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CVE-2018-13405

Public on 2018-07-06
Modified on 2024-05-08
Description

A vulnerability was found in the fs/inode.c:inode_init_owner() function logic of the LInux kernel that allows local users to create files with an unintended group ownership and with group execution and SGID permission bits set, in a scenario where a directory is SGID and belongs to a certain group and is writable by a user who is not a member of this group. This can lead to excessive permissions granted in case when they should not.

Severity
Important
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CVSS v3 Base Score
7.8
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Affected Packages

Platform Package Release Date Advisory
Amazon Linux 1 kernel 2018-08-04 23:48 ALAS-2018-1049
Amazon Linux 2 - Core kernel 2018-08-04 23:49 ALAS2-2018-1050

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD CVSSv2 4.6 AV:L/AC:L/Au:N/C:P/I:P/A:P
NVD CVSSv3 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H