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CVE-2024-30390

Disclosure Date: April 12, 2024
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Description

An Improper Restriction of Excessive Authentication Attempts vulnerability in Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause a limited Denial of Service (DoS) to the management plane.

When an incoming connection was blocked because it exceeded the connections-per-second rate-limit, the system doesn’t consider existing connections anymore for subsequent connection attempts so that the connection limit can be exceeded.
This issue affects Junos OS Evolved:

  • All versions before 21.4R3-S4-EVO,
  • 22.1-EVO versions before 22.1R3-S3-EVO,
  • 22.2-EVO versions before 22.2R3-S2-EVO, 
  • 22.3-EVO versions before 22.3R2-S1-EVO, 22.3R3-EVO.

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CVSS V3 Severity and Metrics
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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