Improper Authentication Affecting nixos/nix package, versions [,2.24.8)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published27 Sept 2024
- disclosed26 Sept 2024
- creditPierre-Etienne Meunier
Introduced: 26 Sep 2024
CVE-2024-47174 (opens in a new tab)How to fix?
Upgrade nixos/nix to version 2.24.8 or higher.
Overview
Affected versions of this package are vulnerable to Improper Authentication due to the improper verification of TLS certificates in the builtin:fetchurl derivation builder. An attacker can intercept HTTPS connections and potentially access sensitive information by exploiting this vulnerability in a man-in-the-middle attack.
Note:
This is only exploitable if the user has a netrc file for authentication or relies on derivations with impureEnvVars set to use credentials from the environment.
Workaround
This vulnerability can be mitigated by using pkgs.fetchurl from Nixpkgs with impureEnvVars and curlOpts as needed.