High severity · published Jan 28, 2021
CVE-2020-35517
A flaw was found in qemu
8.2
CVSS
0.5%
EPSS
No
On KEV
Description
A flaw was found in qemu. A host privilege escalation issue was found in the virtio-fs shared file system daemon where a privileged guest user is able to create a device special file in the shared directory and use it to r/w access host devices.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
QE
Qemu · Qemu
5.0.0 through 5.2.50 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-35517
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-35517
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1915823
Patch
https://github.com/qemu/qemu/commit/ebf101955ce8f8d72fba103b5151115a4335de2c
Exploit
https://lists.gnu.org/archive/html/qemu-devel/2021-01/msg05461.html
Third Party Advisory
https://security.gentoo.org/glsa/202208-27
Third Party Advisory
https://security.netapp.com/advisory/ntap-20210312-0002/
Exploit
https://www.openwall.com/lists/oss-security/2021/01/22/1
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