Is CVE-2024-38531 in the CISA KEV catalog?

No. CVE-2024-38531 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2024-38531?

CVE-2024-38531 has a CVSS v3 base score of 3.6 (LOW).

What is the EPSS score for CVE-2024-38531?

CVE-2024-38531 has an EPSS score of 0.14% (4th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2024-38531?

Upgrade nix on debian 13 to 2.23.3+dfsg-1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2024-38531

LOW

3.6

CVSS v3

NVD

Description

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.

CWE-278

How to fix

Remediation Available

nixDebian

Fixed in:2.23.3+dfsg-1CVE-2024-38531

nixUbuntu

Fixed in:2.6.0+dfsg-3ubuntu0.1~esm1USN-7633-1

Fixed in:2.18.1+dfsg-1ubuntu5+esm2USN-7633-1

nix-binUbuntu

Fixed in:2.6.0+dfsg-3ubuntu0.1~esm1USN-7633-1

Fixed in:2.18.1+dfsg-1ubuntu5+esm2USN-7633-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityHigh

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityLow

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L

Exploit Intelligence

0.14%probability of exploitation in 30 days

4thpercentile

Low risk: more likely to be exploited than 4% of all known CVEs.

References

Other references2

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.