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Privileges Required
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0

CVE-2024-39513

Disclosure Date: July 10, 2024
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Description

An Improper Input Validation vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved allows a local, low-privileged attacker to cause a Denial of Service (DoS).

When a specific “clear” command is run, the Advanced Forwarding Toolkit manager (evo-aftmand-bt or evo-aftmand-zx) crashes and restarts.

The crash impacts all traffic going through the FPCs, causing a DoS. Running the command repeatedly leads to a sustained DoS condition.
This issue affects Junos OS Evolved: 

  • All versions before 20.4R3-S9-EVO, 
  • from 21.2-EVO before 21.2R3-S7-EVO, 
  • from 21.3-EVO before 21.3R3-S5-EVO, 
  • from 21.4-EVO before 21.4R3-S6-EVO, 
  • from 22.1-EVO before 22.1R3-S4-EVO, 
  • from 22.2-EVO before 22.2R3-S3-EVO, 
  • from 22.3-EVO before 22.3R3-S3-EVO, 
  • from 22.4-EVO before 22.4R3-EVO,
  • from 23.2-EVO before 23.2R2-EVO.

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