GSD-2020-8897

Vulnerability from gsd - Updated: 2023-12-13 01:21
Details
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.
Aliases
Aliases
CVE-2020-8897
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{
  "GSD": {
    "alias": "CVE-2020-8897",
    "description": "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.",
    "id": "GSD-2020-8897"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-8897"
      ],
      "details": "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.",
      "id": "GSD-2020-8897",
      "modified": "2023-12-13T01:21:54.280120Z",
      "schema_version": "1.4.0"
    }
  },
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        "ID": "CVE-2020-8897",
        "STATE": "PUBLIC",
        "TITLE": "Robustness weakness in AWS KMS and Encryption SDKs"
      },
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      "impact": {
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          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.8,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N",
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          {
            "description": [
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                "lang": "eng",
                "value": "CWE-310 Cryptographic Issues"
              }
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        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/google/security-research/security/advisories/GHSA-wqgp-vphw-hphf",
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          },
          {
            "name": "https://aws.amazon.com/blogs/security/improved-client-side-encryption-explicit-keyids-and-key-commitment/",
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            "url": "https://aws.amazon.com/blogs/security/improved-client-side-encryption-explicit-keyids-and-key-commitment/"
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      "source": {
        "discovery": "EXTERNAL"
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "(,2.0.0)",
          "affected_versions": "All versions before 2.0.0",
          "cvss_v2": "AV:N/AC:L/Au:S/C:P/I:P/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-327",
            "CWE-937"
          ],
          "date": "2021-10-12",
          "description": "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.",
          "fixed_versions": [
            "2.0.0"
          ],
          "identifier": "CVE-2020-8897",
          "identifiers": [
            "GHSA-wqgp-vphw-hphf",
            "CVE-2020-8897"
          ],
          "not_impacted": "All versions starting from 2.0.0",
          "package_slug": "maven/com.amazonaws/aws-encryption-sdk-java",
          "pubdate": "2021-10-12",
          "solution": "Upgrade to version 2.0.0 or above.",
          "title": "Use of a Broken or Risky Cryptographic Algorithm",
          "urls": [
            "https://github.com/google/security-research/security/advisories/GHSA-wqgp-vphw-hphf",
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          ],
          "uuid": "b0040c69-02a9-4c4f-9061-d2c9e693ca44"
        },
        {
          "affected_range": "\u003c2.0.0",
          "affected_versions": "All versions before 2.0.0",
          "cvss_v2": "AV:N/AC:L/Au:S/C:P/I:P/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-327",
            "CWE-937"
          ],
          "date": "2021-10-12",
          "description": "A weak robustness vulnerability exists in the AWS Encryption SDKs for Java, Python, C and Javalcript 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 or later.",
          "fixed_versions": [
            "2.0.0"
          ],
          "identifier": "CVE-2020-8897",
          "identifiers": [
            "GHSA-wqgp-vphw-hphf",
            "CVE-2020-8897"
          ],
          "not_impacted": "All versions starting from 2.0.0",
          "package_slug": "pypi/aws-encryption-sdk",
          "pubdate": "2021-10-12",
          "solution": "Upgrade to version 2.0.0 or above.",
          "title": "Use of a Broken or Risky Cryptographic Algorithm",
          "urls": [
            "https://github.com/google/security-research/security/advisories/GHSA-wqgp-vphw-hphf",
            "https://nvd.nist.gov/vuln/detail/CVE-2020-8897",
            "https://aws.amazon.com/blogs/security/improved-client-side-encryption-explicit-keyids-and-key-commitment/",
            "https://github.com/advisories/GHSA-wqgp-vphw-hphf"
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          "uuid": "882b454f-fe7b-49d4-9779-bbf346536d00"
        }
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          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "NONE",
            "baseScore": 5.5,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 8.0,
          "impactScore": 4.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
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        },
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            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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          "exploitabilityScore": 2.8,
          "impactScore": 5.2
        }
      },
      "lastModifiedDate": "2020-12-02T16:06Z",
      "publishedDate": "2020-11-16T12:15Z"
    }
  }
}



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