medium
6
CWE
401
Advisory Published
Updated

CVE-2024-39539: Junos OS: MX Series: Continuous subscriber logins will lead to a memory leak and eventually an FPC crash

First published: Thu Jul 11 2024(Updated: )

A Missing Release of Memory after Effective Lifetime vulnerability in Juniper Networks Junos OS on MX Series allows an unauthenticated adjacent attacker to cause a Denial-of-Service (DoS). In a subscriber management scenario continuous subscriber logins will trigger a memory leak and eventually lead to an FPC crash and restart. This issue affects Junos OS on MX Series: * All version before 21.2R3-S6, * 21.4 versions before 21.4R3-S6, * 22.1 versions before 22.1R3-S5, * 22.2 versions before 22.2R3-S3,  * 22.3 versions before 22.3R3-S2, * 22.4 versions before 22.4R3, * 23.2 versions before 23.2R2.

Credit: sirt@juniper.net

Affected SoftwareAffected VersionHow to fix
All of
Any of
Junos OS Evolved<21.2
Junos OS Evolved=21.2
Junos OS Evolved=21.2-r1
Junos OS Evolved=21.2-r1-s1
Junos OS Evolved=21.2-r1-s2
Junos OS Evolved=21.2-r2
Junos OS Evolved=21.2-r2-s1
Junos OS Evolved=21.2-r2-s2
Junos OS Evolved=21.2-r3
Junos OS Evolved=21.2-r3-s1
Junos OS Evolved=21.2-r3-s2
Junos OS Evolved=21.2-r3-s3
Junos OS Evolved=21.2-r3-s4
Junos OS Evolved=21.2-r3-s5
Junos OS Evolved=21.4
Junos OS Evolved=21.4-r1
Junos OS Evolved=21.4-r1-s1
Junos OS Evolved=21.4-r1-s2
Junos OS Evolved=21.4-r2
Junos OS Evolved=21.4-r2-s1
Junos OS Evolved=21.4-r2-s2
Junos OS Evolved=21.4-r3
Junos OS Evolved=21.4-r3-s1
Junos OS Evolved=21.4-r3-s2
Junos OS Evolved=21.4-r3-s3
Junos OS Evolved=21.4-r3-s4
Junos OS Evolved=21.4-r3-s5
Junos OS Evolved=22.1
Junos OS Evolved=22.1-r1
Junos OS Evolved=22.1-r1-s1
Junos OS Evolved=22.1-r1-s2
Junos OS Evolved=22.1-r2
Junos OS Evolved=22.1-r2-s1
Junos OS Evolved=22.1-r2-s2
Junos OS Evolved=22.1-r3
Junos OS Evolved=22.1-r3-s1
Junos OS Evolved=22.1-r3-s2
Junos OS Evolved=22.1-r3-s3
Junos OS Evolved=22.1-r3-s4
Junos OS Evolved=22.2
Junos OS Evolved=22.2-r1
Junos OS Evolved=22.2-r1-s1
Junos OS Evolved=22.2-r1-s2
Junos OS Evolved=22.2-r2
Junos OS Evolved=22.2-r2-s1
Junos OS Evolved=22.2-r2-s2
Junos OS Evolved=22.2-r3
Junos OS Evolved=22.2-r3-s1
Junos OS Evolved=22.2-r3-s2
Junos OS Evolved=22.3
Junos OS Evolved=22.3-r1
Junos OS Evolved=22.3-r1-s1
Junos OS Evolved=22.3-r1-s2
Junos OS Evolved=22.3-r2
Junos OS Evolved=22.3-r2-s1
Junos OS Evolved=22.3-r2-s2
Junos OS Evolved=22.3-r3
Junos OS Evolved=22.3-r3-s1
Junos OS Evolved=22.4
Junos OS Evolved=22.4-r1
Junos OS Evolved=22.4-r1-s1
Junos OS Evolved=22.4-r1-s2
Junos OS Evolved=22.4-r2
Junos OS Evolved=22.4-r2-s1
Junos OS Evolved=22.4-r2-s2
Junos OS Evolved=23.2
Junos OS Evolved=23.2-r1
Junos OS Evolved=23.2-r1-s1
Junos OS Evolved=23.2-r1-s2
Any of
Juniper MX Series
Juniper MX10
Juniper MX10000
Juniper MX10003
Juniper MX10004
Juniper MX10008
Juniper MX10016
Juniper MX104
Juniper MX150
Juniper MX2008
Juniper MX2010
Juniper MX2020
Juniper MX204
Juniper MX240
Juniper MX304
Juniper MX40
Juniper MX480
Juniper MX5
Juniper MX80
Juniper MX960
Juniper JUNOS<21.2R3-S6<21.4R3-S6<22.1R3-S5<22.2R3-S3<22.3R3-S2<22.4R3<23.2R2

Remedy

The following software releases have been updated to resolve this specific issue: 21.2R3-S6, 21.4R3-S6, 22.1R3-S5, 22.2R3-S3, 22.3R3-S2, 22.4R3, 23.2R2, 23.4R1, and all subsequent releases.

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2024-39539?

    CVE-2024-39539 is classified as a Denial-of-Service (DoS) vulnerability.

  • How do I mitigate CVE-2024-39539?

    To mitigate CVE-2024-39539, you should update your Junos OS to a version that includes the necessary fixes.

  • What software versions are affected by CVE-2024-39539?

    CVE-2024-39539 affects Junos OS versions prior to 21.2R3-S6, 21.4R3-S6, 22.1R3-S5, 22.2R3-S3, 22.3R3-S2, 22.4R3, and 23.2R2.

  • Can CVE-2024-39539 be exploited remotely?

    Yes, CVE-2024-39539 can be exploited by an unauthenticated adjacent attacker.

  • What is the impact of CVE-2024-39539 on system performance?

    The impact of CVE-2024-39539 includes potential Denial-of-Service due to a memory leak triggered by continuous subscriber logins.

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