{"id":"PYSEC-2020-142","details":"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.","aliases":["CVE-2020-8929","GHSA-g5vf-v6wf-7w2r"],"modified":"2023-11-08T04:04:19.465376Z","published":"2020-10-19T13:15:00Z","references":[{"type":"ADVISORY","url":"https://github.com/google/tink/security/advisories/GHSA-g5vf-v6wf-7w2r"},{"type":"FIX","url":"https://github.com/google/tink/commit/93d839a5865b9d950dffdc9d0bc99b71280a8899"}],"affected":[{"package":{"name":"tink","ecosystem":"PyPI","purl":"pkg:pypi/tink"},"ranges":[{"type":"GIT","repo":"https://github.com/google/tink","events":[{"introduced":"0"},{"fixed":"93d839a5865b9d950dffdc9d0bc99b71280a8899"}]},{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.0"}]}],"versions":["1.4.0"],"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/tink/PYSEC-2020-142.yaml"}}],"schema_version":"1.7.3"}