CVE-2024-45593
Nix affected by unsafe NAR unpacking
CVE-2024-45593 is a critical vulnerability (CVSS 9.1) in Nixos Nix, published September 10, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.60%, the 48th percentile. Fixed in nix 2.6.0+dfsg-3ubuntu0.1~esm1.
Nix is a package manager for Linux and other Unix systems. A bug in Nix 2.24 prior to 2.24.6 allows a substituter or malicious user to craft a NAR that, when unpacked by Nix, causes Nix to write to arbitrary file system locations to which the Nix process has access. This will be with root permissions when using the Nix daemon. This issue is fixed in Nix 2.24.6.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Nix affected by unsafe NAR unpacking
Nix is a package manager for Linux and other Unix systems. A bug in Nix 2.24 prior to 2.24.6 allows a substituter or malicious user to craft a NAR that, when unpacked by Nix, causes Nix to write to arbitrary file system locations to which the Nix process has access. This will be with root permissions when using the Nix daemon. This issue is fixed in Nix 2.24.6.
- Record
CVE-2024-45593- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H - Weakness
- CWE-22
- Updated
- 2026-11-02
EUVDEUVD-2024-41529
Nix is a package manager for Linux and other Unix systems. A bug in Nix 2.24 prior to 2.24.6 allows a substituter or malicious user to craft a NAR that, when unpacked by Nix, causes Nix to write to arbitrary file system locations to which the Nix process has access. This will be with root permissions when using the Nix daemon. This issue is fixed in Nix 2.24.6.
- Record
EUVD-2024-41529- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H - Updated
- 2026-11-03
NVD
Nix is a package manager for Linux and other Unix systems. A bug in Nix 2.24 prior to 2.24.6 allows a substituter or malicious user to craft a NAR that, when unpacked by Nix, causes Nix to write to arbitrary file system locations to which the Nix process has access. This will be with root permissions when using the Nix daemon. This issue is fixed in Nix 2.24.6.
- Record
CVE-2024-45593- CVSS 3.1
- 9.0 Critical
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H - CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-22
- Updated
- 2026-11-02
OSV
Nix affected by unsafe NAR unpacking
Nix is a package manager for Linux and other Unix systems. A bug in Nix 2.24 prior to 2.24.6 allows a substituter or malicious user to craft a NAR that, when unpacked by Nix, causes Nix to write to arbitrary file system locations to which the Nix process has access. This will be with root permissions when using the Nix daemon. This issue is fixed in Nix 2.24.6.
- Record
CVE-2024-45593- CVSS 3.1
- 9.0 Critical
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H - Weakness
- CWE-22
- Updated
- 2026-11-02
OSVUBUNTU-CVE-2024-45593
Nix is a package manager for Linux and other Unix systems. A bug in Nix 2.24 prior to 2.24.6 allows a substituter or malicious user to craft a NAR that, when unpacked by Nix, causes Nix to write to arbitrary file system locations to which the Nix process has access. This will be with root permissions when using the Nix daemon. This issue is fixed in Nix 2.24.6.
- Record
UBUNTU-CVE-2024-45593- CVSS 3.1
- 9.0 Critical
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H - CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVUSN-7633-1 No score
nix vulnerabilities
Linus Heckemann discovered that Nix did not correctly handle certain binaries. An attacker could possibly use this issue to execute arbitrary code. (CVE-2024-38531)
Pierre-Etienne Meunier discovered that Nix did not correctly handle TLS certificates. A remote attacker could possibly use this issue to leak sensitive information. (CVE-2024-47174)
It was discovered that Nix did not correctly handle Unix sockets. An attacker could possibly use this issue execute arbitrary code. This issue only affected Ubuntu 24.04 LTS. (CVE-2024-27297)
It was discovered that Nix did not correctly handle unpacking Nix archives (NARS). If a user or automated system were tricked into opening a specially crafted file, an attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2024-45593)
- Record
USN-7633-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
nixUbuntu:Pro:22.04:LTS |
before 2.6.0+dfsg-3ubuntu0.1~esm1, plus listed versions 2.3.10+dfsg1-12.3.10+dfsg1-1build12.6.0+dfsg-22.6.0+dfsg-3 |
2.6.0+dfsg-3ubuntu0.1~esm1 |
nixUbuntu:Pro:24.04:LTS |
before 2.18.1+dfsg-1ubuntu5+esm2, plus listed versions 2.16.1+dfsg-3ubuntu12.18.1+dfsg-1ubuntu12.18.1+dfsg-1ubuntu22.18.1+dfsg-1ubuntu42.18.1+dfsg-1ubuntu5 |
2.18.1+dfsg-1ubuntu5+esm2 |
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases, published | EUVD |
| 2026-11-02 | created | CVE List, NVD, OSV |
References
github.com/NixOS/nix/security/advisories/GHSA-h4vv-h3jq-v493
nvd.nist.gov/vuln/detail/CVE-2024-45593
ubuntu.com/security/CVE-2024-45593
cve.org/CVERecord?id=CVE-2024-45593