CVE-2020-6831

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{"affected": [{"affectedData": [{"product": "Firefox ESR", "vendor": "Mozilla", "versions": [{"lessThan": "68.8", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "Firefox", "vendor": "Mozilla", "versions": [{"lessThan": "76", "status": "affected", "version": "unspecified", "versionType": "custom"}]}, {"product": "Thunderbird", "vendor": "Mozilla", "versions": [{"lessThan": "68.8.0", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "source": "security@mozilla.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*", "matchCriteriaId": "5D1E5067-8D55-4C70-B5D2-31BAB1D22F50", "versionEndExcluding": "76.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*", "matchCriteriaId": "B606E5B1-C0CA-4673-9FBA-59E0C869F2C4", "versionEndExcluding": "68.8.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*", "matchCriteriaId": "E93B3D35-5D8E-4583-922F-D391CB7B992D", "versionEndExcluding": "68.8.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*", "matchCriteriaId": "F7016A2A-8365-4F1A-89A2-7A19F2BCAE5B", "vulnerable": true}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*", "matchCriteriaId": "23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D", "vulnerable": true}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*", "matchCriteriaId": "A31C8344-3E02-4EB8-8BD8-4C84B7959624", "vulnerable": true}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*", "matchCriteriaId": "902B8056-9E37-443B-8905-8AA93E2447FB", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252", "vulnerable": true}, {"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*", "matchCriteriaId": "B009C22E-30A4-4288-BCF6-C3E81DEAF45A", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A buffer overflow could occur when parsing and validating SCTP chunks in WebRTC. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0."}, {"lang": "es", "value": "Podr\u00eda presentarse un desbordamiento del b\u00fafer cuando se analizan y comprueban fragmentos SCTP en WebRTC. Esto podr\u00eda haber provocado una corrupci\u00f3n en la memoria y un bloqueo potencialmente explotable. Esta vulnerabilidad afecta a Firefox ESR versiones anteriores a 68.8, Firefox versiones anteriores a 76 y Thunderbird versiones anteriores a 68.8.0."}], "id": "CVE-2020-6831", "lastModified": "2026-06-17T03:23:53.177", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 7.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.4, "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"}]}, "published": "2020-05-26T18:15:11.513", "references": [{"source": "security@mozilla.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00000.html"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://packetstormsecurity.com/files/158480/usrsctp-Stack-Buffer-Overflow.html"}, {"source": "security@mozilla.org", "tags": ["Permissions Required"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1632241"}, {"source": "security@mozilla.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202005-03"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202005-04"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory"], "url": "https://usn.ubuntu.com/4373-1/"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2020/dsa-4714"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2020-16/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2020-17/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2020-18/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00000.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://packetstormsecurity.com/files/158480/usrsctp-Stack-Buffer-Overflow.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Permissions Required"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1632241"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202005-03"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202005-04"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://usn.ubuntu.com/4373-1/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2020/dsa-4714"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2020-16/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2020-17/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2020-18/"}], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Natalie Silvanovich (Google Project Zero) as the original reporter.", "affected_release": [{"advisory": "RHSA-2020:2036", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "firefox-0:68.8.0-1.el6_10", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2020-05-06T00:00:00Z"}, {"advisory": "RHSA-2020:2049", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "thunderbird-0:68.8.0-1.el6_10", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2020-05-11T00:00:00Z"}, {"advisory": "RHSA-2020:2064", "cpe": "cpe:/a:redhat:rhel_extras:6", "package": "chromium-browser-0:81.0.4044.138-1.el6_10", "product_name": "Red Hat Enterprise Linux 6 Supplementary", "release_date": "2020-05-11T00:00:00Z"}, {"advisory": "RHSA-2020:2037", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "firefox-0:68.8.0-1.el7_8", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2020-05-06T00:00:00Z"}, {"advisory": "RHSA-2020:2050", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "thunderbird-0:68.8.0-1.el7_8", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2020-05-11T00:00:00Z"}, {"advisory": "RHSA-2020:2031", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "firefox-0:68.8.0-1.el8_2", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2020-05-06T00:00:00Z"}, {"advisory": "RHSA-2020:2046", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "thunderbird-0:68.8.0-1.el8_2", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2020-05-11T00:00:00Z"}, {"advisory": "RHSA-2020:2033", "cpe": "cpe:/a:redhat:rhel_e4s:8.0", "package": "firefox-0:68.8.0-1.el8_0", "product_name": "Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions", "release_date": "2020-05-06T00:00:00Z"}, {"advisory": "RHSA-2020:2048", "cpe": "cpe:/a:redhat:rhel_e4s:8.0", "package": "thunderbird-0:68.8.0-1.el8_0", "product_name": "Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions", "release_date": "2020-05-11T00:00:00Z"}, {"advisory": "RHSA-2020:2032", "cpe": "cpe:/a:redhat:rhel_eus:8.1", "package": "firefox-0:68.8.0-1.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2020-05-06T00:00:00Z"}, {"advisory": "RHSA-2020:2047", "cpe": "cpe:/a:redhat:rhel_eus:8.1", "package": "thunderbird-0:68.8.0-1.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2020-05-11T00:00:00Z"}], "bugzilla": {"description": "usrsctp: Buffer overflow in AUTH chunk input validation", "id": "1831763", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1831763"}, "csaw": false, "cvss3": {"cvss3_base_score": "9.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-120", "details": ["A buffer overflow could occur when parsing and validating SCTP chunks in WebRTC. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.", "A flaw was found in Mozilla Firefox and Thunderbird. When parsing and validating SCTP chunks in WebRTC a memory buffer overflow could occur leading to memory corruption and an exploitable crash. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability."], "name": "CVE-2020-6831", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Out of support scope", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Out of support scope", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 5"}], "public_date": "2020-05-05T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-6831\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-6831\nhttps://www.mozilla.org/en-US/security/advisories/mfsa2020-17/#CVE-2020-6831"], "threat_severity": "Important"}

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