CVE-2020-8897GHSA-WQGP-VPHW-HPHFPYSEC-2020-261
Robustness weakness in AWS KMS and Encryption SDKs
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 2.0.0
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Amazon AWS SDK
From stable · fixed in 2.0.0
- com.amazonaws:aws-encryption-sdk-javaMaven
fixed in 2.0.0
- aws-encryption-sdkPyPI
fixed in 2.0.0
- aws-encryption-sdkPyPI
fixed in 2.0.0