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Juniper Junos OS: 2024-01 Security Bulletin: Junos OS: MX Series: MPC3E memory leak with PTP configuration (JSA75740) (CVE-2024-21599)

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Juniper Junos OS: 2024-01 Security Bulletin: Junos OS: MX Series: MPC3E memory leak with PTP configuration (JSA75740) (CVE-2024-21599)

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
01/10/2024
Created
01/12/2024
Added
01/11/2024
Modified
01/22/2024

Description

A Missing Release of Memory after Effective Lifetime vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on MX Series allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS). If an MX Series device receives PTP packets on an MPC3E that doesn't support PTP this causes a memory leak which will result in unpredictable behavior and ultimately in an MPC crash and restart. To monitor for this issue, please use the following FPC vty level commands: show heap shows an increase in "LAN buffer" utilization and show clksync ptp nbr-upd-info shows non-zero "Pending PFEs" counter. This issue affects Juniper Networks Junos OS on MX Series with MPC3E: * All versions earlier than 20.4R3-S3; * 21.1 versions earlier than 21.1R3-S4; * 21.2 versions earlier than 21.2R3; * 21.3 versions earlier than 21.3R2-S1, 21.3R3; * 21.4 versions earlier than 21.4R2; * 22.1 versions earlier than 22.1R2.

Solution(s)

  • juniper-junos-os-upgrade-latest

References

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