medium
6.5
CWE
20
Advisory Published
Updated

CVE-2023-28981: Junos OS and Junos OS Evolved: If malformed IPv6 router advertisements are received, memory corruption will occur which causes an rpd crash

First published: Mon Apr 17 2023(Updated: )

An Improper Input Validation vulnerability in the kernel of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS). If the receipt of router advertisements is enabled on an interface and a specifically malformed RA packet is received, memory corruption will happen which leads to an rpd crash. This issue affects: Juniper Networks Junos OS 20.3 versions prior to 20.3R3-S5; 20.4 versions prior to 20.4R3-S3; 21.1 versions prior to 21.1R3-S4; 21.2 versions prior to 21.2R3; 21.3 versions prior to 21.3R3; 21.4 versions prior to 21.4R2; 22.1 versions prior to 22.1R2. Juniper Networks Junos OS Evolved 20.3-EVO version 20.3R1-EVO and later versions; 20.4-EVO versions prior to 20.4R3-S6-EVO; 21.3-EVO versions prior to 21.3R3-EVO; 21.4-EVO versions prior to 21.4R2-EVO; 22.1-EVO versions prior to 22.1R2-EVO.

Credit: sirt@juniper.net

Affected SoftwareAffected VersionHow to fix
Juniper JUNOS=20.3
Juniper JUNOS=20.3-r1
Juniper JUNOS=20.3-r1-s1
Juniper JUNOS=20.3-r1-s2
Juniper JUNOS=20.3-r2
Juniper JUNOS=20.3-r2-s1
Juniper JUNOS=20.3-r3
Juniper JUNOS=20.3-r3-s1
Juniper JUNOS=20.3-r3-s2
Juniper JUNOS=20.3-r3-s3
Juniper JUNOS=20.3-r3-s4
Juniper JUNOS=20.4
Juniper JUNOS=20.4-r1
Juniper JUNOS=20.4-r1-s1
Juniper JUNOS=20.4-r2
Juniper JUNOS=20.4-r2-s1
Juniper JUNOS=20.4-r2-s2
Juniper JUNOS=20.4-r3
Juniper JUNOS=20.4-r3-s1
Juniper JUNOS=20.4-r3-s2
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=21.3
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=21.4
Juniper JUNOS=21.4-r1
Juniper JUNOS=21.4-r1-s1
Juniper JUNOS=21.4-r1-s2
Juniper JUNOS=22.1-r1
Juniper JUNOS=22.1-r1-s1
Juniper JUNOS=22.1-r1-s2
Juniper Junos Os Evolved=20.3-r1
Juniper Junos Os Evolved=20.3-r1-s1
Juniper Junos Os Evolved=20.3-r1-s2
Juniper Junos Os Evolved=20.3-r1-s3
Juniper Junos Os Evolved=20.3-r2
Juniper Junos Os Evolved=20.4
Juniper Junos Os Evolved=20.4-r1
Juniper Junos Os Evolved=20.4-r1-s1
Juniper Junos Os Evolved=20.4-r1-s2
Juniper Junos Os Evolved=20.4-r2
Juniper Junos Os Evolved=20.4-r2-s1
Juniper Junos Os Evolved=20.4-r2-s2
Juniper Junos Os Evolved=20.4-r2-s3
Juniper Junos Os Evolved=20.4-r3
Juniper Junos Os Evolved=20.4-r3-s1
Juniper Junos Os Evolved=20.4-r3-s2
Juniper Junos Os Evolved=20.4-r3-s3
Juniper Junos Os Evolved=20.4-r3-s4
Juniper Junos Os Evolved=20.4-r3-s5
Juniper Junos Os Evolved=21.3
Juniper Junos Os Evolved=21.3-r1
Juniper Junos Os Evolved=21.3-r1-s1
Juniper Junos Os Evolved=21.3-r2
Juniper Junos Os Evolved=21.3-r2-s1
Juniper Junos Os Evolved=21.3-r2-s2
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=22.1-r1
Juniper Junos Os Evolved=22.1-r1-s1
Juniper Junos Os Evolved=22.1-r1-s2

Remedy

The following software releases have been updated to resolve this specific issue: Junos OS Evolved: 20.4R3-S6-EVO, 21.3R3-EVO, 21.4R2-EVO, 22.1R2-EVO, 22.2R1-EVO, and all subsequent releases. Junos OS: 20.3R3-S5, 20.4R3-S3, 21.1R3-S4, 21.2R3, 21.3R3, 21.4R2, 22.1R2, 22.2R1, and all subsequent releases.

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2023-28981?

    The severity of CVE-2023-28981 is rated as medium with a CVSS score of 6.5.

  • How can I mitigate the vulnerability in Juniper Networks Junos OS affected by CVE-2023-28981?

    To mitigate the vulnerability in Juniper Networks Junos OS affected by CVE-2023-28981, apply the patches provided by Juniper Networks as per their advisory JSA70607.

  • What is the impact of CVE-2023-28981 on the affected systems?

    CVE-2023-28981 allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS) on the affected Juniper Networks Junos OS and Junos OS Evolved systems.

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