fkie_cve-2020-24659
Vulnerability from fkie_nvd
Published
2020-09-04 15:15
Modified
2024-11-21 05:15
Severity ?
Summary
An issue was discovered in GnuTLS before 3.6.15. A server can trigger a NULL pointer dereference in a TLS 1.3 client if a no_renegotiation alert is sent with unexpected timing, and then an invalid second handshake occurs. The crash happens in the application's error handling path, where the gnutls_deinit function is called after detecting a handshake failure.
References
Impacted products
Vendor | Product | Version | |
---|---|---|---|
gnu | gnutls | * | |
fedoraproject | fedora | 32 | |
fedoraproject | fedora | 33 | |
opensuse | leap | 15.1 | |
opensuse | leap | 15.2 | |
canonical | ubuntu_linux | 20.04 |
{ configurations: [ { nodes: [ { cpeMatch: [ { criteria: "cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:*", matchCriteriaId: "3160C6D1-138F-42D8-832E-4C0EFE6A4A48", versionEndExcluding: "3.6.15", vulnerable: true, }, ], negate: false, operator: "OR", }, ], }, { nodes: [ { cpeMatch: [ { criteria: "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*", matchCriteriaId: "36D96259-24BD-44E2-96D9-78CE1D41F956", vulnerable: true, }, { criteria: "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*", matchCriteriaId: "E460AA51-FCDA-46B9-AE97-E6676AA5E194", vulnerable: true, }, ], negate: false, operator: "OR", }, ], }, { nodes: [ { cpeMatch: [ { criteria: "cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*", matchCriteriaId: "B620311B-34A3-48A6-82DF-6F078D7A4493", vulnerable: true, }, { criteria: "cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*", matchCriteriaId: "B009C22E-30A4-4288-BCF6-C3E81DEAF45A", vulnerable: true, }, ], negate: false, operator: "OR", }, ], }, { nodes: [ { cpeMatch: [ { criteria: "cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*", matchCriteriaId: "902B8056-9E37-443B-8905-8AA93E2447FB", vulnerable: true, }, ], negate: false, operator: "OR", }, ], }, ], cveTags: [], descriptions: [ { lang: "en", value: "An issue was discovered in GnuTLS before 3.6.15. A server can trigger a NULL pointer dereference in a TLS 1.3 client if a no_renegotiation alert is sent with unexpected timing, and then an invalid second handshake occurs. The crash happens in the application's error handling path, where the gnutls_deinit function is called after detecting a handshake failure.", }, { lang: "es", value: "Se detectó un problema en GnuTLS versiones anteriores a 3.6.15. Un servidor puede desencadenar una desreferencia del puntero NULL en un cliente TLS versión 1.3, si una alerta no_renegotiation es enviada con una sincronización no prevista y luego se produce un segundo protocolo de enlace no válido. El bloqueo ocurre en la ruta de manejo de errores de la aplicación, donde la función gnutls_deinit es llamada después de detectar un fallo en el protocolo de enlace", }, ], id: "CVE-2020-24659", lastModified: "2024-11-21T05:15:26.003", metrics: { cvssMetricV2: [ { acInsufInfo: false, baseSeverity: "MEDIUM", cvssData: { accessComplexity: "LOW", accessVector: "NETWORK", authentication: "NONE", availabilityImpact: "PARTIAL", baseScore: 5, confidentialityImpact: "NONE", integrityImpact: "NONE", vectorString: "AV:N/AC:L/Au:N/C:N/I:N/A:P", version: "2.0", }, exploitabilityScore: 10, impactScore: 2.9, obtainAllPrivilege: false, obtainOtherPrivilege: false, obtainUserPrivilege: false, source: "nvd@nist.gov", type: "Primary", userInteractionRequired: false, }, ], cvssMetricV31: [ { cvssData: { attackComplexity: "LOW", attackVector: "NETWORK", availabilityImpact: "HIGH", baseScore: 7.5, baseSeverity: "HIGH", confidentialityImpact: "NONE", integrityImpact: "NONE", privilegesRequired: "NONE", scope: "UNCHANGED", userInteraction: "NONE", vectorString: "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", version: "3.1", }, exploitabilityScore: 3.9, impactScore: 3.6, source: "nvd@nist.gov", type: "Primary", }, ], }, published: "2020-09-04T15:15:10.803", references: [ { source: "cve@mitre.org", tags: [ "Mailing List", "Third Party Advisory", ], url: "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00054.html", }, { source: "cve@mitre.org", tags: [ "Mailing List", "Third Party Advisory", ], url: "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00060.html", }, { source: "cve@mitre.org", tags: [ "Exploit", "Issue Tracking", "Third Party Advisory", ], url: "https://gitlab.com/gnutls/gnutls/-/issues/1071", }, { source: "cve@mitre.org", url: "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/62BUAI4FQQLG6VTKRT7SUZPGJJ4NASQ3/", }, { source: "cve@mitre.org", url: "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AWN56FDLQQXT2D2YHNI4TYH432TDMQ7N/", }, { source: "cve@mitre.org", tags: [ "Third Party Advisory", ], url: "https://security.gentoo.org/glsa/202009-01", }, { source: "cve@mitre.org", tags: [ "Third Party Advisory", ], url: "https://security.netapp.com/advisory/ntap-20200911-0006/", }, { source: "cve@mitre.org", tags: [ "Third Party Advisory", ], url: "https://usn.ubuntu.com/4491-1/", }, { source: "cve@mitre.org", tags: [ "Vendor Advisory", ], url: "https://www.gnutls.org/security-new.html#GNUTLS-SA-2020-09-04", }, { source: "af854a3a-2127-422b-91ae-364da2661108", tags: [ "Mailing List", "Third Party Advisory", ], url: "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00054.html", }, { source: "af854a3a-2127-422b-91ae-364da2661108", tags: [ "Mailing List", "Third Party Advisory", ], url: "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00060.html", }, { source: "af854a3a-2127-422b-91ae-364da2661108", tags: [ "Exploit", "Issue Tracking", "Third Party Advisory", ], url: "https://gitlab.com/gnutls/gnutls/-/issues/1071", }, { source: "af854a3a-2127-422b-91ae-364da2661108", url: "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/62BUAI4FQQLG6VTKRT7SUZPGJJ4NASQ3/", }, { source: "af854a3a-2127-422b-91ae-364da2661108", url: "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AWN56FDLQQXT2D2YHNI4TYH432TDMQ7N/", }, { source: "af854a3a-2127-422b-91ae-364da2661108", tags: [ "Third Party Advisory", ], url: "https://security.gentoo.org/glsa/202009-01", }, { source: "af854a3a-2127-422b-91ae-364da2661108", tags: [ "Third Party Advisory", ], url: "https://security.netapp.com/advisory/ntap-20200911-0006/", }, { source: "af854a3a-2127-422b-91ae-364da2661108", tags: [ "Third Party Advisory", ], url: "https://usn.ubuntu.com/4491-1/", }, { source: "af854a3a-2127-422b-91ae-364da2661108", tags: [ "Vendor Advisory", ], url: "https://www.gnutls.org/security-new.html#GNUTLS-SA-2020-09-04", }, ], sourceIdentifier: "cve@mitre.org", vulnStatus: "Modified", weaknesses: [ { description: [ { lang: "en", value: "CWE-476", }, { lang: "en", value: "CWE-787", }, ], source: "nvd@nist.gov", type: "Primary", }, ], }
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Sightings
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Nomenclature
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