CVE-2020-15863

medium

Description

hw/net/xgmac.c in the XGMAC Ethernet controller in QEMU before 07-20-2020 has a buffer overflow. This occurs during packet transmission and affects the highbank and midway emulated machines. A guest user or process could use this flaw to crash the QEMU process on the host, resulting in a denial of service or potential privileged code execution. This was fixed in commit 5519724a13664b43e225ca05351c60b4468e4555.

References

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00024.html

http://www.openwall.com/lists/oss-security/2020/07/22/1

https://git.qemu.org/?p=qemu.git;a=commitdiff;h=5519724a13664b43e225ca05351c60b4468e4555

https://lists.nongnu.org/archive/html/qemu-devel/2020-07/msg03497.html

https://lists.nongnu.org/archive/html/qemu-devel/2020-07/msg05745.html

https://usn.ubuntu.com/4467-1/

https://www.debian.org/security/2020/dsa-4760

Details

Source: MITRE

Published: 2020-07-28

Updated: 2021-01-04

Type: CWE-787

Risk Information

CVSS v2

Base Score: 4.4

Vector: AV:L/AC:M/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 3.4

Severity: MEDIUM

CVSS v3

Base Score: 5.3

Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L

Impact Score: 3.7

Exploitability Score: 1.1

Severity: MEDIUM