CVE-2020-8929 (GCVE-0-2020-8929)
Vulnerability from cvelistv5
Published
2020-10-19 12:15
Modified
2024-08-04 10:12
Severity ?
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE
  • CWE-176 - Improper Handling of Unicode Encoding
Summary
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.
References
Impacted products
Vendor Product Version
Google LLC Tink Version: stable   < 1.5
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