{"cve":"CVE-2008-1923","nvd":{"published":"2008-04-23T16:05:00.000","modified":"2026-06-16T22:52:45.520","status":"Modified","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.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-16"],"references":["http://bugs.digium.com/view.php?id=10078","http://downloads.digium.com/pub/security/AST-2008-006.html","http://www.altsci.com/concepts/page.php?s=asteri&p=1","https://exchange.xforce.ibmcloud.com/vulnerabilities/42049","http://bugs.digium.com/view.php?id=10078"],"products":["asterisk:asterisk_appliance_developer_kit","asterisk:asterisk_business_edition","asterisk:asterisknow","asterisk:open_source","asterisk:s800i"],"source":"nvd","synced_at":"2026-10-19T19:51:11.071189229+00:00"},"epss":{"cve":"CVE-2008-1923","score":0.014,"percentile":0.72507,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}