NixOS nix up to 2.23.0 insecure preserved inherited permissions

Summaryinfo

A vulnerability has been found in NixOS nix up to 2.23.0 and classified as problematic. Affected by this vulnerability is an unknown functionality. The manipulation leads to insecure preserved inherited permissions. This vulnerability is documented as CVE-2024-38531. The attack needs to be performed locally. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in NixOS nix up to 2.23.0 and classified as problematic. This issue affects an unknown part. The manipulation with an unknown input leads to a insecure preserved inherited permissions vulnerability. Using CWE to declare the problem leads to CWE-278. A product inherits a set of insecure permissions for an object, e.g. when copying from an archive file, without user awareness or involvement. Impacted is integrity, and availability. The summary by CVE is:

Nix is a package manager for Linux and other Unix systems that makes package management reliable and reproducible. A build process has access to and can change the permissions of the build directory. After creating a setuid binary in a globally accessible location, a malicious local user can assume the permissions of a Nix daemon worker and hijack all future builds. This issue was patched in version(s) 2.23.1, 2.22.2, 2.21.3, 2.20.7, 2.19.5 and 2.18.4.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2024-38531 since 06/18/2024. The exploitation is known to be difficult. Attacking locally is a requirement. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1222 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 242201 (Ubuntu 22.04 LTS / 24.04 LTS : Nix vulnerabilities (USN-7633-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (242201). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• NixOS

Name

• nix

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9
• 2.10
• 2.11
• 2.12
• 2.13
• 2.14
• 2.15
• 2.16
• 2.17
• 2.18
• 2.18.0
• 2.18.1
• 2.18.2
• 2.18.3
• 2.19
• 2.19.0
• 2.19.1
• 2.19.2
• 2.19.3
• 2.19.4
• 2.20
• 2.20.0
• 2.20.1
• 2.20.2
• 2.20.3
• 2.20.4
• 2.20.5
• 2.20.6
• 2.21
• 2.21.0
• 2.21.1
• 2.21.2
• 2.22
• 2.22.0
• 2.22.1
• 2.23.0

Website

• Product: https://github.com/NixOS/nix/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

Discussion