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CVE Record

CVE-2000-0143: The SSH protocol server sshd allows local users without shell access to redirect a TCP connection through a...

The SSH protocol server sshd allows local users without shell access to redirect a TCP connection through a service that uses the standard system password database for authentication, such as POP or FTP.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2000-0143 describes an SSH server behavior where users meant to have no shell access could still redirect TCP connections through sshd to password-based services such as POP or FTP. This weakens account restrictions and may expose internal services through an authenticated but constrained account.

Executive priority

Treat as a legacy exposure review item, not an emergency based on current evidence. Prioritize systems where restricted accounts coexist with SSH access and older password-based services.

Technical view

The issue concerns sshd allowing local users without shell access to perform TCP redirection through services that authenticate against the standard system password database. The source bundle does not identify affected vendors, versions, CVSS, CWE, exploit status, or a specific patch.

Likely exposure

Exposure is most plausible on legacy SSH deployments or systems with restricted/no-shell accounts and reachable POP, FTP, or similar password-database-backed services. The bundle does not name affected products or versions.

Exploitation context

The bundle does not show CISA KEV listing or active exploitation. The described condition requires a local user context without shell access and an sshd behavior permitting TCP redirection.

Researcher notes

Evidence is sparse. The CVE description identifies the behavior but not affected versions, root cause, CVSS, CWE, or fixed releases. Avoid assuming modern OpenSSH exposure without vendor-specific confirmation.

Mitigation direction

  • Check current vendor guidance for the specific sshd implementation in use.
  • Replace or upgrade unsupported SSH server software after vendor confirmation.
  • Where supported, disable SSH TCP forwarding for restricted accounts.
  • Review no-shell accounts that can authenticate to SSH-accessible systems.
  • Reduce exposure of POP, FTP, or similar legacy services.

Validation and detection

  • Inventory SSH servers, especially legacy or embedded systems.
  • Identify accounts configured without shell access but still able to authenticate.
  • Review sshd configuration for TCP forwarding controls.
  • Check whether POP, FTP, or similar services use the system password database.
  • Confirm product and version against vendor advisories.
Prepared
Confidence
medium
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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.

description · low confidence lookup

Credential and access behavior lookup

The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
description · low confidence lookup

Database behavior lookup

The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2000-0143 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.