CVE-2021-3716
nbdkit
LOW 3.1
At a glance
- Source
- NVD
- EPSS
- EPSS 0.58 % · percentile 48 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
- NVD status
- Modified
Description
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.
Weaknesses (CWE)
- CWE-924 — Improper Enforcement of Message Integrity During Transmission in a Communication Channel
References
- https://www.openwall.com/lists/oss-security/2021/08/18/2
- https://listman.redhat.com/archives/libguestfs/2021-August/msg00083.html
- https://gitlab.com/nbdkit/nbdkit/-/commit/09a13dafb7bb3a38ab52eb5501cba786365ba7fd
- https://gitlab.com/nbdkit/nbdkit/-/commit/6c5faac6a37077cf2366388a80862bb00616d0d8
- https://bugzilla.redhat.com/show_bug.cgi?id=1994695
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | LOW 3.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | LOW 3.5 | AV:N/AC:M/Au:S/C:N/I:N/A:P | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2021-26997
- GCVE · GCVE-0-2021-3716
Affected configurations (NVD CPE)
cpe:2.3:a:nbdkit_project:nbdkit:*:*:*:*:*:*:*:*≥ 1.11.8 < 1.24.6cpe:2.3:a:nbdkit_project:nbdkit:*:*:*:*:*:*:*:*≥ 1.25.1 < 1.26.5cpe:2.3:a:nbdkit_project:nbdkit:*:*:*:*:*:*:*:*≥ 1.27.1 < 1.27.6cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:*cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:*
Affected products
| Product | Versions |
|---|---|
| nbdkit | affected Affects nbdkit v1.12 through v1.26.4 | Fixedin nbdkit v1.26.5 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |