Information disclosure in Xen



Published: 2023-09-05
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-34321
CWE-ID CWE-200
Exploitation vector Local
Public exploit N/A
Vulnerable software
Subscribe 		Xen
Server applications / Virtualization software

Vendor Xen Project

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Information disclosure

EUVDB-ID: #VU80470

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-34321

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a malicious guest to gain access to potentially sensitive information.

The vulnerability exists due to an error when cleaning cache on arm32 systems. A malicious guest can read sensitive data from memory of another guest.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Xen: All versions

External links

http://xenbits.xen.org/xsa/advisory-437.html


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.



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