Denial of service in libvirt



Published: 2018-03-01 | Updated: 2018-04-02
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-1064
CWE-ID CWE-400
Exploitation vector Local
Public exploit N/A
Vulnerable software
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libvirt
Universal components / Libraries / Libraries used by multiple products

Vendor libvirt.org

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Resource exhaustion

EUVDB-ID: #VU11450

Risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-1064

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows a local attacker to cause DoS condition on the target system.

The weakness exists in the qemu_agent.c source code file due to an incomplete fix for CVE-2018-5748 that affects the QEMU monitor. A local attacker can consume excessive amounts of memory resources and cause the service to crash.

Mitigation

Update to version 4.2.0-rc1.

Vulnerable software versions

libvirt: 3.7.0 - 4.1.0

External links

http://libvirt.org/git/?p=libvirt.git;a=commit;h=fbf31e1a4cd19d6f6e33e0937a009775cd7d9513


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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