Local privilege escalation in NetBSD

1) Privilege escalation

EUVDB-ID: #VU6182

Risk: Low

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/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 user to elevate privileges.

The vulnerability exists due to design error within Xen-amd64 port implementation. A local user can read and write data into several kernel pages.

Successful exploitation of the vulnerability may allow a local user to elevate privileges on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

NetBSD: 6.0 - 7.0.2

External links

http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2017-003.txt.asc

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.