CVE-2020-8897

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Summary

CVECVE-2020-8897
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-11-16 12:15:00 UTC
Updated2020-12-02 16:06:00 UTC
DescriptionA 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.

Risk And Classification

Problem Types: CWE-327

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Amazon Aws Encryption Sdk All All All All
Application Amazon Aws Encryption Sdk All All All All

References

ReferenceSourceLinkTags
Improved client-side encryption: Explicit KeyIds and key commitment | AWS Security Blog CONFIRM aws.amazon.com Vendor Advisory
AWS: In-band protocol negotiation and robustness weaknesses in AWS KMS and Encryption SDKs · Advisory · google/security-research · GitHub CONFIRM github.com Exploit, Mitigation, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

LEGACY: Thai Duong

Legacy QID Mappings

  • 980453 Python (pip) Security Update for aws-encryption-sdk (GHSA-wqgp-vphw-hphf)
  • 980454 Java (maven) Security Update for com.amazonaws:aws-encryption-sdk-java (GHSA-wqgp-vphw-hphf)

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