{"id":"CVE-2025-49832","summary":"Asterisk is Vulnerable to Remote DoS and possible RCE Attacks During Memory Allocation","details":"Asterisk is an open source private branch exchange and telephony toolkit. In versions up to and including 18.26.2, between 20.00.0 and 20.15.0, 20.7-cert6, 21.00.0, 22.00.0 through 22.5.0, there is a remote DoS and possible RCE condition in `asterisk/res/res_stir_shaken /verification.c` that can be exploited when an attacker can set an arbitrary Identity header, or STIR/SHAKEN is enabled, with verification set in the SIP profile associated with the endpoint to be attacked. This is fixed in versions 18.26.3, 20.7-cert6, 20.15.1, 21.10.1 and 22.5.1.","aliases":["GHSA-mrq5-74j5-f5cr"],"modified":"2026-08-12T03:51:42.511261176Z","published":"2025-08-01T17:57:29.933Z","database_specific":{"cwe_ids":["CWE-476"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/49xxx/CVE-2025-49832.json","cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/49xxx/CVE-2025-49832.json"},{"type":"ADVISORY","url":"https://github.com/asterisk/asterisk/security/advisories/GHSA-mrq5-74j5-f5cr"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-49832"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/asterisk/asterisk","events":[{"introduced":"0"},{"fixed":"544aceb34f061af5371994e9e0701e0231d4409f"},{"introduced":"c6c7103efa6605a6db7ca28b4b17cd2d1c15a05c"},{"fixed":"21d22b328a0ee310df50868c36d6d466d111f133"},{"introduced":"12da95e53ff42287ad69d6d5922e06c3d62010ac"},{"fixed":"ff38e11ded47cb69adc1ec0c14e2a45aa7bf50da"},{"introduced":"8e4a09f71162ebc1e4bb2159dfc638aa2328047c"},{"fixed":"9130399bb961771b0acd2a137c7dd64715ece417"},{"introduced":"d8a0290d4a8b0ece3955f9c7b895659f8eba88f2"},{"last_affected":"5b15600bd766b21b12a5d73e3050e3ec4f2e8db9"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"18.26.3"},{"last_affected":"18.9"},{"introduced":"20.0.0"},{"fixed":"20.15.1"},{"introduced":"21.0.0"},{"fixed":"21.10.1"},{"introduced":"22.0.0"},{"fixed":"22.5.1"},{"introduced":"20.7-cert1"},{"last_affected":"20.7-cert1"},{"introduced":"20.7-cert1\\-rc1"},{"last_affected":"20.7-cert1\\-rc1"},{"introduced":"20.7-cert1\\-rc2"},{"last_affected":"20.7-cert1\\-rc2"},{"introduced":"20.7-cert2"},{"last_affected":"20.7-cert2"},{"introduced":"20.7-cert3"},{"last_affected":"20.7-cert3"},{"introduced":"20.7-cert4"},{"last_affected":"20.7-cert4"},{"introduced":"20.7-cert5"},{"last_affected":"20.7-cert5"},{"introduced":"20.7-cert6"},{"last_affected":"20.7-cert6"}],"source":["CPE_RANGE","CPE_STRING"],"cpe":["cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:*","cpe:2.3:a:sangoma:certified_asterisk:*:*:*:*:*:*:*:*","cpe:2.3:a:sangoma:certified_asterisk:20.7:cert1:*:*:*:*:*:*","cpe:2.3:a:sangoma:certified_asterisk:20.7:cert1-rc1:*:*:*:*:*:*","cpe:2.3:a:sangoma:certified_asterisk:20.7:cert1-rc2:*:*:*:*:*:*","cpe:2.3:a:sangoma:certified_asterisk:20.7:cert2:*:*:*:*:*:*","cpe:2.3:a:sangoma:certified_asterisk:20.7:cert3:*:*:*:*:*:*","cpe:2.3:a:sangoma:certified_asterisk:20.7:cert4:*:*:*:*:*:*","cpe:2.3:a:sangoma:certified_asterisk:20.7:cert5:*:*:*:*:*:*","cpe:2.3:a:sangoma:certified_asterisk:20.7:cert6:*:*:*:*:*:*"]}}],"versions":["20.7-cert1","20.7-cert1\\-rc1","20.7-cert1\\-rc2","20.7-cert2","20.7-cert3","20.7-cert4","20.7-cert5","20.7-cert6","20.15.0","20.15.0-rc3","20.15.0-rc1","20.15.0-rc2","20.14.0","21.10.0","21.10.0-rc3","21.10.0-rc1","21.10.0-rc2","21.9.0","22.5.0","22.5.0-rc3","22.5.0-rc1","22.5.0-rc2","22.4.0","certified-20.7-cert6","18.26.2","certified-20.7-cert5","certified-20.7-cert4","18.26.1","22.4.0-rc1","21.9.0-rc1","20.14.0-rc1","22.3.0","21.8.0","20.13.0","22.3.0-rc1","21.8.0-rc1","20.13.0-rc1","22.2.0","21.7.0","20.12.0","22.2.0-rc2","21.7.0-rc2","20.12.0-rc2","22.2.0-rc1","21.7.0-rc1","20.12.0-rc1","22.1.1","21.6.1","20.11.1","22.1.0","21.6.0","certified-20.7-cert3","20.11.0","18.26.0","18.26.0-rc1","22.1.0-rc1","21.6.0-rc1","20.11.0-rc1","22.0.0","21.5.0","20.10.0","18.25.0","18.25.0-rc2","20.10.0-rc2","21.5.0-rc2","21.5.0-rc1","20.10.0-rc1","18.25.0-rc1","21.4.3","20.9.3","18.24.3","certified-20.7-cert2","21.4.2","20.9.2","18.24.2","21.4.1","20.9.1","18.24.1","certified-20.7-cert1","18.24.0","20.9.0","21.4.0","21.4.0-rc1","20.9.0-rc1","18.24.0-rc1","21.3.1","20.8.1","18.23.1","21.3.0","20.8.0","18.23.0","21.3.0-rc1","20.8.0-rc1","18.23.0-rc1","certified-20.7-cert1-pre1","20.7.0","21.2.0","18.22.0","21.2.0-rc2","20.7.0-rc2","18.22.0-rc2","20.7.0-rc1","18.22.0-rc1","21.2.0-rc1","21.1.0","20.6.0","18.21.0","21.1.0-rc2","20.6.0-rc2","18.21.0-rc2","21.1.0-rc1","20.6.0-rc1","18.21.0-rc1","21.0.2","20.5.2","18.20.2","18.20.1","20.5.1","21.0.1","21.0.0","20.5.0","18.20.0","20.5.0-rc1","18.20.0-rc1","20.4.0","18.19.0","18.19.0-rc2","20.4.0-rc2","20.4.0-rc1","18.19.0-rc1","20.3.1","18.18.1","20.3.0","18.18.0","20.3.0-rc1","18.18.0-rc1","20.2.1","18.17.1","20.2.0","18.17.0","20.2.0-rc1","18.17.0-rc1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-49832.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}