Denial of service in QEMU



Published: 2020-10-13
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-24352
CWE-ID CWE-787
Exploitation vector Local
Public exploit N/A
Vulnerable software
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QEMU
Client/Desktop applications / Virtualization software

Vendor QEMU

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Out-of-bounds write

EUVDB-ID: #VU47531

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2020-24352

CWE-ID: CWE-787 - Out-of-bounds Write

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error within the ATI VGA device implementation of the QEMU emulator incide of the ati_2d_blt() routine while handling MMIO write operations through the ati_mm_write() callback. A local privileged user on a guest operating system can run a specially crafted program to trigger out-of-bounds write and crash the QEMU process.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

QEMU: 4.0.0 - 4.2.1


CPE2.3 External links

http://access.redhat.com/security/cve/CVE-2020-24352
http://bugzilla.suse.com/show_bug.cgi?id=1175370

Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?



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