Vulnerability Details CVE-2020-8929
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 24.9%
CVSS Severity
CVSS v3 Score 5.3
CVSS v2 Score 5.0
References
Products affected by CVE-2020-8929
-
cpe:2.3:a:google:tink_java:1.0.0
-
cpe:2.3:a:google:tink_java:1.1.0
-
cpe:2.3:a:google:tink_java:1.1.1
-
cpe:2.3:a:google:tink_java:1.2.0
-
cpe:2.3:a:google:tink_java:1.2.1
-
cpe:2.3:a:google:tink_java:1.2.2
-
cpe:2.3:a:google:tink_java:1.3.0
-
cpe:2.3:a:google:tink_java:1.4.0