juniper junos 跨界内存写

CVE编号

CVE-2021-31383

利用情况

暂无

补丁情况

N/A

披露时间

2021-10-20

漏洞描述

In Point to MultiPoint (P2MP) scenarios within established sessions between network or adjacent neighbors the improper use of a source to destination copy write operation combined with a Stack-based Buffer Overflow on certain specific packets processed by the routing protocol daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved sent by a remote unauthenticated network attacker causes the RPD to crash causing a Denial of Service (DoS). Continued receipt and processing of these packets will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS 19.2 versions prior to 19.2R3-S2; 19.3 versions prior to 19.3R2-S6, 19.3R3-S2; 19.4 versions prior to 19.4R1-S4, 19.4R2-S4, 19.4R3-S3; 20.1 versions prior to 20.1R2-S2, 20.1R3; 20.2 versions prior to 20.2R2-S3, 20.2R3; 20.3 versions prior to 20.3R2. This issue does not affect Juniper Networks Junos OS versions prior to 19.2R1. Juniper Networks Junos OS Evolved 20.1 versions prior to 20.1R3-EVO; 20.2 versions prior to 20.2R3-EVO; 20.3 versions prior to 20.3R2-EVO.

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/JSA11251

受影响软件情况

#	类型	厂商	产品	版本	影响面
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
	系统	juniper	junos	20.3	-
	运行在以下环境
	系统	juniper	junos_os_evolved	20.1	-
	运行在以下环境
	系统	juniper	junos_os_evolved	20.2	-
	运行在以下环境
	系统	juniper	junos_os_evolved	20.3	-

CVSS3评分 7.5

• 攻击路径 网络
• 攻击复杂度 低
• 权限要求 无
• 影响范围 未更改
• 用户交互 无
• 可用性 高
• 保密性 无
• 完整性 无

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

CWE-ID	漏洞类型
CWE-787	跨界内存写

Exp相关链接

- avd.aliyun.com