CVE-2020-35517
HIGH severity · CVSS 8.2 · Improper privilege management
8.2CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredHigh
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)1%
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://bugzilla.redhat.com/show_bug.cgi?id=1915823 ↗
Additional information
- NVD record
- https://bugzilla.redhat.com/show_bug.cgi?id=1915823Patch
- https://github.com/qemu/qemu/commit/ebf101955ce8f8d72fba103b5151115a4335de2cPatch
- https://lists.gnu.org/archive/html/qemu-devel/2021-01/msg05461.htmlPatch
- https://www.openwall.com/lists/oss-security/2021/01/22/1Patch
- https://security.gentoo.org/glsa/202208-27Advisory
- https://security.netapp.com/advisory/ntap-20210312-0002/Advisory