Security readout for executives and security teams
Plain-English summary
A Nagios XI add-on called Docker Wizard had a server-side request forgery flaw before version 1.1.3. In business terms, a vulnerable monitoring server could be tricked into making unintended requests from its own network position. The sources do not provide severity scoring or evidence of active exploitation.
Executive priority
Prioritize confirmation in any Nagios XI environment, especially where monitoring hosts can reach sensitive internal networks. Urgency is constrained by missing severity data and no cited exploitation evidence, but remediation appears straightforward if the affected wizard is present.
Technical view
CVE-2021-37353 describes SSRF in Nagios XI Docker Wizard before 1.1.3, caused by improper sanitization in table_population.php. Public metadata does not include CVSS, CWE, CPEs, exploit status, or detailed remediation beyond the version boundary and Nagios change-log reference.
Likely exposure
Exposure is most likely limited to Nagios XI environments with Docker Wizard installed below version 1.1.3. The source bundle does not identify affected CPEs, exact Nagios XI versions, or deployment prerequisites, so teams should verify plugin presence and version directly.
Exploitation context
The provided sources do not state active exploitation, public exploit availability, or KEV listing. Because this is SSRF in a monitoring product, investigate reachable management networks and internal services, but avoid assuming impact beyond the published description.
Researcher notes
Key unknowns are authentication requirements, attack surface location, parameter behavior, and final impact. The CVE description names table_population.php and improper sanitization, but the bundle does not provide proof-of-concept details, CVSS vectors, CWE mapping, or affected CPEs.
Mitigation direction
- Upgrade Nagios XI Docker Wizard to version 1.1.3 or later.
- Review the Nagios XI change log for vendor-specific remediation details.
- Restrict access to Nagios XI administration interfaces to trusted users and networks.
- Limit outbound network access from Nagios XI where operationally feasible.
- Monitor vendor advisories for any expanded affected-version guidance.
Validation and detection
- Inventory Nagios XI systems and installed wizard versions.
- Confirm whether Docker Wizard is installed and below version 1.1.3.
- Review Nagios XI logs for unusual outbound request patterns.
- Check administrative access controls for the Nagios XI instance.
- Document compensating network restrictions around the monitoring host.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
Cloud metadata behavior lookup
The CVE wording references SSRF or metadata access, so cloud discovery and credential material review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupContainer behavior lookup
The affected technology mentions containers, so container-specific ATT&CK technique review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-37353 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.nagios.com/downloads/nagios-xi/change-log/CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.