high
7.5
CWE
754 358
Advisory Published
Updated

CVE-2023-22393: Junos OS and Junos OS Evolved: RPD crash upon receipt of BGP route with invalid next-hop

First published: Thu Jan 12 2023(Updated: )

An Improper Check for Unusual or Exceptional Conditions vulnerability in BGP route processing of Juniper Networks Junos OS and Junos OS Evolved allows an attacker to cause Routing Protocol Daemon (RPD) crash by sending a BGP route with invalid next-hop resulting in a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue only affects systems without import policy configured. This issue affects: Juniper Networks Junos OS 21.1 versions prior to 21.1R3-S4; 21.2 versions prior to 21.2R3-S3; 21.3 versions prior to 21.3R3-S2; 21.4 versions prior to 21.4R2-S2, 21.4R3; 22.1 versions prior to 22.1R1-S2, 22.1R2; 22.2 versions prior to 22.2R1-S1, 22.2R2. Juniper Networks Junos OS Evolved 21.4-EVO versions prior to 21.4R2-S2-EVO, 21.4R3-EVO; 22.1-EVO versions prior to 22.1R1-S2-EVO, 22.1R2-EVO; 22.2-EVO versions prior to 22.2R1-S1-EVO, 22.2R2-EVO. This issue does not affect: Juniper Networks Junos OS versions prior to 21.1R1. Juniper Networks Junos OS Evolved versions prior to 21.3R1-EVO.

Credit: sirt@juniper.net

Affected SoftwareAffected VersionHow to fix
Juniper JUNOS=21.1
Juniper JUNOS=21.1-r1
Juniper JUNOS=21.1-r1-s1
Juniper JUNOS=21.1-r2
Juniper JUNOS=21.1-r2-s1
Juniper JUNOS=21.1-r2-s2
Juniper JUNOS=21.1-r3
Juniper JUNOS=21.1-r3-s1
Juniper JUNOS=21.1-r3-s2
Juniper JUNOS=21.1-r3-s3
Juniper JUNOS=21.2
Juniper JUNOS=21.2-r1
Juniper JUNOS=21.2-r1-s1
Juniper JUNOS=21.2-r1-s2
Juniper JUNOS=21.2-r2
Juniper JUNOS=21.2-r2-s1
Juniper JUNOS=21.2-r2-s2
Juniper JUNOS=21.2-r3
Juniper JUNOS=21.2-r3-s1
Juniper JUNOS=21.2-r3-s2
Juniper JUNOS=21.3
Juniper JUNOS=21.3-r1
Juniper JUNOS=21.3-r1-s1
Juniper JUNOS=21.3-r1-s2
Juniper JUNOS=21.3-r2
Juniper JUNOS=21.3-r2-s1
Juniper JUNOS=21.3-r2-s2
Juniper JUNOS=21.3-r3
Juniper JUNOS=21.3-r3-s1
Juniper JUNOS=21.4
Juniper JUNOS=21.4-r1
Juniper JUNOS=21.4-r1-s1
Juniper JUNOS=21.4-r1-s2
Juniper JUNOS=21.4-r2
Juniper JUNOS=21.4-r2-s1
Juniper JUNOS=22.1-r1
Juniper JUNOS=22.1-r1-s1
Juniper JUNOS=22.2-r1
Juniper Junos Os Evolved=21.4
Juniper Junos Os Evolved=21.4-r1
Juniper Junos Os Evolved=21.4-r1-s1
Juniper Junos Os Evolved=21.4-r1-s2
Juniper Junos Os Evolved=21.4-r2
Juniper Junos Os Evolved=21.4-r2-s1
Juniper Junos Os Evolved=22.1-r1
Juniper Junos Os Evolved=22.1-r1-s1
Juniper Junos Os Evolved=22.2-r1

Remedy

The following software releases have been updated to resolve this specific issue: Junos OS : 21.1R3-S4, 21.2R3-S3, 21.3R3-S2, 21.4R2-S2, 21.4R3, 22.1R1-S2, 22.1R2, 22.2R1-S1, 22.2R2, 22.3R1, and all subsequent releases. Junos OS Evolved : 21.4R2-S2-EVO, 21.4R3-EVO, 22.1R1-S2-EVO, 22.1R2-EVO, 22.2R1-S1-EVO, 22.2R2-EVO, 22.3R1-EVO, and all subsequent releases.

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Reference Links

Frequently Asked Questions

  • What is CVE-2023-22393?

    CVE-2023-22393 is an Improper Check for Unusual or Exceptional Conditions vulnerability in BGP route processing of Juniper Networks Junos OS and Junos OS Evolved.

  • How does CVE-2023-22393 affect Juniper JUNOS?

    CVE-2023-22393 affects Juniper JUNOS versions 21.1 and later.

  • How can an attacker exploit CVE-2023-22393?

    An attacker can exploit CVE-2023-22393 by sending a BGP route with an invalid next-hop, which could cause a Denial of Service (DoS) by crashing the Routing Protocol Daemon (RPD).

  • What is the severity of CVE-2023-22393?

    The severity of CVE-2023-22393 is high with a CVSS score of 7.5.

  • How can I fix CVE-2023-22393 in Juniper JUNOS?

    To fix CVE-2023-22393, it is recommended to upgrade to a patched version of Juniper JUNOS.

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