CVE-2024-21603

CVSS 3.1 Score 6.5 of 10 (medium)

Details

Published Jan 12, 2024
Updated: Jan 19, 2024
CWE ID 754

Summary

CVE-2024-21603 is an Improper Check for Unusual or Exceptional Conditions vulnerability affecting Juniper Networks Junos OS on specific MX Series devices. A network-based attacker with low privileges can cause a denial of service (DoS) by exploiting this issue. The vulnerability lies in the handling of configuration statistics for Source class usage (SCU) and Destination class usage (DCU) in the kernel. If the statistics are gathered through specific SNMP requests or CLI commands, the device will restart, leading to a sustained DoS. This issue only affects MX Series devices with MPC10, MPC11, or LC9600, and MX304. Junos OS versions earlier than 20.4R3-S9, 21.2R3-S6, 21.3R3-S5, 21.4R3, 22.1R3, 22.2R2, and 22.3R2 are vulnerable to this exploit.

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Affected Products

  • Juniper Junos

Affected Vendors

  • Juniper Networks

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