CVE-2024-39560

Summary

An Improper Handling of Exceptional Conditions vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a logically adjacent downstream RSVP neighbor to cause kernel memory exhaustion, leading to a kernel crash, resulting in a Denial of Service (DoS).

The kernel memory leak and eventual crash will be seen when the downstream RSVP neighbor has a persistent error which will not be corrected.

System kernel memory can be monitored through the use of the 'show system kernel memory' command as shown below:

user@router> show system kernel memory   Real memory total/reserved: 4130268/ 133344 Kbytes kmem map free: 18014398509110220 Kbytes

This issue affects: Junos OS:

  • All versions before 20.4R3-S9,
  • All versions of 21.2,
  • from 21.4 before 21.4R3-S5,
  • from 22.1 before 22.1R3-S5,
  • from 22.2 before 22.2R3-S3,
  • from 22.3 before 22.3R3-S2,
  • from 22.4 before 22.4R3,
  • from 23.2 before 23.2R2;

Junos OS Evolved:

  • All versions before 21.4R3-S5-EVO,
  • from 22.1-EVO before 22.1R3-S5-EVO,
  • from 22.2-EVO before 22.2R3-S3-EVO,
  • from 22.3-EVO before 22.3R3-S2-EVO,
  • from 22.4-EVO before 22.4R3-EVO,
  • from 23.2-EVO before 23.2R2-EVO.

Affected Software

VendorProductVersion RangeStatus
Juniper NetworksJunos OS0 < 20.4R3-S9affected
Juniper NetworksJunos OS21.2R1 < 21.2*affected
Juniper NetworksJunos OS21.4 < 21.4R3-S5affected
Juniper NetworksJunos OS22.1 < 22.1R3-S5affected
Juniper NetworksJunos OS22.2 < 22.2R3-S3affected
Juniper NetworksJunos OS22.3 < 22.3R3-S2affected
Juniper NetworksJunos OS22.4 < 22.4R3affected
Juniper NetworksJunos OS23.2 < 23.2R2affected
Juniper NetworksJunos OS Evolved0 < 21.4R3-S5-EVOaffected
Juniper NetworksJunos OS Evolved22.1-EVO < 22.1R3-S5-EVOaffected
Juniper NetworksJunos OS Evolved22.2-EVO < 22.2R3-S3-EVOaffected
Juniper NetworksJunos OS Evolved22.3-EVO < 22.3R3-S2-EVOaffected
Juniper NetworksJunos OS Evolved22.4-EVO < 22.4R3-EVOaffected
Juniper NetworksJunos OS Evolved23.2-EVO < 23.2R2-EVOaffected

Weaknesses

  • CWE-755: CWE-755 Improper Handling of Exceptional Conditions

Workarounds

There are no known workarounds for this issue.

ADP Enrichment

CISA ADP Vulnrichment

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

CVE Program Container

Additional References

References