CVE-2024-38375 – @fastly/js-compute

Package

Manager: npm
Name: @fastly/js-compute
Vulnerable Version: >=3.0.0 <3.16.0

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:H

CVSS v4.0: CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N

EPSS: 0.00092 pctl0.26877

Details

@fastly/js-compute has a use-after-free in some host call implementations ### 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.

Metadata

Created: 2024-06-26T19:12:23Z
Modified: 2024-06-26T21:56:15Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/06/GHSA-mp3g-vpm9-9vqv/GHSA-mp3g-vpm9-9vqv.json
CWE IDs: ["CWE-416"]
Alternative ID: GHSA-mp3g-vpm9-9vqv
Finding: F138
Auto approve: 1