Resource exhaustion in Xen

Published: 2016-08-02 | Updated: 2020-07-28

Risk	Low
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2016-5403
CWE-ID	CWE-400
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) Resource exhaustion

EUVDB-ID: #VU32259

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-2016-5403

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows a local authenticated user to perform a denial of service (DoS) attack.

The virtqueue_pop function in hw/virtio/virtio.c in QEMU allows local guest OS administrators to cause a denial of service (memory consumption and QEMU process crash) by submitting requests without waiting for completion.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Xen: 4.24

CPE2.3

cpe:2.3:a:xen_project:xen:4.24:*:*:*:*:*:*:*

External links

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.