GHSA-mp3g-vpm9-9vqv
@fastly/js-compute has a use-after-free in some host call implementations
Quick fix
GHSA-mp3g-vpm9-9vqv — @fastly/js-compute: upgrade to the fixed version with the command below.
npm install @fastly/js-compute@3.16.0Details
### Impact The implementation of the following functions were determined to include a use-after-free bug:
* `FetchEvent.client.tlsCipherOpensslName` * `FetchEvent.client.tlsProtocol` * `FetchEvent.client.tlsClientCertificate` * `FetchEvent.client.tlsJA3MD5` * `FetchEvent.client.tlsClientHello` * `CacheEntry.prototype.userMetadata` of the `fastly:cache` subsystem * `Device.lookup` of the `fastly:device` subsystem
This bug could allow for an unintended data leak if the result of the preceding functions were sent anywhere else, and often results in a Compute service crash causing an HTTP 500 error to be returned. As all requests to Compute are isolated from one another, the only data at risk is data present for a single request.
### Patches This bug has been fixed in version 3.16.0 of the `@fastly/js-compute` package.
### Workarounds There are no workarounds for this bug, any use of the affected functions introduces the possibility of a data leak or crash in guest code.
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