CVE-2021-37706

{"id": "CVE-2021-37706", "cveTags": [], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "[email protected]", "cvssData": {"version": "2.0", "baseScore": 9.3, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "authentication": "NONE", "integrityImpact": "COMPLETE", "accessComplexity": "MEDIUM", "availabilityImpact": "COMPLETE", "confidentialityImpact": "COMPLETE"}, "acInsufInfo": false, "impactScore": 10.0, "baseSeverity": "HIGH", "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Secondary", "source": "[email protected]", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.3, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 3.4, "exploitabilityScore": 3.9}, {"type": "Primary", "source": "[email protected]", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "published": "2021-12-22T18:15:07.487", "references": [{"url": "http://packetstormsecurity.com/files/166225/Asterisk-Project-Security-Advisory-AST-2022-004.html", "tags": ["Third Party Advisory", "VDB Entry"], "source": "[email protected]"}, {"url": "http://seclists.org/fulldisclosure/2022/Mar/0", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "source": "[email protected]"}, {"url": "https://github.com/pjsip/pjproject/commit/15663e3f37091069b8c98a7fce680dc04bc8e865", "tags": ["Patch", "Third Party Advisory"], "source": "[email protected]"}, {"url": "https://github.com/pjsip/pjproject/security/advisories/GHSA-2qpg-f6wf-w984", "tags": ["Patch", "Third Party Advisory"], "source": "[email protected]"}, {"url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "[email protected]"}, {"url": "https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "[email protected]"}, {"url": "https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html", "source": "[email protected]"}, {"url": "https://security.gentoo.org/glsa/202210-37", "tags": ["Third Party Advisory"], "source": "[email protected]"}, {"url": "https://www.debian.org/security/2022/dsa-5285", "tags": ["Third Party Advisory"], "source": "[email protected]"}, {"url": "http://packetstormsecurity.com/files/166225/Asterisk-Project-Security-Advisory-AST-2022-004.html", "tags": ["Third Party Advisory", "VDB Entry"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://seclists.org/fulldisclosure/2022/Mar/0", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://github.com/pjsip/pjproject/commit/15663e3f37091069b8c98a7fce680dc04bc8e865", "tags": ["Patch", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://github.com/pjsip/pjproject/security/advisories/GHSA-2qpg-f6wf-w984", "tags": ["Patch", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.debian.org/debian-lts-announce/2024/09/msg00030.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://security.gentoo.org/glsa/202210-37", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://www.debian.org/security/2022/dsa-5285", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "[email protected]", "description": [{"lang": "en", "value": "CWE-191"}]}, {"type": "Primary", "source": "[email protected]", "description": [{"lang": "en", "value": "CWE-191"}]}], "descriptions": [{"lang": "en", "value": "PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In affected versions if the incoming STUN message contains an ERROR-CODE attribute, the header length is not checked before performing a subtraction operation, potentially resulting in an integer underflow scenario. This issue affects all users that use STUN. A malicious actor located within the victim\u2019s network may forge and send a specially crafted UDP (STUN) message that could remotely execute arbitrary code on the victim\u2019s machine. Users are advised to upgrade as soon as possible. There are no known workarounds."}, {"lang": "es", "value": "PJSIP es una biblioteca de comunicaci\u00f3n multimedia gratuita y de c\u00f3digo abierto escrita en lenguaje C que implementa protocolos basados en est\u00e1ndares como SIP, SDP, RTP, STUN, TURN e ICE. En las versiones afectadas, si el mensaje STUN entrante contiene un atributo ERROR-CODE, no se comprueba la longitud del encabezado antes de llevar a cabo una operaci\u00f3n de sustracci\u00f3n, resultando en un escenario de desbordamiento de enteros. Este problema afecta a todos los usuarios que usan STUN. Un actor malicioso situado en la red de la v\u00edctima puede falsificar y enviar un mensaje UDP (STUN) especialmente dise\u00f1ado que podr\u00eda ejecutar remotamente c\u00f3digo arbitrario en la m\u00e1quina de la v\u00edctima. Se aconseja a usuarios que actualicen lo antes posible. No se presentan soluciones conocidas"}], "lastModified": "2025-11-04T16:15:43.010", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:teluu:pjsip:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6BB0273A-3235-4BC7-A1BE-7D35BABD8617", "versionEndIncluding": "2.11.1"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:asterisk:certified_asterisk:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "02200524-98C1-49E2-8DFE-7BE82E1181E2", "versionEndExcluding": "16.8.0"}, {"criteria": "cpe:2.3:a:asterisk:certified_asterisk:16.8.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FC49FD2F-9A64-4F92-9B73-50E37BEB207E"}, {"criteria": "cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E64BCD44-2298-4710-9CC3-DF82E6A8DF94"}, {"criteria": "cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert10:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "91CCAB0C-C0F8-4619-AAE1-F6F13FF31570"}, {"criteria": "cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert11:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F2B7CBB3-E037-416B-AD16-9A553D6A4775"}, {"criteria": "cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert12:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DE7DDFE1-6A06-477A-AB45-D00053CFA7EC"}, {"criteria": "cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A35C117A-6EFB-42EB-AD2A-EA7866606927"}, {"criteria": "cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "40003CBE-792F-4875-9E60-6F1CE0BBAA8E"}, {"criteria": "cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "46A7AA7B-13F2-496A-99ED-1CC13234E8CB"}, {"criteria": "cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "147663CB-B48D-4D89-96BF-F92FF96F347F"}, {"criteria": "cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "27DBBC83-930A-4ECE-8C1E-47481D881B0D"}, {"criteria": "cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B987A13D-A363-4DCE-BBA1-E35E81ACBA60"}, {"criteria": "cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert8:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "01A5B7F9-FAD2-4C0C-937D-CF1086512130"}, {"criteria": "cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert9:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F60B4271-F987-4932-86EE-45ED099661E1"}, {"criteria": "cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DE99C3B4-20EC-4AC8-9A0A-C690E2DBED99", "versionEndExcluding": "16.24.1", "versionStartIncluding": "16.0.0"}, {"criteria": "cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C109B569-DE0D-4AE4-A128-239077CCC05F", "versionEndExcluding": "18.10.1", "versionStartIncluding": "18.0.0"}, {"criteria": "cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "44E4E3A7-8CB3-491C-98F6-F78345533E3B", "versionEndExcluding": "19.2.1", "versionStartIncluding": "19.0.0"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252"}, {"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73"}], "operator": "OR"}]}], "sourceIdentifier": "[email protected]"}