CVE Vulnerability

CVE-2021-4239

The Noise protocol implementation suffers from weakened cryptographic security after encrypting 2^64 messages, and a potential denial of service attack. After 2^64 (~18.4 quintillion) messages are encrypted with the Encrypt function, the nonce counter will wrap around, causing multiple messages to be encrypted with the same key and nonce. In a separate issue, the Decrypt function increments the nonce state even when it fails to decrypt a message. If an attacker can provide an invalid input to the Decrypt function, this will cause the nonce state to desynchronize between the peers, resulting in a failure to encrypt all subsequent messages.

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/flynn/noise/pull/44 Patch Third Party Advisory
https://pkg.go.dev/vuln/GO-2022-0425 Patch Vendor Advisory
Configurations

Configuration 1

cpe:2.3:a:noiseprotocol:noise:-:*:*:*:*:go:*:*
Information

Published : 2022-12-27 10:15

Updated : 2023-01-06 01:30

NVD link : CVE-2021-4239

Mitre link : CVE-2021-4239

Products Affected
No products.
CWE
CWE-311

Missing Encryption of Sensitive Data