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Fencer Intel
medium 5.4

CVE-2019-3886 json

An incorrect permissions check was discovered in libvirt 4.8.0 and above.

published 7y ago modified 4mo ago also EUVD-2019-13496

cvss
5.4
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits
0
none known

Summary

An incorrect permissions check was discovered in libvirt 4.8.0 and above. The readonly permission was allowed to invoke APIs depending on the guest agent, which could lead to potentially disclosing unintended information or denial of service by causing libvirt to block.

Patch / fix

  • redhat libvirt 5.3.0
  • libvirt Debian 14, Debian 13, Debian 12 5.0.0-2

debian advisories DEBIAN-CVE-2019-3886

  • SLOF advanced virtualization 8.1 20190703-1.gitba1ab360.module+el8.1.0+3730+7d905127
  • hivex advanced virtualization 8.1 1.3.15-7.module+el8.1.0+3554+1a3a94a6
  • netcf advanced virtualization 8.1 0.2.8-12.module+el8.1.0+3921+a49f7d7b
  • swtpm advanced virtualization 8.1 0.1.0-1.20190425gitca85606.module+el8.1.0+3966+4a23dca1.1
  • nbdkit advanced virtualization 8.1 1.12.5-1.module+el8.1.0+3868+35f94834
  • libtpms advanced virtualization 8.1 0.6.1-0.20190121git9dc915572b.module+el8.1.0+3523+b348b848.2
  • libvirt advanced virtualization 8.1 5.6.0-6.module+el8.1.0+4244+9aa4e6bb
  • seabios advanced virtualization 8.1 1.12.0-5.module+el8.1.0+4022+29a53beb

red hat advisories RHBA-2019:3723

  • libvirt SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +2 more 2.0.0-27.54.1
  • libvirt SLE Module for Server Applications 15, SLE Module for Basesystem 15 4.0.0-9.19.4
  • libvirt SLES for SAP 12 SP3, SLES 12 SP3, SLED 12 SP3 +1 more 3.3.0-5.30.1
  • libvirt SLES for SAP 12 SP4, SLES 12 SP4, SLED 12 SP4 +1 more 4.0.0-8.9.1
  • libvirt SLES 11 SP4-LTSS 1.2.5-23.20.1

suse advisories SUSE-SU-2019:14097-1SUSE-SU-2019:1438-1SUSE-SU-2019:1285-1SUSE-SU-2019:1042-1SUSE-SU-2019:0948-1

  • libvirt openSUSE Tumbleweed 7.7.0-2.1

opensuse advisories openSUSE-SU-2024:11008-1

Is CVE-2019-3886 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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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-2019-3886 updated cvss 5.4

libvirt: virsh domhostname command discloses guest hostname in readonly mode

  • Red Hat Enterprise Linux 8 Advanced Virtualization libvirt, libvirt-nss, libvirt-libs, libvirt-admin, libvirt-client, libvirt-daemon, +22 more
    affected: no fix available
  • Red Hat Advanced Virtualization CodeReady Builder for RHEL 8.1.0 hivex 1.3.15-7.module+el8.1.0+3554+1a3a94a6, netcf 0.2.8-12.module+el8.1.0+3921+a49f7d7b, libvirt 5.6.0-6.module+el8.1.0+4244+9aa4e6bb, seabios 1.12.0-5.module+el8.1.0+4022+29a53beb, libiscsi 1.18.0-8.module+el8.1.0+3554+1a3a94a6, libvirt-nss 5.6.0-6.module+el8.1.0+4244+9aa4e6bb, +41 more Red Hat Advanced Virtualization for RHEL 8.1.0 hivex 1.3.15-7.module+el8.1.0+3554+1a3a94a6, netcf 0.2.8-12.module+el8.1.0+3921+a49f7d7b, libvirt 5.6.0-6.module+el8.1.0+4244+9aa4e6bb, nbdkit 1.12.5-1.module+el8.1.0+3868+35f94834, seabios 1.12.0-5.module+el8.1.0+4022+29a53beb, libiscsi 1.18.0-8.module+el8.1.0+3554+1a3a94a6, +92 more
    fixed: vendor fix RHBA-2019:3723
  • Red Hat Enterprise Linux 5 libvirt Red Hat Enterprise Linux 6 libvirt, libvirt-client, libvirt-python, libvirt-lock-sanlock Red Hat Enterprise Linux 7 libvirt, libvirt-nss, libvirt-libs, libvirt-admin, libvirt-client, libvirt-daemon, +24 more Red Hat Enterprise Linux 8 libvirt, libvirt-nss, libvirt-libs, libvirt-admin, libvirt-client, libvirt-daemon, +22 more Red Hat Storage 3 libvirt-lock-sanlock Red Hat Virtualization 4 libvirt, libvirt-admin, libvirt-daemon-kvm, libvirt-daemon-lxc, libvirt-lock-sanlock
    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

1.12% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3886 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.0 5.4 CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
NVD 3.1 5.4 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
NVD 2.0 4.8 AV:A/AC:L/Au:N/C:P/I:N/A:P

Affected products

  • The libvirt Project libvirt

Classification

Weakness

References

Sources

Fencer Intel 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.