{"id":"CVE-2008-1923","aliases":["DEBIAN-CVE-2008-1923","EUVD-2008-1923","GHSA-3p74-pwfx-pcgr"],"status":"published","title":"The IAX2 channel driver (chan_iax2) in Asterisk 1.2 before revision 72630 and 1.4 before revision...","description":"The IAX2 channel driver (chan_iax2) in Asterisk 1.2 before revision 72630 and 1.4 before revision 65679, when configured to allow unauthenticated calls, sends \"early audio\" to an unverified source IP address of a NEW message, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed NEW message.","severity":{"version":"2.0","score":7.1,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.014,"percentile":0.72682,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-16"],"published":"2008-04-23T16:00:00Z","modified":"2026-10-23T17:47:45Z","fixes":[{"ecosystem":"Debian:14","package":"asterisk","fixed_in":["1:1.4.19.1~dfsg-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:14","package":"asterisk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.4.19.1~dfsg-1"}]}],"versions":["0.1.11-3","0.1.11-3woody1","1:1.0.5-2","1:1.0.5-4","1:1.0.6-1","1:1.0.6-2","1:1.0.7-1","1:1.0.7.dfsg.1-1","1:1.0.7.dfsg.1-2","1:1.0.7.dfsg.1-2sarge1","1:1.0.7.dfsg.1-2sarge2","1:1.0.7.dfsg.1-2sarge3","1:1.0.7.dfsg.1-2sarge4","1:1.0.7.dfsg.1-2sarge5","1:1.0.7.dfsg.1-2sarge6","1:1.0.9.dfsg-1","1:1.0.9.dfsg-3","1:1.0.9.dfsg-4","1:1.0.9.dfsg-5","1:1.0.9.dfsg-6","1:1.2.0-beta1.dfsg-1","1:1.2.0-beta2.dfsg-1","1:1.2.0-beta2.dfsg-2","1:1.2.0-beta2.dfsg-3","1:1.2.0-rc1.dfsg-1","1:1.2.0-rc2.dfsg-1","1:1.2.0.dfsg-1","1:1.2.0.dfsg-2","1:1.2.0.dfsg-3","1:1.2.0.dfsg-4","1:1.2.0.dfsg-5","1:1.2.0.dfsg-6","1:1.2.1.dfsg-1","1:1.2.1.dfsg-2","1:1.2.1.dfsg-3","1:1.2.10.dfsg-1","1:1.2.10.dfsg-1bpo1","1:1.2.10.dfsg-2","1:1.2.10.dfsg-3","1:1.2.11.dfsg-1","1:1.2.12.1.dfsg-1","1:1.2.13~dfsg-1","1:1.2.13~dfsg-2","1:1.2.13~dfsg-2etch1","1:1.2.13~dfsg-2etch2","1:1.2.13~dfsg-2etch3","1:1.2.13~dfsg-2etch4","1:1.2.14~dfsg-1","1:1.2.14~dfsg-2","1:1.2.14~dfsg-3","1:1.2.14~dfsg-4","1:1.2.15~dfsg-1","1:1.2.16~dfsg-1","1:1.2.17~dfsg-1","1:1.2.4.dfsg-1","1:1.2.4.dfsg-2","1:1.2.4.dfsg-3","1:1.2.4.dfsg-4","1:1.2.4.dfsg-5","1:1.2.4.dfsg-6","1:1.2.4.dfsg-6+b1","1:1.2.4.dfsg-7","1:1.2.7.1.dfsg-1","1:1.2.7.1.dfsg-2","1:1.2.7.1.dfsg-3","1:1.2.9.1.dfsg-1","1:1.4.10~dfsg-1","1:1.4.11~dfsg-1","1:1.4.11~dfsg-2","1:1.4.11~dfsg-3","1:1.4.11~dfsg-4","1:1.4.13~dfsg-1","1:1.4.15~dfsg-1","1:1.4.16.2~dfsg-1","1:1.4.16.2~dfsg-2","1:1.4.17~dfsg-1","1:1.4.17~dfsg-2","1:1.4.18.1~dfsg-1","1:1.4.18~dfsg-1","1:1.4.2~dfsg-1","1:1.4.2~dfsg-2","1:1.4.2~dfsg-3","1:1.4.2~dfsg-4","1:1.4.2~dfsg-5","1:1.4.3~dfsg-1","1:1.4.4~dfsg-1","1:1.4.4~dfsg-2","1:1.4.4~dfsg-3","1:1.4.5~dfsg-1","1:1.4.6~dfsg-1","1:1.4.8~dfsg-1","1:1.4.8~dfsg-2","1:1.4.9~dfsg-1"]}],"products":[{"vendor":"asterisk","product":"asterisk_appliance_developer_kit"},{"vendor":"asterisk","product":"asterisk_business_edition"},{"vendor":"asterisk","product":"asterisknow"},{"vendor":"asterisk","product":"open_source"},{"vendor":"asterisk","product":"s800i"}],"references":[{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/42049","tags":["vdb-entry","x_refsource_XF","x_transferred","web"]},{"url":"http://downloads.digium.com/pub/security/AST-2008-006.html","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"http://bugs.digium.com/view.php?id=10078","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"http://www.altsci.com/concepts/page.php?s=asteri\u0026p=1","tags":["x_refsource_MISC","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2008-1923"},{"url":"https://github.com/advisories/GHSA-3p74-pwfx-pcgr"},{"url":"https://security-tracker.debian.org/tracker/CVE-2008-1923","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2008-1923","description":"The IAX2 channel driver (chan_iax2) in Asterisk 1.2 before revision 72630 and 1.4 before revision 65679, when configured to allow unauthenticated calls, sends \"early audio\" to an unverified source IP address of a NEW message, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed NEW message.","status":"published","published":"2008-04-23T16:00:00Z","modified":"2024-08-07T08:41:00.169Z","updated_at":"2026-11-02T14:34:48.103804Z"}],"euvd":[{"id":"EUVD-2008-1923","description":"The IAX2 channel driver (chan_iax2) in Asterisk 1.2 before revision 72630 and 1.4 before revision 65679, when configured to allow unauthenticated calls, sends \"early audio\" to an unverified source IP address of a NEW message, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed NEW message.","status":"published","published":"2008-04-23T16:00:00Z","modified":"2024-08-07T08:41:00Z","updated_at":"2026-11-03T01:38:59.221562Z"}],"ghsa":[{"id":"GHSA-3p74-pwfx-pcgr","title":"The IAX2 channel driver (chan_iax2) in Asterisk 1.2 before revision 72630 and 1.4 before revision...","description":"The IAX2 channel driver (chan_iax2) in Asterisk 1.2 before revision 72630 and 1.4 before revision 65679, when configured to allow unauthenticated calls, sends \"early audio\" to an unverified source IP address of a NEW message, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed NEW message.","status":"published","published":"2022-05-01T23:44:57Z","modified":"2023-01-31T05:06:38Z","updated_at":"2026-11-02T14:49:03.947678Z"}],"nvd":[{"id":"CVE-2008-1923","description":"The IAX2 channel driver (chan_iax2) in Asterisk 1.2 before revision 72630 and 1.4 before revision 65679, when configured to allow unauthenticated calls, sends \"early audio\" to an unverified source IP address of a NEW message, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed NEW message.","status":"published","published":"2008-04-23T16:05:00Z","modified":"2026-06-16T22:52:45.52Z","cvss":[{"version":"2.0","score":7.1,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-16"],"updated_at":"2026-11-02T14:01:26.27008Z"}],"osv":[{"id":"CVE-2008-1923","description":"The IAX2 channel driver (chan_iax2) in Asterisk 1.2 before revision 72630 and 1.4 before revision 65679, when configured to allow unauthenticated calls, sends \"early audio\" to an unverified source IP address of a NEW message, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed NEW message.","status":"published","published":"2008-04-23T16:05:00Z","modified":"2026-04-10T03:39:48.538225Z","updated_at":"2026-11-02T15:43:57.178433Z"},{"id":"DEBIAN-CVE-2008-1923","description":"The IAX2 channel driver (chan_iax2) in Asterisk 1.2 before revision 72630 and 1.4 before revision 65679, when configured to allow unauthenticated calls, sends \"early audio\" to an unverified source IP address of a NEW message, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed NEW message.","status":"published","published":"2008-04-23T16:05:00Z","modified":"2026-10-23T17:47:45.149742756Z","updated_at":"2026-11-02T15:45:23.742363Z"}]}}