Use of a Broken or Risky Cryptographic Algorithm

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 XChaCha20Poly1305 used by the SDKs to encrypt messages, an attacker can craft a...

GHSA-X5H4-9GQW-942J Improper Verification of Cryptographic Signature in aws-encryption-sdk

Impact This advisory addresses several LOW severity issues with streaming signed messages and restricting processing of certain types of invalid messages. This ESDK supports a streaming mode where callers may stream the plaintext of signed messages before the ECDSA signature is validated. In...

Improper Verification of Cryptographic Signature in aws-encryption-sdk-java

Impact This advisory addresses several LOW severity issues with streaming signed messages and restricting processing of certain types of invalid messages. This update addresses an issue where certain invalid ECDSA signatures incorrectly passed validation. These signatures provide defense in depth...

GHSA-55XH-53M6-936R Improper Verification of Cryptographic Signature in aws-encryption-sdk-java

Impact This advisory addresses several LOW severity issues with streaming signed messages and restricting processing of certain types of invalid messages. This update addresses an issue where certain invalid ECDSA signatures incorrectly passed validation. These signatures provide defense in depth...

Improper Verification of Cryptographic Signature in aws-encryption-sdk-javascript

This ESDK supports a streaming mode where callers may stream the plaintext of signed messages before the ECDSA signature is validated. In addition to these signatures, the ESDK uses AES-GCM encryption and all plaintext is verified before being released to a caller. There is no impact on the...

Improper Verification of Cryptographic Signature in aws-encryption-sdk-java

This advisory addresses several LOW severity issues with streaming signed messages and restricting processing of certain types of invalid messages...

Improper Verification of Cryptographic Signature in aws-encryption-sdk-javascript

This advisory addresses several LOW severity issues with streaming signed messages and restricting processing of certain types of invalid messages. This ESDK supports a streaming mode where callers may stream the plaintext of signed messages before the ECDSA signature is validated...

CVE-2020-8897

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 XChaCha20Poly1305 used by the SDKs to encrypt messages, an attacker can craft a...

Design/Logic Flaw

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 XChaCha20Poly1305 used by the SDKs to encrypt messages, an attacker can craft a...

CVE-2020-8897

CVE-2020-8897 : A weak robustness vulnerability affects the AWS Encryption SDKs for Java, Python, C and Javalcript prior to 2.0.0. The non-committing property of AES-GCM (and related AEAD ciphers) can let an attacker craft a unique ciphertext that decrypts to multiple different results, which is ...

Insecure Access Controls

awsencryptionsdkcli does correctly enforce strict mode. The application operates in discovery mode even when strict mode is specified, allowing various operations within the package which would otherwise be restricted...

CLI does not correctly implement strict mode

In the affected versions, the AWS Encryption CLI operated in "discovery mode" even when "strict mode" was specified. Although decryption only succeeded if the user had permission to decrypt with at least one of the CMKs, decryption could be successful using a CMK that was not included in the...

GHSA-2XWP-M7MQ-7Q3R CLI does not correctly implement strict mode

In the affected versions, the AWS Encryption CLI operated in "discovery mode" even when "strict mode" was specified. Although decryption only succeeded if the user had permission to decrypt with at least one of the CMKs, decryption could be successful using a CMK that was not included in the...