CVE-2008-1897
mediumpriority · track · 18EPSS 0.027 · 86 %ileEUUSEPSS · scored 2026-10-28
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.7–4.3
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (103)
Products and version ranges known to be affected.
- asterisk asterisk appliance developer kit= 0.2nvdUScpe:2.3:a:asterisk:asterisk_appliance_developer_kit:*:*:*:*:*:*:*:*
- asterisk asterisk appliance developer kit= 0.3nvdUScpe:2.3:a:asterisk:asterisk_appliance_developer_kit:*:*:*:*:*:*:*:*
- asterisk asterisk appliance developer kit= 0.4nvdUScpe:2.3:a:asterisk:asterisk_appliance_developer_kit:*:*:*:*:*:*:*:*
- asterisk asterisk appliance developer kit= 0.5nvdUScpe:2.3:a:asterisk:asterisk_appliance_developer_kit:*:*:*:*:*:*:*:*
- asterisk asterisk appliance developer kit= 0.6nvdUScpe:2.3:a:asterisk:asterisk_appliance_developer_kit:*:*:*:*:*:*:*:*
- asterisk asterisk appliance developer kit= 0.6.0nvdUScpe:2.3:a:asterisk:asterisk_appliance_developer_kit:*:*:*:*:*:*:*:*
- asterisk asterisk appliance developer kit= 0.7nvdUScpe:2.3:a:asterisk:asterisk_appliance_developer_kit:*:*:*:*:*:*:*:*
- asterisk asterisk appliance developer kit= 0.8nvdUScpe:2.3:a:asterisk:asterisk_appliance_developer_kit:*:*:*:*:*:*:*:*
- asterisk asterisk business edition≤ b.2.5.1nvdUScpe:2.3:a:asterisk:asterisk_business_edition:*:*:*:*:*:*:*:*
- asterisk asterisk business edition≤ c1.8.0nvdUScpe:2.3:a:asterisk:asterisk_business_edition:*:*:*:*:*:*:*:*
- asterisk asterisk business edition= anvdUScpe:2.3:a:asterisk:asterisk_business_edition:*:*:*:*:*:*:*:*
- asterisk asterisk business edition= b.1.3.2nvdUScpe:2.3:a:asterisk:asterisk_business_edition:*:*:*:*:*:*:*:*
- asterisk asterisk business edition= b.1.3.3nvdUScpe:2.3:a:asterisk:asterisk_business_edition:*:*:*:*:*:*:*:*
- asterisk asterisk business edition= b.2.2.0nvdUScpe:2.3:a:asterisk:asterisk_business_edition:*:*:*:*:*:*:*:*
- asterisk asterisk business edition= b.2.2.1nvdUScpe:2.3:a:asterisk:asterisk_business_edition:*:*:*:*:*:*:*:*
- asterisk asterisk business edition= b.2.3.1nvdUScpe:2.3:a:asterisk:asterisk_business_edition:*:*:*:*:*:*:*:*
- asterisk asterisk business edition= b.2.3.2nvdUScpe:2.3:a:asterisk:asterisk_business_edition:*:*:*:*:*:*:*:*
- asterisk asterisk business edition= b.2.3.3nvdUScpe:2.3:a:asterisk:asterisk_business_edition:*:*:*:*:*:*:*:*
- asterisk asterisk business edition= b.2.3.4nvdUScpe:2.3:a:asterisk:asterisk_business_edition:*:*:*:*:*:*:*:*
also known as (2)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (54)
External citations — patches, advisories, analysis.
- http://bugs.digium.com/view.php?id=10078enisa_euvd
- http://downloads.digium.com/pub/security/AST-2008-006.htmlenisa_euvd
- http://secunia.com/advisories/29927enisa_euvd
- http://secunia.com/advisories/30010enisa_euvd
- http://secunia.com/advisories/30042enisa_euvd
- http://secunia.com/advisories/34982enisa_euvd
- http://security.gentoo.org/glsa/glsa-200905-01.xmlenisa_euvd
- http://www.altsci.com/concepts/page.php?s=asteri&p=2enisa_euvd
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