Riskcovery

CVE-2024-30402

Junos OS and Junos OS Evolved: The l2ald crashes on receiving telemetry messages from a specific subscription

State
Published
Severity
8.2 High
Published
Apr 12, 2024
Updated
Aug 2, 2024
Reserved
Mar 26, 2024

Read the record on cve.org

Description

An Improper Check for Unusual or Exceptional Conditions vulnerability in the Layer 2 Address Learning Daemon (l2ald) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS).

When telemetry requests are sent to the device, and the Dynamic Rendering Daemon (drend) is suspended, the l2ald crashes and restarts due to factors outside the attackers control. Repeated occurrences of these events causes a sustained DoS condition.

This issue affects: Junos OS: * All versions earlier than 20.4R3-S10; * 21.2 versions earlier than 21.2R3-S7; * 21.4 versions earlier than 21.4R3-S5; * 22.1 versions earlier than 22.1R3-S4; * 22.2 versions earlier than 22.2R3-S3; * 22.3 versions earlier than 22.3R3-S1; * 22.4 versions earlier than 22.4R3; * 23.2 versions earlier than 23.2R1-S2, 23.2R2.

Junos OS Evolved:

* All versions earlier than 21.4R3-S5-EVO; * 22.1-EVO versions earlier than 22.1R3-S4-EVO; * 22.2-EVO versions earlier than 22.2R3-S3-EVO; * 22.3-EVO versions earlier than 22.3R3-S1-EVO; * 22.4-EVO versions earlier than 22.4R3-EVO; * 23.2-EVO versions earlier than 23.2R2-EVO.

Scores

CVSSScoreVectorSource
4.08.2 HighCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:Ljuniper
3.15.9 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:Hjuniper

Weaknesses

  • CWE-754 Improper Check for Unusual or Exceptional Conditions

Affected Products

ProductVersions
Junos OSJuniper Networks
  • 20.4 to before 20.4R3-S10Affected
  • 21.2 to before 21.2R3-S7Affected
  • 21.4 to before 21.4R3-S5Affected
  • 22.1 to before 22.1R3-S4Affected
  • 22.2 to before 22.2R3-S3Affected
  • 22.3 to before 22.3R3-S1Affected
  • 22.4 to before 22.4R3Affected
  • 23.2 to before 23.2R1-S2, 23.2R2Affected
Junos OS EvolvedJuniper Networks
  • 21.4-EVO to before 21.4R3-S5-EVOAffected
  • 22.1-EVO to before 22.1R3-S4-EVOAffected
  • 22.2-EVO to before 22.2R3-S3-EVOAffected
  • 22.3-EVO to before 22.3R3-S1-EVOAffected
  • 22.4-EVO to before 22.4R3-EVOAffected
  • 23.2-EVO to before 23.2R2-EVOAffected

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.