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An Improper Input Validation vulnerability in the 802.1X...

Moderate severity Unreviewed Published Jul 11, 2024 to the GitHub Advisory Database • Updated Jul 11, 2024

Package

No package listedSuggest a package

Affected versions

Unknown

Patched versions

Unknown

Description

An Improper Input Validation vulnerability in the 802.1X Authentication (dot1x) Daemon of Juniper Networks Junos OS allows a local, low-privileged attacker with access to the CLI to cause a Denial of Service (DoS).

On running a specific operational dot1x command, the dot1x daemon crashes. An attacker can cause a sustained DoS condition by running this command repeatedly.

When the crash occurs, the authentication status of any 802.1x clients is cleared, and any authorized dot1x port becomes unauthorized. The client cannot re-authenticate until the dot1x daemon restarts.

This issue affects Junos OS:

  • All versions before 20.4R3-S10;
  • 21.2 versions before 21.2R3-S7;
  • 21.4 versions before 21.4R3-S6;
  • 22.1 versions before 22.1R3-S5;
  • 22.2 versions before 22.2R3-S3;
  • 22.3 versions before 22.3R3-S2;
  • 22.4 versions before 22.4R3-S1;
  • 23.2 versions before 23.2R2.

References

Published by the National Vulnerability Database Jul 10, 2024
Published to the GitHub Advisory Database Jul 11, 2024
Last updated Jul 11, 2024

Severity

Moderate
5.5
/ 10

CVSS base metrics

Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weaknesses

CVE ID

CVE-2024-39511

GHSA ID

GHSA-g643-7wqc-f2xg

Source code

No known source code

Dependabot alerts are not supported on this advisory because it does not have a package from a supported ecosystem with an affected and fixed version.

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