CVE Vulnerability

CVE-2022-39218

The JS Compute Runtime for Fastly's Compute@Edge platform provides the environment JavaScript is executed in when using the Compute@Edge JavaScript SDK. In versions prior to 0.5.3, the `Math.random` and `crypto.getRandomValues` methods fail to use sufficiently random values. The initial value to seed the PRNG (pseudorandom number generator) is baked-in to the final WebAssembly module, making the sequence of random values for that specific WebAssembly module predictable. An attacker can use the fixed seed to predict random numbers generated by these functions and bypass cryptographic security controls, for example to disclose sensitive data encrypted by functions that use these generators. The problem has been patched in version 0.5.3. No known workarounds exist.

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 HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/fastly/js-compute-runtime/security/advisories/GHSA-cmr8-5w4c-44v8 Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:fastly:js-compute:*:*:*:*:*:node.js:*:*
Information

Published : 2022-09-20 08:15

Updated : 2022-09-21 08:02

NVD link : CVE-2022-39218

Mitre link : CVE-2022-39218

Products Affected
No products.
CWE
CWE-335

Incorrect Usage of Seeds in Pseudo-Random Number Generator (PRNG)