CVE-2021-29986

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Other operating systems are unaffected.* This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91."}, {"lang": "es", "value": "Una supuesta condici\u00f3n de carrera cuando se llama a getaddrinfo que conllevaba a una corrupci\u00f3n de la memoria y un bloqueo potencialmente explotable. *Nota: Este problema s\u00f3lo afectaba a los sistemas operativos Linux. Esta vulnerabilidad afecta a Thunderbird versiones anteriores a 78.13, Thunderbird versiones anteriores a 91, Firefox ESR versiones anteriores a 78.13 y Firefox versiones anteriores a 91."}], "id": "CVE-2021-29986", "lastModified": "2026-06-17T03:48:33.650", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 6.8, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-08-17T20:15:07.933", "references": [{"source": "security@mozilla.org", "tags": ["Exploit", "Issue Tracking", "Vendor Advisory"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1696138"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202202-03"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202208-14"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-33/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-34/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-35/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-36/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Issue Tracking", "Vendor Advisory"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1696138"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202202-03"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202208-14"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-33/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-34/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-35/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-36/"}], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-362"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2021:3154", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "firefox-0:78.13.0-2.el7_9", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2021-08-16T00:00:00Z"}, {"advisory": "RHSA-2021:3160", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "thunderbird-0:78.13.0-1.el7_9", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2021-08-16T00:00:00Z"}, {"advisory": "RHSA-2021:3155", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "thunderbird-0:78.13.0-1.el8_4", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-08-16T00:00:00Z"}, {"advisory": "RHSA-2021:3157", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "firefox-0:78.13.0-2.el8_4", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-08-16T00:00:00Z"}, {"advisory": "RHSA-2021:3159", "cpe": "cpe:/a:redhat:rhel_eus:8.1", "package": "firefox-0:78.13.0-2.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2021-08-16T00:00:00Z"}, {"advisory": "RHSA-2021:3161", "cpe": "cpe:/a:redhat:rhel_eus:8.1", "package": "thunderbird-0:78.13.0-1.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2021-08-16T00:00:00Z"}, {"advisory": "RHSA-2021:3156", "cpe": "cpe:/a:redhat:rhel_eus:8.2", "package": "firefox-0:78.13.0-2.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2021-08-16T00:00:00Z"}, {"advisory": "RHSA-2021:3162", "cpe": "cpe:/a:redhat:rhel_eus:8.2", "package": "thunderbird-0:78.13.0-1.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2021-08-16T00:00:00Z"}], "bugzilla": {"description": "Mozilla: Race condition when resolving DNS names could have led to memory corruption", "id": "1992417", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1992417"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-367", "details": ["A suspected race condition when calling getaddrinfo led to memory corruption and a potentially exploitable crash. *Note: This issue only affected Linux operating systems. Other operating systems are unaffected.* This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91."], "name": "CVE-2021-29986", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 6"}], "public_date": "2021-08-10T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-29986\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-29986"], "threat_severity": "Important"}

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