Attacker Value
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Privileges Required
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CVE-2024-39558

Disclosure Date: July 10, 2024
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Description

An Unchecked Return Value vulnerability in the Routing Protocol Daemon (rpd) on Juniper Networks Junos OS and Juniper Networks Junos OS Evolved allows a logically adjacent, unauthenticated attacker sending a specific PIM packet to cause rpd to crash and restart, resulting in a Denial of Service (DoS), when PIM is configured with Multicast-only Fast Reroute (MoFRR). Continued receipt and processing of this packet may create a sustained Denial of Service (DoS) condition.

This issue is observed on Junos and Junos Evolved platforms where PIM is configured along with MoFRR. MoFRR tries to select the active path, but due to an internal timing issue, rpd is unable to select the forwarding next-hop towards the source, resulting in an rpd crash.

This issue affects:

Junos OS:

  • All versions before 20.4R3-S10,
  • from 21.2 before 21.2R3-S7,
  • from 21.4 before 21.4R3-S6,
  • from 22.1 before 22.1R3-S5,
  • from 22.2 before 22.2R3-S3,
  • from 22.3 before 22.3R3,
  • from 22.4 before 22.4R2; 

Junos OS Evolved:

  • All versions before 20.4R3-S10 -EVO,
  • All versions of 21.2-EVO,
  • from 21.4-EVO before 21.4R3-S9-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-EVO,
  • from 22.4-EVO before 22.4R2-EVO.

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CVSS V3 Severity and Metrics
Base Score:
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Impact Score:
Unknown
Exploitability Score:
Unknown
Vector:
Unknown
Attack Vector (AV):
Unknown
Attack Complexity (AC):
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Privileges Required (PR):
Unknown
User Interaction (UI):
Unknown
Scope (S):
Unknown
Confidentiality (C):
Unknown
Integrity (I):
Unknown
Availability (A):
Unknown

General Information

Vendors

  • Juniper Networks

Products

  • Junos OS,
  • Junos OS Evolved

Additional Info

Technical Analysis