SB2020101310 - Denial of service in QEMU

Description

This security bulletin contains information about 1 vulnerability.

1) Out-of-bounds write (CVE-ID: CVE-2020-24352)

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

CVSSv4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

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.

Remediation

Install update from vendor's website.

References

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