Buffer overflow in Qemu
CVE-2020-15863
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.
Vulnerability class: Buffer Overflow
EPSS: 0.005 (37.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L.
Affected products
- Qemu — versions 5.1.0
- Canonical Ubuntu_linux — versions 16.04, 18.04, 20.04
- Debian Debian_linux — versions 10.0
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Patch, Mailing List, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (x_refsource_CONFIRM, Patch, Mailing List, Third Party Advisory)
- cve@mitre.org (x_refsource_CONFIRM)
- cve@mitre.org (Patch, Mailing List, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- cve@mitre.org (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
- cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
Frequently asked questions
- What is CVE-2020-15863?
- CVE-2020-15863 is a medium-severity vulnerability in Qemu, classified under Out-of-bounds Write. CVSS score: 5.3/10. Published 2020-07-28.
- How severe is CVE-2020-15863?
- Medium severity. CVSS v3 base score is 5.3 out of 10.