#VU13631 Security restrictions bypass


Published: 2018-07-10

Vulnerability identifier: #VU13631

Vulnerability risk: Low

CVSSv3.1:

CVE-ID: CVE-2018-13405

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local attacker to create arbitrary files on the target system.

The vulnerability exists due to the inode_init_owner function, as defined in the fs/inode.c source code file, allows the creation of arbitrary files in set-group identification (SGID) directories. A local attacker can create arbitrary files with unintended group ownership.

Mitigation
Update to version 4.17.4.

Vulnerable software versions

Linux kernel: 4.15.0 - 4.17.3


CPE

External links
http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0fa3ecd87848c9c93c2c82...


Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?


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