#VU53680 Information disclosure in QEMU - CVE-2021-3545

Vulnerability identifier: #VU53680

Vulnerability risk: Low

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-3545

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
QEMU
Client/Desktop applications / Virtualization software

Vendor: QEMU

Description

The vulnerability allows a remote user to gain access to potentially sensitive information.

The vulnerability exists due to uninitialized memory disclosure within the virgl_cmd_get_capset_info() function in vhost-user-gpu/virgl.c. A remote authenticated user of the guest operating system can gain unauthorized access to sensitive information on the system.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

QEMU: 4.1.0 - 6.0.0

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External links
https://seclists.org/oss-sec/2021/q2/176
https://gitlab.com/qemu-project/qemu/-/commit/121841b2

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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