| Name | CVE-2019-14850 |
| Description | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| nbdkit (PTS) | buster | 1.10.3-1 | vulnerable |
| bullseye | 1.24.1-2 | fixed | |
| bookworm | 1.32.5-1 | fixed | |
| trixie | 1.36.3-1 | fixed | |
| sid | 1.38.1-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| nbdkit | source | (unstable) | 1.14.1-1 |
[buster] - nbdkit <no-dsa> (Minor issue)
[stretch] - nbdkit <no-dsa> (Minor issue)
[jessie] - nbdkit <ignored> (Minor issue, DoS/amplification for specific configuration, non-trivial backport, low popcon)
https://www.redhat.com/archives/libguestfs/2019-September/msg00084.html
1.15 (development branch):
https://github.com/libguestfs/nbdkit/commit/c05686f9577fa91b6a3a4d8c065954ca6fc3fd62
https://github.com/libguestfs/nbdkit/commit/a6b88b195a959b17524d1c8353fd425d4891dc5f
1.14:
https://github.com/libguestfs/nbdkit/commit/e06cde00659ff97182173d0e33fff784041bcb4a
https://github.com/libguestfs/nbdkit/commit/bf0d61883a2f02f4388ec10dc92d4c61c093679e
1.12:
https://github.com/libguestfs/nbdkit/commit/22b30adb796bb6dca264a38598f80b8a234ff978
https://github.com/libguestfs/nbdkit/commit/b2bc6683ea3cd1f6be694e8a681dfa411b7d15f3