CVE-2019-14850
First published: Tue Oct 01 2019(Updated: )
A denial of service vulnerability was discovered in nbdkit 1.12.7, 1.14.1 and 1.15.1. An attacker could connect to the nbdkit service and cause it to perform a large amount of work in initializing backend plugins, by simply opening a connection to the service. This vulnerability could cause resource consumption and degradation of service in nbdkit, depending on the plugins configured on the server-side.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/nbdkit | <1.12.7 | 1.12.7 |
| redhat/nbdkit | <1.14.1 | 1.14.1 |
| redhat/nbdkit | <1.15.1 | 1.15.1 |
| Nbdkit Project Nbdkit | <1.12.7 | |
| Nbdkit Project Nbdkit | >=1.14.0<1.14.1 | |
| Nbdkit Project Nbdkit | >=1.15.0<1.15.1 | |
| Redhat Virtualization | =4.0 | |
| Redhat Enterprise Linux | =8.0 | |
| Redhat Enterprise Linux | =8.0 | |
| Redhat Enterprise Linux Server | =7.0 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1757258
- https://www.redhat.com/archives/libguestfs/2019-September/msg00084.html
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1757265
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1757264
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1757259
- https://github.com/libguestfs/nbdkit/commit/c05686f9577fa91b6a3a4d8c065954ca6fc3fd62
- https://github.com/libguestfs/nbdkit/commit/a6b88b195a959b17524d1c8353fd425d4891dc5f
- https://github.com/libguestfs/nbdkit/commit/e06cde00659ff97182173d0e33fff784041bcb4a
- https://github.com/libguestfs/nbdkit/commit/bf0d61883a2f02f4388ec10dc92d4c61c093679e
- https://github.com/libguestfs/nbdkit/commit/22b30adb796bb6dca264a38598f80b8a234ff978
- https://github.com/libguestfs/nbdkit/commit/b2bc6683ea3cd1f6be694e8a681dfa411b7d15f3
- https://access.redhat.com/errata/RHSA-2020:1167
- https://access.redhat.com/security/cve/cve-2019-14850
Frequently Asked Questions
What is CVE-2019-14850?
CVE-2019-14850 is a denial of service vulnerability in nbdkit 1.12.7, 1.14.1, and 1.15.1.
How does CVE-2019-14850 work?
CVE-2019-14850 allows an attacker to perform a large amount of work in initializing backend plugins by simply opening a connection to the nbdkit service.
What is the severity of CVE-2019-14850?
The severity of CVE-2019-14850 is low with a CVSS score of 3.7.
Which software versions are affected by CVE-2019-14850?
The affected software versions are nbdkit 1.12.7, 1.14.1, and 1.15.1.
How can I fix CVE-2019-14850?
To fix CVE-2019-14850, update nbdkit to versions 1.12.8, 1.14.2, or 1.15.2.
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