Information disclosure in OpenBSD



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID N/A
CWE-ID CWE-284
Exploitation vector Local network
Public exploit N/A
Vulnerable software
 OpenBSD
Operating systems & Components / Operating system

Vendor OpenBSD

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Information disclosure

EUVDB-ID: #VU14810

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: N/A

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to improper access control to LDTR registry on AMD systems in sys/arch/amd64/amd64/vmm_support.S. A remote attacker with access to virtual machine can access data in LDTR registry that belong to another virtual machine.

Mitigation

Install patch from vendor's website.

Vulnerable software versions

OpenBSD: 6.2

CPE2.3 External links

https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/024_ldtr.patch.sig


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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



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