#VU11465 Resource exhaustion in libvirt - CVE-2018-5748

Vulnerability identifier: #VU11465

Vulnerability risk: Low

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-5748

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libvirt
Universal components / Libraries / Libraries used by multiple products

Vendor: libvirt.org

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

The weakness exists due to a flaw in qemu/qemu_monitor.c in libvirt. A remote attacker can supply a large QEMU reply, trigger resource exhaustion and cause the service to crash.

Mitigation
Install update from vendor's website.

Vulnerable software versions

libvirt: 0.2.0 - 4.2.0 rc1

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External links
https://lists.debian.org/debian-lts-announce/2018/03/msg00018.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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