{ "id": "CVE-2021-33560", "sourceIdentifier": "cve@mitre.org", "published": "2021-06-08T11:15:07.767", "lastModified": "2022-12-07T01:20:42.797", "vulnStatus": "Analyzed", "descriptions": [ { "lang": "en", "value": "Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attack against mpi_powm, and the window size is not chosen appropriately. This, for example, affects use of ElGamal in OpenPGP." }, { "lang": "es", "value": "Libgcrypt versiones anteriores a 1.8.8 y versiones 1.9.x anteriores a 1.9.3, maneja inapropiadamente el cifrado de ElGamal porque carece de cegado de exponentes para hacer frente a un ataque de canal lateral contra la funci\u00f3n mpi_powm, y el tama\u00f1o de la ventana no se elige apropiadamente. Esto, por ejemplo, afecta el uso de ElGamal en OpenPGP." } ], "metrics": { "cvssMetricV31": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH" }, "exploitabilityScore": 3.9, "impactScore": 3.6 } ], "cvssMetricV2": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "2.0", "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N", "accessVector": "NETWORK", "accessComplexity": "LOW", "authentication": "NONE", "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "availabilityImpact": "NONE", "baseScore": 5.0 }, "baseSeverity": "MEDIUM", "exploitabilityScore": 10.0, "impactScore": 2.9, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false } ] }, "weaknesses": [ { "source": "nvd@nist.gov", "type": "Primary", "description": [ { "lang": "en", "value": "CWE-203" } ] } ], "configurations": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.8.8", "matchCriteriaId": "62143F8E-223E-44EF-A409-524C0EE4F910" }, { "vulnerable": true, "criteria": "cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:*", "versionStartIncluding": "1.9.0", "versionEndExcluding": "1.9.3", "matchCriteriaId": "492FE6EB-BD5E-4FEC-9C43-8A67C659C948" } ] } ] }, { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252" } ] } ] }, { "nodes": [ { "operator": "OR", "negate": false, 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"references": [ { "url": "https://dev.gnupg.org/T5305", "source": "cve@mitre.org", "tags": [ "Release Notes", "Vendor Advisory" ] }, { "url": "https://dev.gnupg.org/T5328", "source": "cve@mitre.org", "tags": [ "Vendor Advisory" ] }, { "url": "https://dev.gnupg.org/T5466", "source": "cve@mitre.org", "tags": [ "Release Notes", "Vendor Advisory" ] }, { "url": "https://dev.gnupg.org/rCe8b7f10be275bcedb5fc05ed4837a89bfd605c61", "source": "cve@mitre.org", "tags": [ "Patch", "Vendor Advisory" ] }, { "url": "https://lists.debian.org/debian-lts-announce/2021/06/msg00021.html", "source": "cve@mitre.org", "tags": [ "Mailing List", "Third Party Advisory" ] }, { "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BKKTOIGFW2SGN3DO2UHHVZ7MJSYN4AAB/", "source": "cve@mitre.org", "tags": [ "Mailing List", "Third Party Advisory" ] }, { "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R7OAPCUGPF3VLA7QAJUQSL255D4ITVTL/", "source": "cve@mitre.org", "tags": [ "Mailing List", "Third Party Advisory" ] }, { "url": "https://security.gentoo.org/glsa/202210-13", "source": "cve@mitre.org", "tags": [ "Third Party Advisory" ] }, { "url": "https://www.oracle.com/security-alerts/cpuapr2022.html", "source": "cve@mitre.org", "tags": [ "Patch", "Third Party Advisory" ] }, { "url": "https://www.oracle.com/security-alerts/cpujan2022.html", "source": "cve@mitre.org", "tags": [ "Patch", "Third Party Advisory" ] }, { "url": "https://www.oracle.com/security-alerts/cpujul2022.html", "source": "cve@mitre.org", "tags": [ "Patch", "Third Party Advisory" ] }, { "url": "https://www.oracle.com/security-alerts/cpuoct2021.html", "source": "cve@mitre.org", "tags": [ "Third Party Advisory" ] } ] }