Integer overflow in QEMU - CVE-2020-11869
Published: May 5, 2020
Vulnerability identifier: #VU27543
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-11869
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: QEMU
Affected software:
QEMU
QEMU
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to integer overflow within the implementation of ATI VGA emulation in ati_2d_blt() routine in hw/display/ati-2d.c while handling MMIO write operations through the ati_mm_write() callback.. A remote attacker on the guest operating system can abuse this flaw to crash the QEMU process, resulting in a denial of service.
How to mitigate CVE-2020-11869
Install updates from vendor's website.