description: A heap buffer overflow flaw was found in QEMU's Cirrus CLGD 54xx VGA emulator's VNC display driver support before 2.9; the issue could occur when a VNC client attempted to update its display after a VGA operation is performed by a guest. A privileged user/process inside a guest could use this flaw to crash the QEMU process or, potentially, execute arbitrary code on the host with privileges of the QEMU process.
problem types: CWE-122
affected:
{
product: Qemu:
vendor: QEMU
versions:
status: affected, version: 2.9
}
metrics:
cvssV3_0: [
attackComplexity: HIGH
attackVector: ADJACENT_NETWORK
availabilityImpact: LOW
baseScore: 5.5
baseSeverity: MEDIUM
confidentialityImpact: LOW
integrityImpact: LOW
privilegesRequired: LOW
scope: CHANGED
userInteraction: NONE
vectorString: CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
version: 3.0
]