Riskcovery

CVE-2023-44193

Junos OS: MX Series: An FPC crash is observed when CFM is enabled in a VPLS scenario and a specific LDP related command is run

State
Published
Severity
5.5 Medium
Published
Oct 12, 2023
Updated
Sep 17, 2024
Reserved
Sep 26, 2023

Read the record on cve.org

Description

An Improper Release of Memory Before Removing Last Reference vulnerability in Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows a local, low privileged attacker to cause an FPC crash, leading to Denial of Service (DoS).

On all Junos MX Series with MPC1 - MPC9, LC480, LC2101, MX10003, and MX80, when Connectivity-Fault-Management (CFM) is enabled in a VPLS scenario, and a specific LDP related command is run, an FPC will crash and reboot. Continued execution of this specific LDP command can lead to sustained Denial of Service condition.

This issue affects:

Juniper Networks Junos OS on MX Series:

* All versions prior to 20.4R3-S7; * 21.1 versions prior to 21.1R3-S5; * 21.2 versions prior to 21.2R3-S4; * 21.3 versions prior to 21.3R3-S4; * 21.4 versions prior to 21.4R3-S3; * 22.1 versions prior to 22.1R3-S1; * 22.2 versions prior to 22.2R2-S1, 22.2R3; * 22.3 versions prior to 22.3R1-S2, 22.3R2.

Scores

CVSSScoreVectorSource
3.15.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hjuniper

Weaknesses

  • CWE-401 Improper Release of Memory Before Removing Last Reference

Affected Products

ProductVersions
Junos OSJuniper Networks
  • before 20.4R3-S7Affected
  • 21.1 to before 21.1R3-S5Affected
  • 21.2 to before 21.2R3-S4Affected
  • 21.3 to before 21.3R3-S4Affected
  • 21.4 to before 21.4R3-S3Affected
  • 22.1 to before 22.1R3-S1Affected
  • 22.2 to before 22.2R2-S1, 22.2R3Affected
  • 22.3 to before 22.3R1-S2, 22.3R2Affected

References

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