CVE-2020-14339
A flaw was found in libvirt, where it leaked a file descriptor for `/dev/mapper/control` into the QEMU process.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.42%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A flaw was found in libvirt, where it leaked a file descriptor for `/dev/mapper/control` into the QEMU process. This file descriptor allows for privileged operations to happen against the device-mapper on the host. This flaw allows a malicious guest user or process to perform operations outside of their standard permissions, potentially causing serious damage to the host operating system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 0.42% probability · 36th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-772
- Affected
- redhat/libvirt · redhat/enterprise linux
- Source
- secalert@redhat.com
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1860069Issue Tracking, Patch, Third Party Advisory
- https://security.gentoo.org/glsa/202101-22Third Party Advisory
- https://security.gentoo.org/glsa/202210-06Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1860069Issue Tracking, Patch, Third Party Advisory
- https://security.gentoo.org/glsa/202101-22Third Party Advisory
- https://security.gentoo.org/glsa/202210-06Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.