NULL Pointer Dereference Affecting libvirt-devel package, versions <0:4.5.0-23.el7
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-RHEL7-LIBVIRTDEVEL-1515052
- published26 Jul 2021
- disclosed10 Jan 2019
Introduced: 10 Jan 2019
CVE-2019-3840 (opens in a new tab)How to fix?
Upgrade RHEL:7 libvirt-devel to version 0:4.5.0-23.el7 or higher.
This issue was patched in RHSA-2019:2294.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libvirt-devel package and not the libvirt-devel package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
A NULL pointer dereference flaw was discovered in libvirt before version 5.0.0 in the way it gets interface information through the QEMU agent. An attacker in a guest VM can use this flaw to crash libvirtd and cause a denial of service.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1663051
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3840
- https://www.redhat.com/archives/libvir-list/2019-January/msg00241.html
- https://access.redhat.com/security/cve/CVE-2019-3840
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TZRP2BRMI4RYFRPNFTTIAAUOGVN2ORP7/
- https://access.redhat.com/errata/RHSA-2019:2294
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00101.html
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00105.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TZRP2BRMI4RYFRPNFTTIAAUOGVN2ORP7/