CVE-2024-21598

Summary

An Improper Validation of Syntactic Correctness of Input vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a network-based, unauthenticated attacker to cause a Denial of Service (DoS).

If a BGP update is received over an established BGP session which contains a tunnel encapsulation attribute with a specifically malformed TLV, rpd will crash and restart.

This issue affects Juniper Networks Junos OS:

  • 20.4 versions 20.4R1 and later versions earlier than 20.4R3-S9;
  • 21.2 versions earlier than 21.2R3-S7;
  • 21.3 versions earlier than 21.3R3-S5;
  • 21.4 versions earlier than 21.4R3-S5;
  • 22.1 versions earlier than 22.1R3-S4;
  • 22.2 versions earlier than 22.2R3-S3;
  • 22.3 versions earlier than 22.3R3-S1;
  • 22.4 versions earlier than 22.4R3;
  • 23.2 versions earlier than 23.2R1-S2, 23.2R2;

Junos OS Evolved:

  • 20.4-EVO versions 20.4R1-EVO and later versions earlier than 20.4R3-S9-EVO;
  • 21.2-EVO versions earlier than 21.2R3-S7-EVO;
  • 21.3-EVO versions earlier than 21.3R3-S5-EVO;
  • 21.4-EVO versions earlier than 21.4R3-S5-EVO;
  • 22.1-EVO versions earlier than 22.1R3-S4-EVO;
  • 22.2-EVO versions earlier than 22.2R3-S3-EVO;
  • 22.3-EVO versions earlier than 22.3R3-S1-EVO;
  • 22.4-EVO versions earlier than 22.4R3-EVO;
  • 23.2-EVO versions earlier than 23.2R1-S2-EVO, 23.2R2-EVO;

This issue does not affect Juniper Networks

  • Junos OS versions earlier than 20.4R1;
  • Junos OS Evolved versions earlier than 20.4R1-EVO.

This is a related but separate issue than the one described in JSA79095.

Affected Software

VendorProductVersion RangeStatus
Juniper NetworksJunos OS20.4 < 20.4R3-S9affected
Juniper NetworksJunos OS21.2 < 21.2R3-S7affected
Juniper NetworksJunos OS21.3 < 21.3R3-S5affected
Juniper NetworksJunos OS21.4 < 21.4R3-S5affected
Juniper NetworksJunos OS22.1 < 22.1R3-S4affected
Juniper NetworksJunos OS22.2 < 22.2R3-S3affected
Juniper NetworksJunos OS22.3 < 22.3R3-S1affected
Juniper NetworksJunos OS22.4 < 22.4R3affected
Juniper NetworksJunos OS23.2 < 23.2R1-S2, 23.2R2affected
Juniper NetworksJunos OS Evolved20.4-EVO < 20.4R3-S9-EVOaffected
Juniper NetworksJunos OS Evolved21.2-EVO < 21.2R3-S7-EVOaffected
Juniper NetworksJunos OS Evolved21.3-EVO < 21.3R3-S5-EVOaffected
Juniper NetworksJunos OS Evolved21.4-EVO < 21.4R3-S5-EVOaffected
Juniper NetworksJunos OS Evolved22.1-EVO < 22.1R3-S4-EVOaffected
Juniper NetworksJunos OS Evolved22.2-EVO < 22.2R3-S3-EVOaffected
Juniper NetworksJunos OS Evolved22.3-EVO < 22.3R3-S1-EVOaffected
Juniper NetworksJunos OS Evolved22.4-EVO < 22.4R3-EVOaffected
Juniper NetworksJunos OS Evolved23.2-EVO < 23.2R1-S2-EVO, 23.2R2-EVOaffected

Weaknesses

  • CWE-1286: CWE-1286 Improper Validation of Syntactic Correctness of Input
  • Denial of Service (DoS)

Workarounds

There are no known workarounds for this issue.

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: partial

CVE Program Container

Additional References

References