medium
5.5
CWE
401 770
Advisory Published
Updated

CVE-2022-22240: Junos OS and Junos OS Evolved: An rpd memory leak might be observed while running a specific cli command in a RIB sharding scenario

First published: Tue Oct 18 2022(Updated: )

An Allocation of Resources Without Limits or Throttling and a Missing Release of Memory after Effective Lifetime vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a locally authenticated low privileged attacker to cause a Denial of Sevice (DoS). In a high-scaled BGP routing environment with rib-sharding enabled, two issues may occur when executing a specific CLI command. One is a memory leak issue with rpd where the leak rate is not constant, and the other is a temporary spike in rpd memory usage during command execution. This issue affects: Juniper Networks Junos OS 19.4 versions prior to 19.4R3-S9; 20.2 versions prior to 20.2R3-S5; 20.3 versions prior to 20.3R3-S2; 20.4 versions prior to 20.4R3-S1; 21.1 versions prior to 21.1R3; 21.2 versions prior to 21.2R1-S2, 21.2R2-S1, 21.2R3; 21.3 versions prior to 21.3R2. Juniper Networks Junos OS Evolved All versions prior to 20.4R3-S1-EVO; 21.1-EVO version 21.1R1-EVO and later versions; 21.2-EVO versions prior to 21.2R1-S2-EVO, 21.2R3-EVO; 21.3-EVO versions prior to 21.3R2-EVO. This issue does not affect Juniper Networks Junos OS versions prior to 19.2R1.

Credit: sirt@juniper.net

Affected SoftwareAffected VersionHow to fix
Juniper Junos=19.4
Juniper Junos=19.4-r1
Juniper Junos=19.4-r1-s1
Juniper Junos=19.4-r1-s2
Juniper Junos=19.4-r1-s3
Juniper Junos=19.4-r1-s4
Juniper Junos=19.4-r2
Juniper Junos=19.4-r2-s1
Juniper Junos=19.4-r2-s2
Juniper Junos=19.4-r2-s3
Juniper Junos=19.4-r2-s4
Juniper Junos=19.4-r2-s5
Juniper Junos=19.4-r2-s6
Juniper Junos=19.4-r3
Juniper Junos=19.4-r3-s1
Juniper Junos=19.4-r3-s2
Juniper Junos=19.4-r3-s3
Juniper Junos=19.4-r3-s4
Juniper Junos=19.4-r3-s5
Juniper Junos=19.4-r3-s6
Juniper Junos=19.4-r3-s7
Juniper Junos=19.4-r3-s8
Juniper Junos=20.2
Juniper Junos=20.2-r1
Juniper Junos=20.2-r1-s1
Juniper Junos=20.2-r1-s2
Juniper Junos=20.2-r1-s3
Juniper Junos=20.2-r2
Juniper Junos=20.2-r2-s1
Juniper Junos=20.2-r2-s2
Juniper Junos=20.2-r2-s3
Juniper Junos=20.2-r3
Juniper Junos=20.2-r3-s1
Juniper Junos=20.2-r3-s2
Juniper Junos=20.2-r3-s3
Juniper Junos=20.2-r3-s4
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=20.4
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=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=21.2
Juniper Junos=21.2-r1
Juniper Junos=21.2-r1-s1
Juniper Junos=21.2-r2
Juniper Junos=21.3
Juniper Junos=21.3-r1
Juniper Junos=21.3-r1-s1
Juniper Junos=21.3-r1-s2
Juniper Networks Junos OS<20.4
Juniper Networks Junos OS=20.4
Juniper Networks Junos OS=20.4-r1
Juniper Networks Junos OS=20.4-r1-s1
Juniper Networks Junos OS=20.4-r1-s2
Juniper Networks Junos OS=20.4-r2
Juniper Networks Junos OS=20.4-r2-s1
Juniper Networks Junos OS=20.4-r2-s2
Juniper Networks Junos OS=20.4-r2-s3
Juniper Networks Junos OS=20.4-r3
Juniper Networks Junos OS=21.1-r1
Juniper Networks Junos OS=21.1-r1-s1
Juniper Networks Junos OS=21.1-r2
Juniper Networks Junos OS=21.1-r3
Juniper Networks Junos OS=21.1-r3-s1
Juniper Networks Junos OS=21.2
Juniper Networks Junos OS=21.2-r1
Juniper Networks Junos OS=21.2-r1-s1
Juniper Networks Junos OS=21.2-r2
Juniper Networks Junos OS=21.2-r2-s1
Juniper Networks Junos OS=21.2-r2-s2
Juniper Networks Junos OS=21.3
Juniper Networks Junos OS=21.3-r1
Juniper Networks Junos OS=21.3-r1-s1

Remedy

The following software releases have been updated to resolve this specific issue: Junos OS:19.4R3-S9, 20.2R3-S5, 20.3R3-S2, 20.4R3-S1, 21.1R3, 21.2R1-S2, 21.2R2-S1, 21.2R3, 21.3R2, 21.4R1, and all subsequent releases. Junos OS Evolved: 20.4R3-S1-EVO, 21.2R1-S2-EVO, 21.2R3-EVO, 21.3R2-EVO, 21.4R1-EVO, and all subsequent releases.

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2022-22240?

    CVE-2022-22240 has been assigned a CVSS score indicating a high severity due to the potential for a denial of service.

  • How do I fix CVE-2022-22240?

    To remediate CVE-2022-22240, update your Junos OS to the latest versions that contain the security patch.

  • Who is affected by CVE-2022-22240?

    CVE-2022-22240 affects certain versions of Juniper Networks Junos OS and Junos OS Evolved running on affected devices.

  • What type of vulnerability is CVE-2022-22240?

    CVE-2022-22240 is categorized as an 'Allocation of Resources Without Limits or Throttling' and 'Missing Release of Memory after Effective Lifetime' vulnerability.

  • Can CVE-2022-22240 be exploited by unauthenticated attackers?

    CVE-2022-22240 requires local authentication, meaning only authenticated low-privileged users can potentially exploit it.

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