A mis-handling of invalid unicode characters in the Java implementation of Tink versions prior to 1.5 allows an attacker to change the ID part of a ciphertext, which result in the creation of a second ciphertext that can decrypt to the same plaintext. This can be a problem with encrypting deterministic AEAD with a single key, and rely on a unique ciphertext-per-plaintext.
History

No history.

cve-icon MITRE Information

Status: PUBLISHED

Assigner: Google

Published: 2020-10-19T12:15:16

Updated: 2020-10-19T12:15:16

Reserved: 2020-02-12T00:00:00


Link: CVE-2020-8929

JSON object: View

cve-icon NVD Information

Status : Analyzed

Published: 2020-10-19T13:15:13.437

Modified: 2020-10-29T22:16:48.257


Link: CVE-2020-8929

JSON object: View

cve-icon Redhat Information

No data.