CVE-2018-13405 - CVE House
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Status published High CVE-2018-13405

The inode_init_owner function in fs/inode.c in the Linux kernel through...

Vulnerability Description

The inode_init_owner function in fs/inode.c in the Linux kernel through 3.16 allows local users to create files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a plain file whose group ownership is that group. The intended behavior was that the non-member can trigger creation of a directory (but not a plain file) whose group ownership is that group. The non-member can escalate privileges by making the plain file executable and SGID.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

linux kernel, debian linux, ubuntu linux, fedora, mrg realtime, virtualization, enterprise linux aus, enterprise linux desktop, enterprise linux eus, enterprise linux for real time, enterprise linux server, enterprise linux server aus, enterprise linux server tus, enterprise linux workstation, big-ip access policy manager, big-ip advanced firewall manager, big-ip analytics, big-ip application acceleration manager, big-ip application security manager, big-ip domain name system, big-ip edge gateway, big-ip fraud protection service, big-ip global traffic manager, big-ip link controller, big-ip local traffic manager, big-ip policy enforcement manager, big-ip webaccelerator
Vulnerable Versions:
0, 8.0, 9.0, 14.04, 16.04, 18.04, 34, 35, 2.0, 4.0, 7.4, 6.0, 7.0, 7.5, 7, 6.6, 7.2, 7.3, 13.0.0, 14.0.0, 15.0.0, 15.1.0, 16.0.0

Timeline

Official Publish: July 6th, 2018
Last Modified: August 5th, 2024
Added to House: July 20th, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.