{"cve":{"cve_id":"CVE-2008-3903","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.01852,"epss_percentile":0.76365,"epss_as_of":"2026-06-23","description":"Asterisk Open Source 1.2.x before 1.2.32, 1.4.x before 1.4.24.1, and 1.6.0.x before 1.6.0.8; Asterisk Business Edition A.x.x, B.x.x before B.2.5.8, C.1.x.x before C.1.10.5, and C.2.x.x before C.2.3.3; s800i 1.3.x before 1.3.0.2; and Trixbox PBX 2.6.1, when Digest authentication and authalwaysreject are enabled, generates different responses depending on whether a SIP username is valid, which allows remote attackers to enumerate valid usernames.","published_at":"2008-09-04T19:00:00Z","last_modified_at":"2026-06-16T22:56:46.497000Z","cvss_v3_score":null,"cvss_v3_vector":null,"cvss_v3_severity":null,"cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-200"],"nvd_references":["http://security.gentoo.org/glsa/glsa-200905-01.xml","http://downloads.asterisk.org/pub/security/AST-2009-003.html","http://www.securityfocus.com/bid/34353","http://secunia.com/advisories/37677","http://www.debian.org/security/2009/dsa-1952","http://misel.com/?p=52","https://exchange.xforce.ibmcloud.com/vulnerabilities/45059","http://www.vupen.com/english/advisories/2009/0933","http://secunia.com/advisories/34982"],"vuln_status":"Modified","trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:04:37.323009Z"},"effective_severity":null,"badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":null,"metrics":[]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"asterisk","vendor_name":"asterisk","product_slug":"p-b-x","product_name":"p_b_x","version_start":"1.2","version_start_inclusive":true,"version_end":"1.2","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:asterisk:p_b_x:1.2:*:*:*:*:*:*:*"},{"vendor_slug":"asterisk","vendor_name":"asterisk","product_slug":"p-b-x","product_name":"p_b_x","version_start":"1.2.22","version_start_inclusive":true,"version_end":"1.2.22","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:asterisk:p_b_x:1.2.22:*:*:*:*:*:*:*"},{"vendor_slug":"asterisk","vendor_name":"asterisk","product_slug":"p-b-x","product_name":"p_b_x","version_start":"1.4.21.1","version_start_inclusive":true,"version_end":"1.4.21.1","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:asterisk:p_b_x:1.4.21.1:*:*:*:*:*:*:*"},{"vendor_slug":"asterisk","vendor_name":"asterisk","product_slug":"p-b-x","product_name":"p_b_x","version_start":"1.6","version_start_inclusive":true,"version_end":"1.6","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:asterisk:p_b_x:1.6:*:*:*:*:*:*:*"},{"vendor_slug":"trixbox","vendor_name":"trixbox","product_slug":"pbx","product_name":"pbx","version_start":"2.6.1","version_start_inclusive":true,"version_end":"2.6.1","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:trixbox:pbx:2.6.1:*:*:*:*:*:*:*"}],"exploit_refs":[],"news":[],"references":[{"url":"http://security.gentoo.org/glsa/glsa-200905-01.xml","source_type":"MISC","tags":[]},{"url":"http://downloads.asterisk.org/pub/security/AST-2009-003.html","source_type":"MISC","tags":[]},{"url":"http://www.securityfocus.com/bid/34353","source_type":"MISC","tags":[]},{"url":"http://secunia.com/advisories/37677","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"http://www.debian.org/security/2009/dsa-1952","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"http://misel.com/?p=52","source_type":"MISC","tags":[]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/45059","source_type":"MISC","tags":[]},{"url":"http://www.vupen.com/english/advisories/2009/0933","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"http://secunia.com/advisories/34982","source_type":"VENDOR_ADVISORY","tags":["advisory"]}],"timeline":[{"type":"published","at":"2008-09-04T19:00:00Z","label":"CVE published","source":null}]}