Security readout for executives and security teams
Plain-English summary
This flaw affects OCI OpenDDS before 3.18.1. A malformed length value could be mishandled and may let a remote attacker run arbitrary code. The CVSS score is high, but exploitation is rated high complexity and no active exploitation is identified in the supplied sources.
Executive priority
Treat this as a high-priority remediation item for any business-critical or network-reachable OpenDDS deployment. The main business risk is remote code execution with potential service disruption, but supplied evidence does not indicate known active exploitation.
Technical view
CVE-2021-38445 is a CWE-130 length-parameter inconsistency in OCI OpenDDS. The CVSS 3.1 vector is network-accessible, unauthenticated, no user interaction, high complexity, and may impact confidentiality, integrity, and availability, with availability highest. Affected versions are OpenDDS prior to 3.18.1.
Likely exposure
Exposure is most likely in environments running OCI OpenDDS versions before 3.18.1 where OpenDDS communication is reachable over a network. The bundle does not provide CPEs, deployment patterns, or exact affected version ranges beyond “prior to 3.18.1.”
Exploitation context
The supplied data does not show CISA KEV listing or other evidence of active exploitation. The vulnerability is remotely reachable and unauthenticated, but CVSS marks attack complexity as high, so practical exploitation may require specific conditions not described here.
Researcher notes
Key gaps are exact affected version ranges, affected configurations, and vendor-specific remediation details beyond the “prior to 3.18.1” boundary. Avoid assuming exploit availability. Validate exposure by version and network reachability rather than product name alone.
Mitigation direction
- Upgrade OCI OpenDDS to version 3.18.1 or later where applicable.
- Check OCI OpenDDS and CISA guidance for environment-specific mitigations.
- Limit untrusted network access to OpenDDS services until upgraded.
- Prioritize remediation for internet-exposed or operationally critical deployments.
Validation and detection
- Inventory systems and applications using OCI OpenDDS.
- Confirm installed OpenDDS versions are 3.18.1 or later.
- Review network paths that can reach OpenDDS communication endpoints.
- Check vulnerability management records for CVE-2021-38445 coverage.
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.
CWE-130: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-38445 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H2.24.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7HighVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02CVE reference · x_refsource_CONFIRM
- https://opendds.org/CVE reference · x_refsource_CONFIRM
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.
Improper Handling of Length Parameter Inconsistency
Improper Handling of Length Parameter Inconsistency represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.