CVE Vulnerability

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.

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

Scope

5.3 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/google/tink/security/advisories/GHSA-g5vf-v6wf-7w2r Patch Third Party Advisory
https://github.com/google/tink/commit/93d839a5865b9d950dffdc9d0bc99b71280a8899 Patch Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:google:tink:*:*:*:*:*:*:*:*
Information

Published : 2020-10-19 01:15

Updated : 2020-10-29 10:16

NVD link : CVE-2020-8929

Mitre link : CVE-2020-8929

Products Affected
No products.
CWE
NVD-CWE-Other