Vulnerability identifier: #VU7203

Vulnerability risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-190

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
OpenBSD
Operating systems & Components / Operating system

Vendor: OpenBSD

Description
The vulnerability allows a local attacker to trigger memory corruption on the target system.

The weakness exists due to integer overflow in the sti(4) display driver. A local attacker can run a specially crafted application to trigger memory corruption.

Mitigation
Install update from vendor's website.

Vulnerable software versions

OpenBSD: 6.0

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External links
http://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/027_sti.patch.sig
http://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/028_wsmux.patch.sig

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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.