Auth bypass in The Libvirt Project
CVE-2019-3886
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.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L.
EPSS exploit prediction
EPSS: 0.011 (64.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 65th percentile — 64.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000
Affected products
- The Libvirt Project — versions 4.8.0 and above
- Fedoraproject Fedora — versions 29, 30
- openSUSE Leap — versions 42.3
- Red Hat Libvirt
Weakness classification (CWE)
References
- www.securityfocus.com/bid/107777 (VDB Entry, Third Party Advisory, vdb-entry)
- lists.opensuse.org/opensuse-security-announce/2019-04/msg00105.html (vendor-advisory, Mailing List, Third Party Advisory)
- usn.ubuntu.com/4021-1/ (vendor-advisory, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- access.redhat.com/errata/RHBA-2019:3723 (vendor-advisory, Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Exploit, Patch, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2019-3886?
- CVE-2019-3886 is a medium-severity vulnerability in The Libvirt Project, classified under Missing Authorization. CVSS score: 5.4/10. Published 2019-04-04.
- How severe is CVE-2019-3886?
- Medium severity. CVSS v3 base score is 5.4 out of 10.