Uutils coreutils cp Utility permissions

Summaryinfo

A vulnerability was found in Uutils coreutils. It has been declared as critical. This impacts an unknown function of the component cp Utility. Such manipulation leads to permissions. This vulnerability is traded as CVE-2026-35350. An attack has to be approached locally. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Uutils coreutils (version now known). Affected by this issue is some unknown processing of the component cp Utility. The manipulation with an unknown input leads to a permissions vulnerability. Using CWE to declare the problem leads to CWE-281. The product does not preserve permissions or incorrectly preserves permissions when copying, restoring, or sharing objects, which can cause them to have less restrictive permissions than intended. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The cp utility in uutils coreutils fails to properly handle setuid and setgid bits when ownership preservation fails. When copying with the -p (preserve) flag, the utility applies the source mode bits even if the chown operation is unsuccessful. This can result in a user-owned copy retaining original privileged bits, creating unexpected privileged executables that violate local security policies. This differs from GNU cp, which clears these bits when ownership cannot be preserved.

The weakness was shared by Zellic. The advisory is available at github.com. This vulnerability is handled as CVE-2026-35350 since 04/02/2026. The exploitation is known to be easy. Local access is required to approach this attack. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1222 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• Uutils

Name

• coreutils

Website

• Product: https://github.com/uutils/coreutils/

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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