high
7.5
CWE
401
Advisory Published
Updated

CVE-2023-22410: Junos OS: MX Series with MPC10/MPC11: When Suspicious Control Flow Detection (scfd) is enabled and an attacker is sending specific traffic, this causes a memory leak.

First published: Thu Jan 12 2023(Updated: )

A Missing Release of Memory after Effective Lifetime vulnerability in the Juniper Networks Junos OS on MX Series platforms with MPC10/MPC11 line cards, allows an unauthenticated adjacent attacker to cause a Denial of Service (DoS). Devices are only vulnerable when the Suspicious Control Flow Detection (scfd) feature is enabled. Upon enabling this specific feature, an attacker sending specific traffic is causing memory to be allocated dynamically and it is not freed. Memory is not freed even after deactivating this feature. Sustained processing of such traffic will eventually lead to an out of memory condition that prevents all services from continuing to function, and requires a manual restart to recover. The FPC memory usage can be monitored using the CLI command "show chassis fpc". On running the above command, the memory of AftDdosScfdFlow can be observed to detect the memory leak. This issue affects Juniper Networks Junos OS on MX Series: All versions prior to 20.2R3-S5; 20.3 version 20.3R1 and later versions.

Credit: sirt@juniper.net

Affected SoftwareAffected VersionHow to fix
Juniper JUNOS<20.2
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=20.3-r3-s2
Juniper JUNOS=20.3-r3-s3
Juniper JUNOS=20.3-r3-s4
Juniper JUNOS=20.3-r3-s5
Juniper JUNOS=20.3-r3-s6
Juniper Mx10
Juniper Mx10000
Juniper Mx10003
Juniper Mx10008
Juniper Mx10016
Juniper Mx104
Juniper Mx150
Juniper Mx2008
Juniper Mx2010
Juniper Mx2020
Juniper Mx204
Juniper Mx240
Juniper Mx40
Juniper Mx480
Juniper Mx5
Juniper Mx80
Juniper Mx960

Remedy

The following software releases have been updated to resolve this specific issue: 20.2R3-S5, 20.4R1, and all subsequent releases.

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Reference Links

Frequently Asked Questions

  • What is the vulnerability ID for this vulnerability?

    The vulnerability ID for this vulnerability is CVE-2023-22410.

  • What is the severity of CVE-2023-22410?

    The severity of CVE-2023-22410 is high with a severity value of 6.5.

  • Which platforms are affected by CVE-2023-22410?

    The Juniper Networks Junos OS on MX Series platforms with MPC10/MPC11 line cards are affected by CVE-2023-22410.

  • How can an attacker exploit CVE-2023-22410?

    An unauthenticated adjacent attacker can exploit CVE-2023-22410 to cause a Denial of Service (DoS).

  • How can I fix CVE-2023-22410?

    Updating to a fixed version of Juniper Networks Junos OS, such as 20.3-r3-s6, will fix CVE-2023-22410.

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