CVE-2020-8929 – tink

Package

Manager: pip
Name: tink
Vulnerable Version: =1.4.0 || >=0 <93d839a5865b9d950dffdc9d0bc99b71280a8899 || >=0 <1.5.0

Severity

Level: Low

CVSS v3.1: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:F/RL:O/RC:C

CVSS v4.0: CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

EPSS: 0.00081 pctl0.24727

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.

Metadata

Created: 2020-10-19T13:15:00Z
Modified: 2023-11-08T04:04:19.465376Z
Source: https://osv-vulnerabilities
CWE IDs: N/A
Alternative ID: N/A
Finding: F052
Auto approve: 1