CVE-2018-13405

CVE Details

Release Date:2018-07-06

Description


The inode_init_owner function in fs/inode.c in the Linux kernel through 4.17.4 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.

See more information about CVE-2018-13405 from MITRE CVE dictionary and NIST NVD


CVSS v3.0 metrics


NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.

Base Score: 7.8 Base Metrics: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Access Vector: Local network Attack Complexity: Low
Privileges Required: Low User Interaction: None
Scope: Unchanged Confidentiality Impact: High
Integrity Impact: High Availability Impact: High

Errata information


PlatformErrataRelease Date
Oracle Linux version 6 (dtrace-modules-3.8.13-118.24.1.el6uek)ELSA-2018-42112018-09-10
Oracle Linux version 6 (kernel)ELSA-2019-07172019-04-11
Oracle Linux version 6 (kernel-uek)ELSA-2018-42112018-09-10
Oracle Linux version 7 (dtrace-modules-3.8.13-118.24.1.el7uek)ELSA-2018-42112018-09-10
Oracle Linux version 7 (kernel)ELSA-2018-30832018-11-05
Oracle Linux version 7 (kernel-uek)ELSA-2018-42112018-09-10



This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team

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