Vulnerability Details : CVE-2020-27661
A divide-by-zero issue was found in dwc2_handle_packet in hw/usb/hcd-dwc2.c in the hcd-dwc2 USB host controller emulation of QEMU. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service.
Vulnerability category: Denial of service
Products affected by CVE-2020-27661
- cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-27661
0.02%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 2 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-27661
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
2.1
|
LOW | AV:L/AC:L/Au:N/C:N/I:N/A:P |
3.9
|
2.9
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H |
2.0
|
4.0
|
NIST |
CWE ids for CVE-2020-27661
-
The product divides a value by zero.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-27661
-
https://lists.nongnu.org/archive/html/qemu-devel/2020-10/msg04263.html
[PATCH v2] hw/usb/hcd-dwc2: fix divide-by-zero in dwc2_handle_packet()Mailing List;Patch;Third Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=1890653
1890653 – (CVE-2020-27661) CVE-2020-27661 QEMU: divide by zero in dwc2_handle_packet() in hw/usb/hcd-dwc2.cIssue Tracking;Patch;Third Party Advisory
-
https://git.qemu.org/?p=qemu.git;a=commit;h=bea2a9e3e00b275dc40cfa09c760c715b8753e03
git.qemu.org Git - qemu.git/commitPatch;Vendor Advisory
-
https://security.netapp.com/advisory/ntap-20210720-0010/
CVE-2020-27661 QEMU Vulnerability in NetApp Products | NetApp Product SecurityThird Party Advisory
-
https://www.mail-archive.com/debian-bugs-dist@lists.debian.org/msg1770368.html
Bug#972864: qemu: CVE-2020-27661: divide by zero in dwc2_handle_packet() in hw/usb/hcd-dwc2.cPatch;Third Party Advisory
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