Home/CVE/hw/net/xgmac.c in the XGMAC Ethernet controller in QEMU before 07-20-2020 has a buffer overflow. This occurs during pack
CVE

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 pack

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.

MEDIUM · CVSS 5.3 EPSS 0.00127
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules1 YARA rules0
⬡

Weakness Classification

CWE-787Out-of-bounds Write
▤

Affected Products & Versions

4
qemu<= 5.0.0
qemuall versions
debian linuxall versions
canonical ubuntu linuxall versions
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumPotentially Suspicious Usage Of Qemu
▣

Scoring & Timeline

5.3
MEDIUM · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD28 Jul 2020 · 04:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
⚑

Vendor Advisories

12
suse-csafSUSE-SU-2021:14774-1
suse-csafSUSE-SU-2021:14772-1
suse-csafSUSE-SU-2021:1305-1
suse-csafSUSE-SU-2021:1240-1
suse-csafSUSE-SU-2021:1241-1
🔗

References & Sources

8
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00024.htmlMailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2020/07/22/1Mailing ListPatchThird Party Advisory
https://git.qemu.org/?p=qemu.git
https://lists.nongnu.org/archive/html/qemu-devel/2020-07/msg03497.htmlMailing ListPatchThird Party Advisory
https://lists.nongnu.org/archive/html/qemu-devel/2020-07/msg05745.htmlMailing ListPatchThird Party Advisory
https://security.gentoo.org/glsa/202208-27Third Party Advisory
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