CVE-2020-8897

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://aws.amazon.com/blogs/security/improved-client-side-encryption-explicit-keyids-and-key-commitment/", "name": "https://aws.amazon.com/blogs/security/improved-client-side-encryption-explicit-keyids-and-key-commitment/", "tags": ["Vendor Advisory"], "refsource": "CONFIRM"}, {"url": "https://github.com/google/security-research/security/advisories/GHSA-wqgp-vphw-hphf", "name": "https://github.com/google/security-research/security/advisories/GHSA-wqgp-vphw-hphf", "tags": ["Exploit", "Mitigation", "Third Party Advisory"], "refsource": "CONFIRM"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "A weak robustness vulnerability exists in the AWS Encryption SDKs for Java, Python, C and Javalcript prior to versions 2.0.0. Due to the non-committing property of AES-GCM (and other AEAD ciphers such as AES-GCM-SIV or (X)ChaCha20Poly1305) used by the SDKs to encrypt messages, an attacker can craft a unique cyphertext which will decrypt to multiple different results, and becomes especially relevant in a multi-recipient setting. We recommend users update their SDK to 2.0.0 or later."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-327"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2020-8897", "ASSIGNER": "security@google.com"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 5.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:N", "authentication": "SINGLE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "severity": "MEDIUM", "acInsufInfo": false, "impactScore": 4.9, "obtainAllPrivilege": false, "exploitabilityScore": 8.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.1, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 2.8}}, "publishedDate": "2020-11-16T12:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:amazon:aws_encryption_sdk:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "2.0.0"}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2020-12-02T16:06Z"}