Use-after-free in QEMU - CVE-2020-15859
Published: July 24, 2020
Vulnerability identifier: #VU31800
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:A/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-2020-15859
CWE-ID: CWE-416
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vendor: QEMU
Affected software:
QEMU
QEMU
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error in hw/net/e1000e_core.c when processing MMIO operation. A local user on guest operating system can send a specially crafted e1000e packet with the data's address set to the e1000e's MMIO address and crash the QEMU process.
How to mitigate CVE-2020-15859
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.