Security readout for executives and security teams
Plain-English summary
CVE-2001-0830 is a denial-of-service issue in 6tunnel 0.08 and earlier. A remote client can repeatedly connect and disconnect, causing sockets not to close properly and exhausting server resources. This affects availability, not confidentiality or data integrity based on the supplied sources.
Executive priority
Treat as a legacy availability risk. Prioritize if 6tunnel is internet-facing or supports business-critical connectivity. If not deployed, no action is needed beyond confirming absence in asset inventory.
Technical view
6tunnel 0.08 and earlier mishandles closure of client-initiated sockets. Repeated remote connection cycling can leave sockets open, causing resource exhaustion and service denial. The CVE record does not provide CVSS, CWE, patch details, or affected platform specifics beyond the 6tunnel version range.
Likely exposure
Exposure is likely limited to systems still running 6tunnel 0.08 or earlier, especially where the service is reachable by untrusted networks. This is an older 2001-era issue, so modern exposure depends on legacy deployments.
Exploitation context
The provided sources describe a remotely triggerable denial of service. CISA KEV is false, and no cited source in the bundle reports active exploitation. No exploit code or operational attack details are included in the provided evidence.
Researcher notes
Evidence is sparse and old. The CVE description and IBM X-Force reference align on remote resource exhaustion through improper socket closure. No source-provided CVSS, patch identifier, CWE, or active exploitation evidence is available in the bundle.
Mitigation direction
- Inventory systems for 6tunnel and identify versions 0.08 or earlier.
- Check vendor or project guidance for fixed versions or replacement recommendations.
- Restrict access to 6tunnel from untrusted networks where possible.
- Monitor service resource usage and socket counts for abnormal growth.
- Retire or replace unsupported legacy 6tunnel deployments.
Validation and detection
- Confirm whether 6tunnel is installed on exposed servers.
- Verify the deployed 6tunnel version against the affected range.
- Review firewall rules for external access to the service.
- Check logs and monitoring for repeated connection churn.
- Document compensating controls if immediate removal is not possible.
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
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CVE-2001-0830 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
- 6tunnel-open-socket-dos(7337)CVE reference · vdb-entry, x_refsource_XF
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.