Permissions, Privileges, and Access Controls in Linux kernel



Published: 2019-10-01 | Updated: 2019-12-23
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-17053
CWE-ID CWE-264
Exploitation vector Local
Public exploit N/A
Vulnerable software
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Linux kernel
Operating systems & Components / Operating system

Vendor Linux Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU22742

Risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-17053

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to the ieee802154_create() function in net/ieee802154/socket.c in the AF_IEEE802154 network module for the Linux kernel does not enforce CAP_NET_RAW when creating raw sockets. A local unprivileged user can create raw sockets on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Linux kernel: 5.3 - 5.3.2

External links

http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0edc3f703f7bcaf550774b5d43ab727bcd0fe06b
http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e69dbd4619e7674c1679cba49afd9dd9ac347eef


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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