Unrated severityNVD Advisory· Published Apr 23, 2008· Updated Jun 16, 2026
CVE-2008-1897
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
145cpe:2.3:a:asterisk:asterisk_appliance_developer_kit:0.2:*:*:*:*:*:*:*+ 7 more
- cpe:2.3:a:asterisk:asterisk_appliance_developer_kit:0.2:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:asterisk_appliance_developer_kit:0.3:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:asterisk_appliance_developer_kit:0.4:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:asterisk_appliance_developer_kit:0.5:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:asterisk_appliance_developer_kit:0.6:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:asterisk_appliance_developer_kit:0.6.0:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:asterisk_appliance_developer_kit:0.7:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:asterisk_appliance_developer_kit:0.8:*:*:*:*:*:*:*
cpe:2.3:a:asterisk:asterisk_business_edition:*:*:*:*:*:*:*:*+ 16 more
- cpe:2.3:a:asterisk:asterisk_business_edition:*:*:*:*:*:*:*:*range: <=b.2.5.1
- cpe:2.3:a:asterisk:asterisk_business_edition:a:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:asterisk_business_edition:b.1.3.2:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:asterisk_business_edition:b.1.3.3:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:asterisk_business_edition:b.2.2.0:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:asterisk_business_edition:b.2.2.1:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:asterisk_business_edition:b.2.3.1:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:asterisk_business_edition:b.2.3.2:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:asterisk_business_edition:b.2.3.3:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:asterisk_business_edition:b.2.3.4:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:asterisk_business_edition:b.2.3.6:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:asterisk_business_edition:b.2.5.0:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:asterisk_business_edition:c.1.0:beta7:*:*:*:*:*:*
- cpe:2.3:a:asterisk:asterisk_business_edition:c.1.0:beta8:*:*:*:*:*:*
- cpe:2.3:a:asterisk:asterisk_business_edition:c.1.6:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:asterisk_business_edition:c.1.6.1:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:asterisk_business_edition:c.1.6.2:*:*:*:*:*:*:*
cpe:2.3:a:asterisk:asterisknow:*:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:asterisk:asterisknow:*:*:*:*:*:*:*:*range: <=1.0.2
- cpe:2.3:a:asterisk:asterisknow:1.0:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:asterisknow:1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:asterisk:open_source:*:*:*:*:*:*:*:*+ 106 more
- cpe:2.3:a:asterisk:open_source:*:*:*:*:*:*:*:*range: <=1.2.27
- cpe:2.3:a:asterisk:open_source:1.0:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.0.1:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.0.11:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.0.11.1:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.0.11.1:patch:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.0.11:patch:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.0.12:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.0.12:patch:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.0.2:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.0.3:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.0.3.4:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.0.4:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.0.5:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.0.6:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.0.7:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.0.8:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.0.9:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.0:rc1:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.0:rc2:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.0:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.0:beta1:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.0:beta2:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.0:rc1:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.0:rc2:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.1:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.10:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.10:netsec:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.11:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.11:netsec:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.12:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.12.1:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.12.1:netsec:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.12:netsec:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.13:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.13:netsec:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.14:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.14:netsec:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.15:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.15:netsec:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.16:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.16:netsec:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.17:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.17:netsec:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.18:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.18:netsec:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.19:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.19:netsec:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.2:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.20:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.20:netsec:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.21:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.21.1:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.21.1:netsec:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.21:netsec:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.22:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.22:netsec:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.23:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.23:netsec:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.24:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.24:netsec:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.25:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.25:netsec:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.26:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.26.1:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.26.1:netsec:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.26.2:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.26.2:netsec:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.26:netsec:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.2:netsec:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.3:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.3:netsec:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.4:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.4:netsec:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.5:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.5:netsec:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.6:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.6:netsec:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.7:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.7.1:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.7.1:netsec:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.7:netsec:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.8:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.8:netsec:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.9:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.9.1:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.2.9.1:netsec:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.4.0:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.4.0:beta2:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.4.0:beta3:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.4.0:beta4:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.4.1:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.4.10:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.4.10.1:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.4.11:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.4.12:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.4.12.1:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.4.13:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.4.14:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.4.15:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.4.16:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.4.16.1:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.4.16.2:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.4.17:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.4.18:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:open_source:1.4.18.1:*:*:*:*:*:*:*
cpe:2.3:a:asterisk:s800i:*:*:*:*:*:*:*:*+ 7 more
- cpe:2.3:a:asterisk:s800i:*:*:*:*:*:*:*:*range: <=1.1.0.2
- cpe:2.3:a:asterisk:s800i:1.0:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:s800i:1.0.1:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:s800i:1.0.2:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:s800i:1.0.3:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:s800i:1.0.3.3:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:s800i:1.1.0:*:*:*:*:*:*:*
- cpe:2.3:a:asterisk:s800i:1.1.0.1:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
27- secunia.com/advisories/29927nvdVendor Advisory
- secunia.com/advisories/30010nvdVendor Advisory
- secunia.com/advisories/30042nvdVendor Advisory
- bugs.digium.com/view.phpnvd
- downloads.digium.com/pub/security/AST-2008-006.htmlnvd
- secunia.com/advisories/34982nvd
- security.gentoo.org/glsa/glsa-200905-01.xmlnvd
- www.altsci.com/concepts/page.phpnvd
- www.debian.org/security/2008/dsa-1563nvd
- www.securityfocus.com/archive/1/491220/100/0/threadednvd
- www.securityfocus.com/bid/28901nvd
- www.securitytracker.com/idnvd
- www.vupen.com/english/advisories/2008/1324nvd
- downloads.asterisk.org/pub/security/AST-2008-006.htmlnvd
- exchange.xforce.ibmcloud.com/vulnerabilities/41966nvd
- github.com/jcollie/asterisk/commit/60de4fbbdf3ede49f158e23a9e3b679f2e519c1envd
- github.com/jcollie/asterisk/commit/771b3d8749b34b6eea4e03a2e514380da9582f90nvd
- github.com/jcollie/asterisk/commit/a8b180875b037b8da26f6a3bcc8e5e98b8c904d2nvd
- github.com/kaoru6/asterisk/commit/1fe14f38dd43dc894d21f85762b51208ba5c8acbnvd
- github.com/lyx2014/Asterisk/commit/0670e43c30135044e25cca7f80e1833e2c128653nvd
- github.com/mojolingo/asterisk/commit/20ac3662f137dbf7f42d5295590069a7d3b1166bnvd
- github.com/pruiz/asterisk/commit/e0ef9bd22810c6969a7f222eec04798f19a7e2d6nvd
- github.com/silentindark/asterisk-1/commit/fe8b7f31db687f8b9992864b82c93d22833019c7nvd
- github.com/xrg/asterisk-xrg/commit/10da3dab24e8ca08cf2c983f8d0206e383535b5anvd
- github.com/xrg/asterisk-xrg/commit/51714a24347dc57f9a208a4a8af84115ef407b83nvd
- www.redhat.com/archives/fedora-package-announce/2008-April/msg00581.htmlnvd
- www.redhat.com/archives/fedora-package-announce/2008-April/msg00600.htmlnvd
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