7.5
CWE
22
Advisory Published
Updated

CVE-2021-31538: Path Traversal

First published: Thu Jun 10 2021(Updated: )

LANCOM R&S Unified Firewall (UF) devices running LCOS FX 10.5 allow Relative Path Traversal.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Lancom Systems LCOS=10.5
Lancom Systems LCOS=10.5-ru1
Lancom Systems LCOS=10.5-ru2
Lancom Systems LCOS=10.5-ru3
Lancom-systems Uf-160
Lancom Systems UF-260
Lancom Systems UF-500
Lancom Systems UF-60
Lancom-systems Uf-910

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Frequently Asked Questions

  • What is the severity of CVE-2021-31538?

    CVE-2021-31538 is categorized as a high-severity vulnerability due to its potential for unauthorized access via relative path traversal.

  • How do I fix CVE-2021-31538?

    To fix CVE-2021-31538, update the LANCOM R&S Unified Firewall devices to the latest version of LCOS FX that addresses this vulnerability.

  • Which devices are affected by CVE-2021-31538?

    CVE-2021-31538 affects LANCOM R&S Unified Firewall devices running LCOS FX version 10.5 including all its revisions.

  • What is relative path traversal in the context of CVE-2021-31538?

    Relative path traversal in CVE-2021-31538 allows attackers to access files and directories outside the intended file system path.

  • Is remote exploitation possible with CVE-2021-31538?

    Yes, remote exploitation is possible with CVE-2021-31538 if proper mitigations are not in place.

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