Vulnerability identifier: #VU16683

Vulnerability risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-20125

CWE-ID: CWE-476

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
QEMU
Client/Desktop applications / Virtualization software

Vendor: QEMU

Description

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

The vulnerability exists due to a NULL pointer dereference error in hw/rdma/vmw/pvrdma_cmd.c. A local attacker can trigger excessive memory allocation in create_cq_ring or create_qp_rings and perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

QEMU: 0.1 - 3.0.0

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External links
http://lists.gnu.org/archive/html/qemu-devel/2018-12/msg02823.html

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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.