{"dataType": "CVE_RECORD", "dataVersion": "5.0", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2021-37706", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "dateUpdated": "2023-08-30T00:06:40.686220", "dateReserved": "2021-07-29T00:00:00", "datePublished": "2021-12-22T00:00:00"}, "containers": {"cna": {"title": "Potential integer underflow upon receiving STUN message in PJSIP", "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2023-08-30T00:06:40.686220"}, "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."}], "affected": [{"vendor": "pjsip", "product": "pjproject", "versions": [{"version": "<= 2.11.1", "status": "affected"}]}], "references": [{"url": "https://github.com/pjsip/pjproject/security/advisories/GHSA-2qpg-f6wf-w984"}, {"url": "https://github.com/pjsip/pjproject/commit/15663e3f37091069b8c98a7fce680dc04bc8e865"}, {"name": "20220304 AST-2022-004: pjproject: integer underflow on STUN message", "tags": ["mailing-list"], "url": "http://seclists.org/fulldisclosure/2022/Mar/0"}, {"url": "http://packetstormsecurity.com/files/166225/Asterisk-Project-Security-Advisory-AST-2022-004.html"}, {"name": "[debian-lts-announce] 20220328 [SECURITY] [DLA 2962-1] pjproject security update", "tags": ["mailing-list"], "url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html"}, {"name": "GLSA-202210-37", "tags": ["vendor-advisory"], "url": "https://security.gentoo.org/glsa/202210-37"}, {"name": "[debian-lts-announce] 20221117 [SECURITY] [DLA 3194-1] asterisk security update", "tags": ["mailing-list"], "url": "https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html"}, {"name": "DSA-5285", "tags": ["vendor-advisory"], "url": "https://www.debian.org/security/2022/dsa-5285"}, {"name": "[debian-lts-announce] 20230829 [SECURITY] [DLA 3549-1] ring security update", "tags": ["mailing-list"], "url": "https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html"}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW", "baseScore": 7.3, "baseSeverity": "HIGH"}}], "problemTypes": [{"descriptions": [{"type": "CWE", "lang": "en", "description": "CWE-191: Integer Underflow (Wrap or Wraparound)", "cweId": "CWE-191"}]}], "source": {"advisory": "GHSA-2qpg-f6wf-w984", "discovery": "UNKNOWN"}}}}

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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. 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No se presentan soluciones conocidas"}], "id": "CVE-2021-37706", "lastModified": "2023-08-30T01:15:28.083", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 9.3, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 7.3, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.4, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2021-12-22T18:15:07.487", "references": [{"source": "security-advisories@github.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://packetstormsecurity.com/files/166225/Asterisk-Project-Security-Advisory-AST-2022-004.html"}, {"source": "security-advisories@github.com", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "url": "http://seclists.org/fulldisclosure/2022/Mar/0"}, {"source": "security-advisories@github.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/pjsip/pjproject/commit/15663e3f37091069b8c98a7fce680dc04bc8e865"}, {"source": "security-advisories@github.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/pjsip/pjproject/security/advisories/GHSA-2qpg-f6wf-w984"}, {"source": "security-advisories@github.com", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html"}, {"source": "security-advisories@github.com", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html"}, {"source": "security-advisories@github.com", "url": "https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html"}, {"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202210-37"}, {"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2022/dsa-5285"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-191"}], "source": "security-advisories@github.com", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-191"}], "source": "nvd@nist.gov", "type": "Secondary"}]}

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