CVE catalog
CVE-2021-3716
nbdkit: CVE-2021-3716
- Severity
- Low · CVSS 3.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.58% · Oct 25, 2026
A flaw was found in nbdkit due to to improperly caching plaintext state across the STARTTLS encryption boundary. A MitM attacker could use this flaw to inject a plaintext NBD_OPT_STRUCTURED_REPLY before proxying everything else a client sends to the server, potentially leading the client to terminate the NBD session. The highest threat from this vulnerability is to system availability.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | nbdkit | sid | 1.48.1-1 | fixed |
| Debian | nbdkit | forky | 1.48.1-1 | fixed |
| Debian | nbdkit | trixie | 1.42.3-1 | fixed |
| Debian | nbdkit | bookworm | 1.32.5-1 | fixed |
| Opensuse | nbdkit | tumbleweed | 1.27.8-1.2 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | nbdkit | source | sid | 1.26.5-1 | not yet assigned | Not reported | Not reported |
| Debian | nbdkit | source | forky | 1.26.5-1 | not yet assigned | Not reported | Not reported |
| Debian | nbdkit | source | trixie | 1.26.5-1 | not yet assigned | Not reported | Not reported |
| Debian | nbdkit | source | bookworm | 1.26.5-1 | not yet assigned | Not reported | Not reported |
| Opensuse | nbdkit | rpm | tumbleweed | 1.27.8-1.2 | Not reported | OPENSUSE-SU-2024:11078-1 | Not reported |
OpenFactory catalog packages
[openSUSE Tumbleweed]
- [nbdkit-bash-completion]Unknown
Source package: [nbdkit]
Details (1)
1.48.0-1.1· noarch · tumbleweedUnknown · Fixed:
1.27.8-1.2Version impact unknown
dsa · nbdkit · opensuse · tumbleweed
- [nbdkit-basic-filters]Unknown
Source package: [nbdkit]
Details (1)
1.48.0-1.1· x86_64 · tumbleweedUnknown · Fixed:
1.27.8-1.2Version impact unknown
dsa · nbdkit · opensuse · tumbleweed
- [nbdkit-basic-plugins]Unknown
Source package: [nbdkit]
Details (1)
1.48.0-1.1· x86_64 · tumbleweedUnknown · Fixed:
1.27.8-1.2Version impact unknown
dsa · nbdkit · opensuse · tumbleweed
- [nbdkit-bzip2-filter]Unknown
Source package: [nbdkit]
Details (1)
1.48.0-1.1· x86_64 · tumbleweedUnknown · Fixed:
1.27.8-1.2Version impact unknown
dsa · nbdkit · opensuse · tumbleweed
- [nbdkit-curl-plugin]Unknown
Source package: [nbdkit]
Details (1)
1.48.0-1.1· x86_64 · tumbleweedUnknown · Fixed:
1.27.8-1.2Version impact unknown
dsa · nbdkit · opensuse · tumbleweed
- [nbdkit-devel]Unknown
Source package: [nbdkit]
Details (1)
1.48.0-1.1· x86_64 · tumbleweedUnknown · Fixed:
1.27.8-1.2Version impact unknown
dsa · nbdkit · opensuse · tumbleweed
- [nbdkit-example-plugins]Unknown
Source package: [nbdkit]
Details (1)
1.48.0-1.1· x86_64 · tumbleweedUnknown · Fixed:
1.27.8-1.2Version impact unknown
dsa · nbdkit · opensuse · tumbleweed
- [nbdkit-gcs-plugin]Unknown
Source package: [nbdkit]
Details (1)
1.48.0-1.1· x86_64 · tumbleweedUnknown · Fixed:
1.27.8-1.2Version impact unknown
dsa · nbdkit · opensuse · tumbleweed
- [nbdkit-linuxdisk-plugin]Unknown
Source package: [nbdkit]
Details (1)
1.48.0-1.1· x86_64 · tumbleweedUnknown · Fixed:
1.27.8-1.2Version impact unknown
dsa · nbdkit · opensuse · tumbleweed
- [nbdkit-nbd-plugin]Unknown
Source package: [nbdkit]
Details (1)
1.48.0-1.1· x86_64 · tumbleweedUnknown · Fixed:
1.27.8-1.2Version impact unknown
dsa · nbdkit · opensuse · tumbleweed
- [nbdkit-python-plugin]Unknown
Source package: [nbdkit]
Details (1)
1.48.0-1.1· x86_64 · tumbleweedUnknown · Fixed:
1.27.8-1.2Version impact unknown
dsa · nbdkit · opensuse · tumbleweed
- [nbdkit-server]Unknown
Source package: [nbdkit]
Details (1)
1.48.0-1.1· x86_64 · tumbleweedUnknown · Fixed:
1.27.8-1.2Version impact unknown
dsa · nbdkit · opensuse · tumbleweed
- [nbdkit-ssh-plugin]Unknown
Source package: [nbdkit]
Details (1)
1.48.0-1.1· x86_64 · tumbleweedUnknown · Fixed:
1.27.8-1.2Version impact unknown
dsa · nbdkit · opensuse · tumbleweed
- [nbdkit-stats-filter]Unknown
Source package: [nbdkit]
Details (1)
1.48.0-1.1· x86_64 · tumbleweedUnknown · Fixed:
1.27.8-1.2Version impact unknown
dsa · nbdkit · opensuse · tumbleweed
- [nbdkit-tar-filter]Unknown
Source package: [nbdkit]
Details (1)
1.48.0-1.1· x86_64 · tumbleweedUnknown · Fixed:
1.27.8-1.2Version impact unknown
dsa · nbdkit · opensuse · tumbleweed
- [nbdkit-tmpdisk-plugin]Unknown
Source package: [nbdkit]
Details (1)
1.48.0-1.1· x86_64 · tumbleweedUnknown · Fixed:
1.27.8-1.2Version impact unknown
dsa · nbdkit · opensuse · tumbleweed
- [nbdkit-vddk-plugin]Unknown
Source package: [nbdkit]
Details (1)
1.48.0-1.1· x86_64 · tumbleweedUnknown · Fixed:
1.27.8-1.2Version impact unknown
dsa · nbdkit · opensuse · tumbleweed
- [nbdkit-xz-filter]Unknown
Source package: [nbdkit]
Details (1)
1.48.0-1.1· x86_64 · tumbleweedUnknown · Fixed:
1.27.8-1.2Version impact unknown
dsa · nbdkit · opensuse · tumbleweed
[Debian 12 (Bookworm)]
- [nbdkit]Fixed
Details (2)
1.32.5-1· amd64 · bookwormFixed · Fixed:
1.26.5-1dsa · nbdkit · debian · bookworm; dsa · nbdkit · debian · 12
1.32.5-1· arm64 · bookwormFixed · Fixed:
1.26.5-1dsa · nbdkit · debian · bookworm; dsa · nbdkit · debian · 12
- [nbdkit-plugin-dev]Fixed
Source package: [nbdkit]
Details (2)
1.32.5-1· amd64 · bookwormFixed · Fixed:
1.26.5-1dsa · nbdkit · debian · bookworm; dsa · nbdkit · debian · 12
1.32.5-1· arm64 · bookwormFixed · Fixed:
1.26.5-1dsa · nbdkit · debian · bookworm; dsa · nbdkit · debian · 12
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2024_11078-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2021-3716]
- [https://osv.dev/vulnerability/openSUSE-SU-2024:11078-1]
- [https://security-tracker.debian.org/tracker/CVE-2021-3716]
- [https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-3716.json]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]