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.
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Wed, 23 Apr 2025 17:15:00 +0000
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2022-09-20T19:50:08.000Z
Updated: 2025-04-23T16:56:59.041Z
Reserved: 2022-09-02T00:00:00.000Z
Link: CVE-2022-39218

Updated: 2024-08-03T12:00:42.500Z

Status : Modified
Published: 2022-09-20T20:15:10.447
Modified: 2024-11-21T07:17:48.703
Link: CVE-2022-39218

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