CVE-2021-3716
Summary
| CVE | CVE-2021-3716 |
|---|---|
| State | PUBLIC |
| Assigner | [email protected] |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2022-03-02 23:15:00 UTC |
| Updated | 2023-07-07 19:27:00 UTC |
| 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. |
Risk And Classification
Problem Types: NVD-CWE-Other
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Nbdkit Project | Nbdkit | All | All | All | All |
| Operating System | Redhat | Enterprise Linux | 8.0 | All | All | All |
| Operating System | Redhat | Enterprise Linux | 8.0 | All | All | All |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| [Libguestfs] [NBDKIT SECURITY] STARTTLS denial-of-service weakness | MISC | listman.redhat.com | |
| server: CVE-2021-3716 reset structured replies on starttls (09a13daf) · Commits · nbdkit / nbdkit · GitLab | MISC | gitlab.com | |
| oss-security - Re: STARTTLS vulnerabilities | MISC | www.openwall.com | |
| 1994695 – (CVE-2021-3716) CVE-2021-3716 nbdkit: NBD_OPT_STRUCTURED_REPLY injection on STARTTLS | MISC | bugzilla.redhat.com | |
| server: reset meta context replies on starttls (6c5faac6) · Commits · nbdkit / nbdkit · GitLab | MISC | gitlab.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 159858 Oracle Enterprise Linux Security Update for virt:ol and virt-devel:ol (ELSA-2022-1759)
- 182726 Debian Security Update for nbdkit (CVE-2021-3716)
- 240292 Red Hat Update for virt:rhel and virt-devel:rhel security (RHSA-2022:1759)
- 281862 Fedora Security Update for nbdkit (FEDORA-2021-9c2ba2fcfc)
- 281863 Fedora Security Update for nbdkit (FEDORA-2021-535596f062)
- 901588 Common Base Linux Mariner (CBL-Mariner) Security Update for nbdkit (8873)
- 940525 AlmaLinux Security Update for virt:rhel and virt-devel:rhel (ALSA-2022:1759)
- 960314 Rocky Linux Security Update for virt:rhel and virt-devel:rhel (RLSA-2022:1759)