Privilege escalation in OpenBSD

1) Privilege escalation

EUVDB-ID: #VU15730

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/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 local attacker to gain elevated privileges on the target system.

The weakness exists due to the syspatch utility incorrectly handles symbolic links. A local attacker can supply specially crafted symlinks and gain elevated privileges on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

OpenBSD: 6.4

External links

http://ftp.openbsd.org/pub/OpenBSD/patches/6.4/common/002_syspatch.patch.sig

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.