Junos OS: MX10k Series: 'show system firmware' CLI command may lead to LC480 or LC2101 line card reset

A Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in the method to collect FPC Ethernet firmware statistics of Juniper Networks Junos OS on MX10k Series allows a local, low-privileged attacker executing the 'show system firmware' CLI command to cause an LC480 or LC2101 line card to reset. On MX10k Series systems with LC480 or LC2101 line cards, repeated execution of the 'show system firmware' CLI command can cause the line card to crash and restart. Additionally, some time after the line card crashes, chassisd may also crash and restart, generating a core dump.This issue affects Junos OS on MX10k Series:  * all versions before 21.2R3-S10,  * from 21.4 before 21.4R3-S9,  * from 22.2 before 22.2R3-S7,  * from 22.4 before 22.4R3-S6,  * from 23.2 before 23.2R2-S2,  * from 23.4 before 23.4R2-S3,  * from 24.2 before 24.2R2.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

检查时间与使用时间(TOCTOU)的竞争条件

Juniper Networks Junos OS 安全漏洞

Juniper Networks Junos OS是美国瞻博网络（Juniper Networks）公司的一套专用于该公司的硬件设备的网络操作系统。该操作系统提供了安全编程接口和Junos SDK。 Juniper Networks Junos OS 21.2R3-S10之前版本、21.4R3-S9之前版本、22.2R3-S7之前版本、22.4R3-S6之前版本、23.2R2-S2之前版本、23.4R2-S3之前版本和24.2R2之前版本存在安全漏洞，该漏洞源于收集FPC以太网固件统计信息的方法存在竞争条

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