{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-23T11:53:57.069","vulnerabilities":[{"cve":{"id":"CVE-2021-3716","sourceIdentifier":"secalert@redhat.com","published":"2022-03-02T23:15:09.013","lastModified":"2024-11-21T06:22:14.133","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"A flaw was found in nbdkit due to to improperly caching plaintext state across the STARTTLS encryption boundary. A MitM attacker could use this flaw to inject a plaintext NBD_OPT_STRUCTURED_REPLY before proxying everything else a client sends to the server, potentially leading the client to terminate the NBD session. The highest threat from this vulnerability is to system availability."},{"lang":"es","value":"Se ha encontrado un fallo en nbdkit debido al almacenamiento inapropiado en caché del estado de texto plano a través del límite de cifrado STARTTLS. Un atacante de tipo MitM podría usar este fallo para inyectar un texto plano NBD_OPT_STRUCTURED_REPLY antes de hacer proxy todo lo demás que un cliente envía al servidor, lo que podría conllevar a que el cliente termine la sesión NBD. La mayor amenaza de esta vulnerabilidad es la disponibilidad del sistema"}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L","baseScore":3.1,"baseSeverity":"LOW","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW"},"exploitabilityScore":1.6,"impactScore":1.4}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:M/Au:S/C:N/I:N/A:P","baseScore":3.5,"accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"SINGLE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL"},"baseSeverity":"LOW","exploitabilityScore":6.8,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"secalert@redhat.com","type":"Secondary","description":[{"lang":"en","value":"CWE-924"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"NVD-CWE-Other"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:nbdkit_project:nbdkit:*:*:*:*:*:*:*:*","versionStartIncluding":"1.11.8","versionEndExcluding":"1.24.6","matchCriteriaId":"6C81BB5D-5E76-4AB3-A288-ECE78DFC5EF7"},{"vulnerable":true,"criteria":"cpe:2.3:a:nbdkit_project:nbdkit:*:*:*:*:*:*:*:*","versionStartIncluding":"1.25.1","versionEndExcluding":"1.26.5","matchCriteriaId":"18CC5957-0C63-4B74-87B8-FA2FA295D9C9"},{"vulnerable":true,"criteria":"cpe:2.3:a:nbdkit_project:nbdkit:*:*:*:*:*:*:*:*","versionStartIncluding":"1.27.1","versionEndExcluding":"1.27.6","matchCriteriaId":"50D0C2C5-DE56-4295-80D5-D985775EBC2F"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:*","matchCriteriaId":"053C1B35-3869-41C2-9551-044182DE0A64"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:*","matchCriteriaId":"3AA08768-75AF-4791-B229-AE938C780959"}]}]}],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1994695","source":"secalert@redhat.com","tags":["Issue Tracking","Patch","Third Party Advisory"]},{"url":"https://gitlab.com/nbdkit/nbdkit/-/commit/09a13dafb7bb3a38ab52eb5501cba786365ba7fd","source":"secalert@redhat.com","tags":["Patch","Third Party Advisory"]},{"url":"https://gitlab.com/nbdkit/nbdkit/-/commit/6c5faac6a37077cf2366388a80862bb00616d0d8","source":"secalert@redhat.com","tags":["Patch","Third Party Advisory"]},{"url":"https://listman.redhat.com/archives/libguestfs/2021-August/msg00083.html","source":"secalert@redhat.com","tags":["Broken Link"]},{"url":"https://www.openwall.com/lists/oss-security/2021/08/18/2","source":"secalert@redhat.com","tags":["Mailing List","Third Party Advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1994695","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Issue Tracking","Patch","Third Party Advisory"]},{"url":"https://gitlab.com/nbdkit/nbdkit/-/commit/09a13dafb7bb3a38ab52eb5501cba786365ba7fd","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Third Party Advisory"]},{"url":"https://gitlab.com/nbdkit/nbdkit/-/commit/6c5faac6a37077cf2366388a80862bb00616d0d8","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Third Party Advisory"]},{"url":"https://listman.redhat.com/archives/libguestfs/2021-August/msg00083.html","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Broken Link"]},{"url":"https://www.openwall.com/lists/oss-security/2021/08/18/2","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List","Third Party Advisory"]}]}}]}