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Fencer Vulns
medium 5.8

CVE-2017-15119 json

The Network Block Device (NBD) server in Quick Emulator (QEMU) before 2.11 is vulnerable to a denial of service issue.

published 2018-07-27 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-6580

cvss
5.8
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
3.3%
EPSS 3.3% chance of exploitation in 30 days, percentile 88%
public exploits
0
none known

Summary

The Network Block Device (NBD) server in Quick Emulator (QEMU) before 2.11 is vulnerable to a denial of service issue. It could occur if a client sent large option requests, making the server waste CPU time on reading up to 4GB per request. A client could use this flaw to keep the NBD server from serving other requests, resulting in DoS.

Patch / fix

  • qemu qemu 2.11.0
  • qemu Debian 14, Debian 13, Debian 12 1:2.11+dfsg-1

debian advisories DEBIAN-CVE-2017-15119

  • qemu Ubuntu 16.04 LTS 1:2.5+dfsg-5ubuntu10.22

ubuntu advisories UBUNTU-CVE-2017-15119

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • qemu-kvm-rhev RHEL 7, openstack 12, openstack 11 +3 more 10:2.10.0-21.el7
  • qemu-img-rhev RHEL 7, openstack 12, openstack 11 +3 more 10:2.10.0-21.el7
  • qemu-kvm-tools-rhev RHEL 7, openstack 12, openstack 11 +3 more 10:2.10.0-21.el7
  • qemu-kvm-common-rhev RHEL 7, openstack 12, openstack 11 +3 more 10:2.10.0-21.el7

red hat advisories RHSA-2018:1113RHSA-2018:1104

  • qemu SLES for SAP 12 SP2, SLES for Raspberry Pi 12 SP2, SLES 12 SP2 +1 more 2.6.2-41.37.1
  • qemu SLES for SAP 12 SP3, SLES 12 SP3, SLED 12 SP3 2.9.1-6.12.1

suse advisories SUSE-SU-2018:0831-1SUSE-SU-2018:0762-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-15119 updated cvss 5.8

qemu: DoS via large option request

  • Red Hat Enterprise Linux 7 qemu-img-ma, qemu-kvm-ma, qemu-kvm-rhev, qemu-kvm-tools-ma, qemu-kvm-common-ma
    affected: no fix available
  • Red Hat Enterprise Linux OpenStack Platform 6 (Juno) qemu-kvm-rhev Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) qemu-img-rhev, qemu-kvm-rhev, libcacard-rhev, qemu-kvm-tools-rhev, libcacard-devel-rhev, libcacard-tools-rhev, +1 more
    affected: no fix planned “Will not fix”
  • Red Hat OpenStack Platform 8.0 (Liberty) qemu-img-rhev 2.10.0-21.el7, qemu-kvm-rhev 2.10.0-21.el7, qemu-kvm-tools-rhev 2.10.0-21.el7, qemu-kvm-common-rhev 2.10.0-21.el7 Red Hat OpenStack Platform 9.0 qemu-img-rhev 2.10.0-21.el7, qemu-kvm-rhev 2.10.0-21.el7, qemu-kvm-tools-rhev 2.10.0-21.el7, qemu-kvm-common-rhev 2.10.0-21.el7 Red Hat OpenStack Platform 10.0 qemu-img-rhev 2.10.0-21.el7, qemu-kvm-rhev 2.10.0-21.el7, qemu-kvm-tools-rhev 2.10.0-21.el7, qemu-kvm-common-rhev 2.10.0-21.el7 Red Hat OpenStack Platform 11.0 qemu-img-rhev 2.10.0-21.el7, qemu-kvm-rhev 2.10.0-21.el7, qemu-kvm-tools-rhev 2.10.0-21.el7, qemu-kvm-common-rhev 2.10.0-21.el7 Red Hat OpenStack Platform 12.0 qemu-img-rhev 2.10.0-21.el7, qemu-kvm-rhev 2.10.0-21.el7, qemu-kvm-tools-rhev 2.10.0-21.el7, qemu-kvm-common-rhev 2.10.0-21.el7
    fixed: vendor fix RHSA-2018:1113
  • Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts qemu-img-rhev 2.10.0-21.el7, qemu-kvm-rhev 2.10.0-21.el7, qemu-kvm-tools-rhev 2.10.0-21.el7, qemu-kvm-common-rhev 2.10.0-21.el7
    fixed: vendor fix RHSA-2018:1104
  • Red Hat Enterprise Linux 5 kvm, xen Red Hat Enterprise Linux 6 qemu-img, qemu-kvm, qemu-kvm-rhev, qemu-kvm-tools, qemu-guest-agent, qemu-guest-agent-win32 Red Hat Enterprise Linux 7 qemu-img, qemu-kvm, libcacard, qemu-kvm-tools, libcacard-tools, qemu-kvm-common, +1 more Red Hat OpenShift Enterprise 3 qemu-kvm
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

3.28% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 5.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
NVD 3.0 8.6 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

  • QEMU qemu

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.