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I. Basic Information for CVE-2021-4239
Vulnerability Information

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Vulnerability Title
Weak encryption and denial of service in github.com/flynn/noise
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
noise 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
noise是Flynn开源的一个实现 noise 协议框架的 Go 包。 noise存在安全漏洞,该漏洞源于加密 2^64 消息后,Noise 协议实现的密码安全性减弱,并且存在潜在的拒绝服务攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
github.com/flynn/noisegithub.com/flynn/noise 0 ~ 1.0.0 -
II. Public POCs for CVE-2021-4239
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III. Intelligence Information for CVE-2021-4239
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