Low severity · published Dec 2, 2020
CVE-2020-25723
A reachable assertion issue was found in the USB EHCI emulation code of QEMU
3.2
CVSS
0.4%
EPSS
No
On KEV
Description
A reachable assertion issue was found in the USB EHCI emulation code of QEMU. It could occur while processing USB requests due to missing handling of DMA memory map failure. A malicious privileged user within the guest may abuse this flaw to send bogus USB requests and crash the QEMU process on the host, resulting in a denial of service.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 30% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
10.0 · source: NVD
QE
Qemu · Qemu
through 5.1.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-25723
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-25723
Mailing List
http://www.openwall.com/lists/oss-security/2020/12/22/1
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1898579
Mailing List
https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html
Third Party Advisory
https://security.netapp.com/advisory/ntap-20201218-0004/
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