Arbitrary Code Execution Vulnerability in Hydra CI Service
CVE-2024-32657

4.6MEDIUM

Key Information:

Vendor

Nixos

Status
Hydra
Vendor
CVE Published:
22 April 2024

What is CVE-2024-32657?

Hydra is a Continuous Integration service for Nix based projects. Attackers can execute arbitrary code in the browser context of Hydra and execute authenticated HTTP requests. The abused feature allows Nix builds to specify files that Hydra serves to clients. One use of this functionality is serving NixOS .iso files. The issue is only with html files served by Hydra. The issue has been patched on https://hydra.nixos.org around 2024-04-21 14:30 UTC. The nixpkgs package were fixed in unstable and 23.11. Users with custom Hydra packages can apply the fix commit to their local installations. The vulnerability is only triggered when opening HTML build artifacts, so not opening them until the vulnerability is fixed works around the issue.

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Affected Version(s)

hydra < b72528be5074f3e62e9ae2c2ae8ef9c07a0b4dd3 < b72528be5074f3e62e9ae2c2ae8ef9c07a0b4dd3

hydra < 23.11 < 23.11

References

https://github.com/NixOS/hydra/security/advisories/GHSA-2...
x_refsource_CONFIRM
https://github.com/NixOS/nixpkgs/pull/306017
x_refsource_MISC
https://github.com/NixOS/nixpkgs/pull/306018
x_refsource_MISC

CVSS V3.1

Score:
4.6
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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