多款 Juniper Networks拒绝服务漏洞

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2023-12-01 16:53:32 Ali_nvd 来源：ZONE.CI 全球网 0 阅读模式

多款 Juniper Networks拒绝服务漏洞

CVE编号

CVE-2021-0217

利用情况

暂无

补丁情况

N/A

披露时间

2021-01-16

漏洞描述

A vulnerability in processing of certain DHCP packets from adjacent clients on EX Series and QFX Series switches running Juniper Networks Junos OS with DHCP local/relay server configured may lead to exhaustion of DMA memory causing a Denial of Service (DoS). Over time, exploitation of this vulnerability may cause traffic to stop being forwarded, or to crashing of the fxpc process. When Packet DMA heap utilization reaches 99%, the system will become unstable. Packet DMA heap utilization can be monitored through the following command: user@junos# request pfe execute target fpc0 timeout 30 command "show heap" ID Base Total(b) Free(b) Used(b) % Name -- ---------- ----------- ----------- ----------- --- ----------- 0 213301a8 536870488 387228840 149641648 27 Kernel 1 91800000 8388608 3735120 4653488 55 DMA 2 92000000 75497472 74452192 1045280 1 PKT DMA DESC 3 d330000 335544320 257091400 78452920 23 Bcm_sdk 4 96800000 184549376 2408 184546968 99 Packet DMA <--- 5 903fffe0 20971504 20971504 0 0 Blob An indication of the issue occurring may be observed through the following log messages: Dec 10 08:07:00.124 2020 hostname fpc0 brcm_pkt_buf_alloc:523 (buf alloc) failed allocating packet buffer Dec 10 08:07:00.126 2020 hostname fpc0 (buf alloc) failed allocating packet buffer Dec 10 08:07:00.128 2020 hostname fpc0 brcm_pkt_buf_alloc:523 (buf alloc) failed allocating packet buffer Dec 10 08:07:00.130 2020 hostnameC fpc0 (buf alloc) failed allocating packet buffer This issue affects Juniper Networks Junos OS on EX Series and QFX Series: 17.4R3 versions prior to 17.4R3-S3; 18.1R3 versions between 18.1R3-S6 and 18.1R3-S11; 18.2R3 versions prior to 18.2R3-S6; 18.3R3 versions prior to 18.3R3-S4; 18.4R2 versions prior to 18.4R2-S5; 18.4R3 versions prior to 18.4R3-S6; 19.1 versions between 19.1R2 and 19.1R3-S3; 19.2 versions prior to 19.2R3-S1; 19.3 versions prior to 19.3R2-S5, 19.3R3; 19.4 versions prior to 19.4R2-S2, 19.4R3; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R1-S2, 20.2R2. Junos OS versions prior to 17.4R3 are unaffected by this vulnerability.

解决建议

建议您更新当前系统或软件至最新版，完成漏洞的修复。

参考链接
https://kb.juniper.net/JSA11107

受影响软件情况

1
#	类型	厂商	产品	版本	影响面
	运行在以下环境
	系统	juniper	junos	17.4	-
	运行在以下环境
	系统	juniper	junos	18.1	-
	运行在以下环境
	系统	juniper	junos	18.2	-
	运行在以下环境
	系统	juniper	junos	18.3	-
	运行在以下环境
	系统	juniper	junos	18.4	-
	运行在以下环境
	系统	juniper	junos	19.1	-
	运行在以下环境
	系统	juniper	junos	19.2	-
	运行在以下环境
	系统	juniper	junos	19.3	-
	运行在以下环境
	系统	juniper	junos	19.4	-
	运行在以下环境
	系统	juniper	junos	20.1	-
	运行在以下环境
	系统	juniper	junos	20.2	-
	运行在以下环境
	硬件	juniper	ex2300	-	-
	运行在以下环境
	硬件	juniper	ex2300-c	-	-
	运行在以下环境
	硬件	juniper	ex2300m	-	-
	运行在以下环境
	硬件	juniper	ex3400	-	-
	运行在以下环境
	硬件	juniper	ex4300	-	-
	运行在以下环境
	硬件	juniper	ex4300m	-	-
	运行在以下环境
	硬件	juniper	ex4600	-	-
	运行在以下环境
	硬件	juniper	ex4650	-	-
	运行在以下环境
	硬件	juniper	ex9200	-	-
	运行在以下环境
	硬件	juniper	ex9250	-	-
	运行在以下环境
	硬件	juniper	qfx10002	-	-
	运行在以下环境
	硬件	juniper	qfx10008	-	-
	运行在以下环境
	硬件	juniper	qfx10016	-	-
	运行在以下环境
	硬件	juniper	qfx5100	-	-
	运行在以下环境
	硬件	juniper	qfx5110	-	-
	运行在以下环境
	硬件	juniper	qfx5120	-	-
	运行在以下环境
	硬件	juniper	qfx5130	-	-
	运行在以下环境
	硬件	juniper	qfx5200	-	-
	运行在以下环境
	硬件	juniper	qfx5210	-	-
	运行在以下环境
	硬件	juniper	qfx5220	-	-