CVE-2024-21617

Summary

An Incomplete Cleanup vulnerability in Nonstop active routing (NSR) component of Juniper Networks Junos OS allows an adjacent, unauthenticated attacker to cause memory leak leading to Denial of Service (DoS).

On all Junos OS platforms, when NSR is enabled, a BGP flap will cause memory leak. A manual reboot of the system will restore the services.

Note: NSR is not supported on the SRX Series and is therefore not affected by this vulnerability. The memory usage can be monitored using the below commands.

user@host> show chassis routing-engine no-forwarding user@host> show system memory | no-more This issue affects:

Juniper Networks Junos OS

  • 21.2 versions earlier than 21.2R3-S5;
  • 21.3 versions earlier than 21.3R3-S4;
  • 21.4 versions earlier than 21.4R3-S4;
  • 22.1 versions earlier than 22.1R3-S2;
  • 22.2 versions earlier than 22.2R3-S2;
  • 22.3 versions earlier than 22.3R2-S1, 22.3R3;
  • 22.4 versions earlier than 22.4R1-S2, 22.4R2.

This issue does not affect Junos OS versions earlier than 20.4R3-S7.

Affected Software

VendorProductVersion RangeStatus
Juniper NetworksJunos OS21.2 < 21.2R3-S5affected
Juniper NetworksJunos OS21.3 < 21.3R3-S4affected
Juniper NetworksJunos OS21.4 < 21.4R3-S4affected
Juniper NetworksJunos OS22.1 < 22.1R3-S2affected
Juniper NetworksJunos OS22.2 < 22.2R3-S2affected
Juniper NetworksJunos OS22.3 < 22.3R2-S1, 22.3R3affected
Juniper NetworksJunos OS22.4 < 22.4R1-S2, 22.4R2affected
Juniper NetworksJunos OS0 < 20.4R3-S7unaffected

Weaknesses

  • CWE-459: CWE-459 Incomplete Cleanup
  • Denial of Service (DoS)

Workarounds

There are no known workarounds for this issue.

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References