CVE-2024-21594

Summary

A Heap-based Buffer Overflow vulnerability in the Network Services Daemon (NSD) of Juniper Networks Junos OS allows authenticated, low privileged, local attacker to cause a Denial of Service (DoS).

On an SRX 5000 Series device, when executing a specific command repeatedly, memory is corrupted, which leads to a Flow Processing Daemon (flowd) crash.

The NSD process has to be restarted to restore services.

If this issue occurs, it can be checked with the following command:

user@host> request security policies check The following log message can also be observed:

Error: policies are out of sync for PFE node<number>.fpc<number>.pic<number>. This issue affects:

Juniper Networks Junos OS on SRX 5000 Series

  • All versions earlier than 20.4R3-S6;
  • 21.1 versions earlier than 21.1R3-S5;
  • 21.2 versions earlier than 21.2R3-S4;
  • 21.3 versions earlier than 21.3R3-S3;
  • 21.4 versions earlier than 21.4R3-S3;
  • 22.1 versions earlier than 22.1R3-S1;
  • 22.2 versions earlier than 22.2R3;
  • 22.3 versions earlier than 22.3R2.

Affected Software

VendorProductVersion RangeStatus
Juniper NetworksJunos OS0 < 20.4R3-S6affected
Juniper NetworksJunos OS21.1 < 21.1R3-S5affected
Juniper NetworksJunos OS21.2 < 21.2R3-S4affected
Juniper NetworksJunos OS21.3 < 21.3R3-S3affected
Juniper NetworksJunos OS21.4 < 21.4R3-S3affected
Juniper NetworksJunos OS22.1 < 22.1R3-S1affected
Juniper NetworksJunos OS22.2 < 22.2R3affected
Juniper NetworksJunos OS22.3 < 22.3R2affected

Weaknesses

  • CWE-122: CWE-122 Heap-based Buffer Overflow
  • 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