CVE-2021-43398

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://github.com/weidai11/cryptopp/issues/1080", "name": "https://github.com/weidai11/cryptopp/issues/1080", "tags": ["Exploit", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://cryptopp.com", "name": "https://cryptopp.com", "tags": ["Vendor Advisory"], "refsource": "MISC"}, {"url": "https://github.com/weidai11/cryptopp/issues/1080#issuecomment-996492222", "name": "https://github.com/weidai11/cryptopp/issues/1080#issuecomment-996492222", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "refsource": "MISC"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "** DISPUTED ** Crypto++ (aka Cryptopp) 8.6.0 and earlier contains a timing leakage in MakePublicKey(). There is a clear correlation between execution time and private key length, which may cause disclosure of the length information of the private key. This might allow attackers to conduct timing attacks. NOTE: this report is disputed by the vendor and multiple third parties. The execution-time differences are intentional. A user may make a choice of a longer key as a tradeoff between strength and performance. In making this choice, the amount of information leaked to an adversary is of infinitesimal value."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-203"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2021-43398", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "severity": "MEDIUM", "acInsufInfo": false, "impactScore": 2.9, "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 3.9}}, "publishedDate": "2021-11-04T21:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:cryptopp:crypto\\+\\+:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndIncluding": "8.6.0"}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2022-04-18T18:03Z"}