Resource exhaustion in Qemu
CVE-2020-10717
A potential DoS flaw was found in the virtio-fs shared file system daemon (virtiofsd) implementation of the QEMU version >= v5.0. Virtio-fs is meant to share a host file system directory with a guest via virtio-fs device. If the guest opens the maximum number of file descriptors under the shared directory, a denial of service may occur. This flaw allows a guest user/process to cause this denial of service on the host.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.004 (31.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Qemu
- The Qemu Project — versions >= QEMU v5.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security.gentoo.org/glsa/202011-09 (vendor-advisory, Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- lists.gnu.org/archive/html/qemu-devel/2020-05/msg00143.html (Patch, Mailing List, Third Party Advisory)
- lists.gnu.org/archive/html/qemu-devel/2020-05/msg00141.html (Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2020/05/04/1 (Patch, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-10717?
- CVE-2020-10717 is a low-severity vulnerability in Qemu, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 3.3/10. Published 2020-05-04.
- How severe is CVE-2020-10717?
- Low severity. CVSS v3 base score is 3.3 out of 10.
- Is CVE-2020-10717 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.