Vulnerability identifier: #VU11231

Vulnerability risk: Medium

CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-15119

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
QEMU
Client/Desktop applications / Virtualization software

Vendor: QEMU

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

The weakness exists due to resource exhaustion when sending large option requests, making the server waste CPU time on reading up to 4GB per request. A remote attacker can cause the service to crash.

Mitigation
Update to version 2.11.1 or later.

Vulnerable software versions

QEMU: 2.8.0 - 2.11.0

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External links
http://www.qemu.org/2018/02/14/qemu-2-11-1-and-spectre-update/

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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.