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Junos CVE-2023-44204

MEDIUM
Improper Validation of Syntactic Correctness of Input (CWE-1286)
2023-10-13 sirt@juniper.net
Juniper Denial Of Service Junos Junos Os Evolved
6.5
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
6.5 MEDIUM
AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

1
CVE Published
Oct 13, 2023 - 00:15 nvd
MEDIUM 6.5

DescriptionNVD

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

When a malformed BGP UPDATE packet is received over an established BGP session, the rpd crashes and restarts.

This issue affects both eBGP and iBGP implementations.

This issue affects:

Juniper Networks Junos OS

  • 21.4 versions prior to 21.4R3-S4;
  • 22.1 versions prior to 22.1R3-S3;
  • 22.2 versions prior to 22.2R3-S2;
  • 22.3 versions prior to 22.3R2-S2, 22.3R3;
  • 22.4 versions prior to 22.4R2-S1, 22.4R3;
  • 23.2 versions prior to 23.2R1, 23.2R2;

Juniper Networks Junos OS Evolved

  • 21.4 versions prior to 21.4R3-S5-EVO;
  • 22.1 versions prior to 22.1R3-S3-EVO;
  • 22.2 versions prior to 22.2R3-S3-EVO;
  • 22.3 versions prior to 22.3R2-S2-EVO;
  • 22.4 versions prior to 22.4R3-EVO;
  • 23.2 versions prior to 23.2R2-EVO;

AnalysisAI

An Improper Validation of Syntactic Correctness of Input vulnerability in Routing Protocol Daemon (rpd) Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network based. Rated medium severity (CVSS 6.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-1286. An Improper Validation of Syntactic Correctness of Input vulnerability in Routing Protocol Daemon (rpd) Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network based attacker to cause a Denial of Service (DoS). When a malformed BGP UPDATE packet is received over an established BGP session, the rpd crashes and restarts. This issue affects: Juniper Networks Junos OS * 21.4 versions prior to 21.4R3-S4; * 22.1 versions prior to 22.1R3-S3; * 22.2 versions prior to 22.2R3-S2; * 22.3 versions prior to 22.3R2-S2, 22.3R3; * 22.4 versions prior to 22.4R2-S1, 22.4R3; * 23.2 versions prior to 23.2R1, 23.2R2; Juniper Networks Junos OS Evolved * 21.4 versions prior to 21.4R3-S5-EVO; * 22.1 versions prior to 22.1R3-S3-EVO; * 22.2 versions prior to 22.2R3-S3-EVO; * 22.3 versions prior to 22.3R2-S2-EVO; * 22.4 versions prior to 22.4R3-EVO; * 23.2 versions prior to 23.2R2-EVO; Affected products include: Juniper Junos, Juniper Junos Os Evolved. Version information: prior to 21.4.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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CVE-2023-44204 vulnerability details – vuln.today
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