Denial of service in Xen



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-46838
CWE-ID CWE-20
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Xen
Server applications / Virtualization software

Vendor Xen Project

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Input validation error

EUVDB-ID: #VU85682

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-46838

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows an unprivileged guest to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of network packets at the backend. An unprivileged guest can send zero-length packets to the OS kernel and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Xen: All versions

CPE2.3 External links

https://xenbits.xen.org/xsa/advisory-448.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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