Improper Certificate Validation in nix - CVE-2024-47174
Published: September 26, 2024 / Updated: April 8, 2026
Vulnerability identifier: #VU125375
CSH Severity: Medium
CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2024-47174
CWE-ID: CWE-295
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to improper certificate validation in <nix/fetchurl.nix> when establishing HTTPS connections. A remote attacker can perform a man-in-the-middle attack to disclose sensitive information.
Credentials may be exposed when authentication is supplied through a netrc file or through derivations using impureEnvVars.
Affected software
nix
Ubuntu
nix (Ubuntu package)
Ubuntu
nix (Ubuntu package)
How to mitigate CVE-2024-47174
Install security update from vendor's website.
nix - addressed in versions 2.18.8, 2.24.8
nix (Ubuntu package) - addressed in versions 2.6.0+dfsg-3ubuntu0.1~esm1, 2.18.1+dfsg-1ubuntu5+esm2
nix (Ubuntu package) - addressed in versions 2.6.0+dfsg-3ubuntu0.1~esm1, 2.18.1+dfsg-1ubuntu5+esm2