All the vulnerabilites related to Google LLC - AWS S3 Crypto SDK for GoLang
cve-2020-8912
Vulnerability from cvelistv5
Published
2020-08-11 19:20
Modified
2024-08-04 10:12
Severity ?
EPSS score ?
Summary
In-band key negotiation issue in AWS S3 Crypto SDK for GoLang
References
▼ | URL | Tags |
---|---|---|
https://aws.amazon.com/blogs/developer/updates-to-the-amazon-s3-encryption-client/?s=09 | x_refsource_CONFIRM | |
https://github.com/google/security-research/security/advisories/GHSA-7f33-f4f5-xwgw | x_refsource_CONFIRM |
Impacted products
▼ | Vendor | Product |
---|---|---|
Google LLC | AWS S3 Crypto SDK for GoLang |
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An attacker with write access to the targeted bucket can change the encryption algorithm of an object in the bucket, which can then allow them to change AES-GCM to AES-CTR. Using this in combination with a decryption oracle can reveal the authentication key used by AES-GCM as decrypting the GMAC tag leaves the authentication key recoverable as an algebraic equation. It is recommended to update your SDK to V2 or later, and re-encrypt your files." } ], "metrics": [ { "cvssV3_1": { "attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 2.5, "baseSeverity": "LOW", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N", "version": "3.1" } } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-327", "description": "CWE-327 Use of a Broken or Risky Cryptographic Algorithm", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "dateUpdated": "2020-08-11T19:20:14", "orgId": "14ed7db2-1595-443d-9d34-6215bf890778", "shortName": "Google" }, "references": [ { "tags": [ "x_refsource_CONFIRM" ], "url": "https://aws.amazon.com/blogs/developer/updates-to-the-amazon-s3-encryption-client/?s=09" }, { "tags": [ "x_refsource_CONFIRM" ], "url": "https://github.com/google/security-research/security/advisories/GHSA-7f33-f4f5-xwgw" } ], "source": { "discovery": "EXTERNAL" }, "title": "In-band key negotiation issue in AWS S3 Crypto SDK for GoLang", "x_generator": { "engine": "Vulnogram 0.0.9" }, "x_legacyV4Record": { "CVE_data_meta": { "ASSIGNER": "security@google.com", "ID": "CVE-2020-8912", "STATE": "PUBLIC", "TITLE": "In-band key negotiation issue in AWS S3 Crypto SDK for GoLang" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "AWS S3 Crypto SDK for GoLang", "version": { "version_data": [ { "version_affected": "\u003c=", "version_name": "stable", "version_value": "V1" } ] } } ] }, "vendor_name": "Google LLC" } ] } }, "credit": [ { "lang": "eng", "value": "Sophie Schmieg" } ], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "A vulnerability in the in-band key negotiation exists in the AWS S3 Crypto SDK for GoLang versions prior to V2. An attacker with write access to the targeted bucket can change the encryption algorithm of an object in the bucket, which can then allow them to change AES-GCM to AES-CTR. Using this in combination with a decryption oracle can reveal the authentication key used by AES-GCM as decrypting the GMAC tag leaves the authentication key recoverable as an algebraic equation. It is recommended to update your SDK to V2 or later, and re-encrypt your files." } ] }, "generator": { "engine": "Vulnogram 0.0.9" }, "impact": { "cvss": { "attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 2.5, "baseSeverity": "LOW", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N", "version": "3.1" } }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "CWE-327 Use of a Broken or Risky Cryptographic Algorithm" } ] } ] }, "references": { "reference_data": [ { "name": "https://aws.amazon.com/blogs/developer/updates-to-the-amazon-s3-encryption-client/?s=09", "refsource": "CONFIRM", "url": "https://aws.amazon.com/blogs/developer/updates-to-the-amazon-s3-encryption-client/?s=09" }, { "name": "https://github.com/google/security-research/security/advisories/GHSA-7f33-f4f5-xwgw", "refsource": "CONFIRM", "url": "https://github.com/google/security-research/security/advisories/GHSA-7f33-f4f5-xwgw" } ] }, "source": { "discovery": "EXTERNAL" } } } }, "cveMetadata": { "assignerOrgId": "14ed7db2-1595-443d-9d34-6215bf890778", "assignerShortName": "Google", "cveId": "CVE-2020-8912", "datePublished": "2020-08-11T19:20:14", "dateReserved": "2020-02-12T00:00:00", "dateUpdated": "2024-08-04T10:12:10.969Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1" }
cve-2020-8911
Vulnerability from cvelistv5
Published
2020-08-11 19:20
Modified
2024-08-04 10:12
Severity ?
EPSS score ?
Summary
CBC padding oracle in AWS S3 Crypto SDK for GoLang
References
▼ | URL | Tags |
---|---|---|
https://aws.amazon.com/blogs/developer/updates-to-the-amazon-s3-encryption-client/?s=09 | x_refsource_CONFIRM | |
https://github.com/google/security-research/security/advisories/GHSA-f5pg-7wfw-84q9 | x_refsource_CONFIRM |
Impacted products
▼ | Vendor | Product |
---|---|---|
Google LLC | AWS S3 Crypto SDK for GoLang |
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The SDK allows users to encrypt files with AES-CBC without computing a Message Authentication Code (MAC), which then allows an attacker who has write access to the target\u0027s S3 bucket and can observe whether or not an endpoint with access to the key can decrypt a file, they can reconstruct the plaintext with (on average) 128*length (plaintext) queries to the endpoint, by exploiting CBC\u0027s ability to manipulate the bytes of the next block and PKCS5 padding errors. It is recommended to update your SDK to V2 or later, and re-encrypt your files." } ], "metrics": [ { "cvssV3_1": { "attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 5.6, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N", "version": "3.1" } } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-327", "description": "CWE-327 Use of a Broken or Risky Cryptographic Algorithm", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "dateUpdated": "2020-08-11T19:20:13", "orgId": "14ed7db2-1595-443d-9d34-6215bf890778", "shortName": "Google" }, "references": [ { "tags": [ "x_refsource_CONFIRM" ], "url": "https://aws.amazon.com/blogs/developer/updates-to-the-amazon-s3-encryption-client/?s=09" }, { "tags": [ "x_refsource_CONFIRM" ], "url": "https://github.com/google/security-research/security/advisories/GHSA-f5pg-7wfw-84q9" } ], "source": { "discovery": "EXTERNAL" }, "title": "CBC padding oracle in AWS S3 Crypto SDK for GoLang", "x_generator": { "engine": "Vulnogram 0.0.9" }, "x_legacyV4Record": { "CVE_data_meta": { "ASSIGNER": "security@google.com", "ID": "CVE-2020-8911", "STATE": "PUBLIC", "TITLE": "CBC padding oracle in AWS S3 Crypto SDK for GoLang" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "AWS S3 Crypto SDK for GoLang", "version": { "version_data": [ { "version_affected": "\u003c=", "version_name": "stable", "version_value": "V1" } ] } } ] }, "vendor_name": "Google LLC" } ] } }, "credit": [ { "lang": "eng", "value": "Sophie Schmieg" } ], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "A padding oracle vulnerability exists in the AWS S3 Crypto SDK for GoLang versions prior to V2. The SDK allows users to encrypt files with AES-CBC without computing a Message Authentication Code (MAC), which then allows an attacker who has write access to the target\u0027s S3 bucket and can observe whether or not an endpoint with access to the key can decrypt a file, they can reconstruct the plaintext with (on average) 128*length (plaintext) queries to the endpoint, by exploiting CBC\u0027s ability to manipulate the bytes of the next block and PKCS5 padding errors. It is recommended to update your SDK to V2 or later, and re-encrypt your files." } ] }, "generator": { "engine": "Vulnogram 0.0.9" }, "impact": { "cvss": { "attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N", "version": "3.1" } }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "CWE-327 Use of a Broken or Risky Cryptographic Algorithm" } ] } ] }, "references": { "reference_data": [ { "name": "https://aws.amazon.com/blogs/developer/updates-to-the-amazon-s3-encryption-client/?s=09", "refsource": "CONFIRM", "url": "https://aws.amazon.com/blogs/developer/updates-to-the-amazon-s3-encryption-client/?s=09" }, { "name": "https://github.com/google/security-research/security/advisories/GHSA-f5pg-7wfw-84q9", "refsource": "CONFIRM", "url": "https://github.com/google/security-research/security/advisories/GHSA-f5pg-7wfw-84q9" } ] }, "source": { "discovery": "EXTERNAL" } } } }, "cveMetadata": { "assignerOrgId": "14ed7db2-1595-443d-9d34-6215bf890778", "assignerShortName": "Google", "cveId": "CVE-2020-8911", "datePublished": "2020-08-11T19:20:14", "dateReserved": "2020-02-12T00:00:00", "dateUpdated": "2024-08-04T10:12:11.063Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1" }