Security restrictions bypass in OpenBSD

Published: 2018-07-31

Risk	Low
Patch available	YES
Number of vulnerabilities	1
CVE-ID	N/A
CWE-ID	CWE-264
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	OpenBSD Operating systems & Components / Operating system
Vendor	OpenBSD

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Security restrictions bypass

EUVDB-ID: #VU14126

Risk: Low

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: N/A

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The weakness exists due to IO port permissions were incorrectly restricted. A remote attacker can bypass security restrictions and conduct further attacks.

Mitigation

Update to version 6.2.

Vulnerable software versions

OpenBSD: 6.0 - 6.1

External links

http://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/020_ioport.patch.sig

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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