Riskcovery

CVE-2024-39511

Junos OS: The 802.1X Authentication Daemon crashes on running a specific command

State
Published
Severity
6.8 Medium
Published
Jul 10, 2024
Updated
Aug 2, 2024
Reserved
Jun 25, 2024

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
4.06.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:Njuniper
3.15.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hjuniper

Weaknesses

  • CWE-20 Improper Input Validation

Affected Products

ProductVersions
Junos OSJuniper Networks
  • before 20.4R3-S10Affected
  • 21.2 to before 21.2R3-S7Affected
  • 21.4 to before 21.4R3-S6Affected
  • 22.1 to before 22.1R3-S5Affected
  • 22.2 to before 22.2R3-S3Affected
  • 22.3 to before 22.3R3-S2Affected
  • 22.4 to before 22.4R3-S1Affected
  • 23.2 to before 23.2R2Affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.