6.1, c.1.6.2 | — |
| asterisk asterisknow | v ≤ 1.0.2, 1.0, 1.0.1 | — |
| asterisk open_source | v ≤ 1.2.27, v ≤ 1.4.19, 1.0, 1.0.0, 1.0.1, 1.0.2, 1.0.3, 1.0.3.4, 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, 1.2.4, 1.2.5, 1.2.6, 1.2.7, 1.2.7.1, 1.2.8, 1.2.9, 1.2.9.1, 1.2.10, 1.2.11, 1.2.12, 1.2.12.1, 1.2.13, 1.2.14, 1.2.15, 1.2.16, 1.2.17, 1.2.18, 1.2.19, 1.2.20, 1.2.21, 1.2.21.1, 1.2.22, 1.2.23, 1.2.24, 1.2.25, 1.2.26, 1.2.26.1, 1.2.26.2, 1.4.0, 1.4.1, 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 | — |
| asterisk s800i | v ≤ 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 | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.