Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2021-0287— Junos OS and Junos OS Evolved: RPD could crash in SR-ISIS/MPLS environment due to a flap of an ISIS link in the network

Quick assessment

Affected
Juniper Networks Junos OS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Juniper Networks Junos OS Evolved是美国瞻博网络（Juniper Networks）公司的Junos OS 的升级版系统。 Junos OS Evolved 存在代码问题漏洞，该漏洞源于设备配置了用于分段路由和基于传感器的统计信息的ISIS灵活算法，网络中ISIS链路的一个襟翼可以导致路由进程守护程序崩溃并重新启动，从而导致拒绝服务。以下产品及版本受到影响：Junos OS 19.4, 20.1, 20.2, 20.3. This issue affects Junos O

CVSS 6.5 · Medium EPSS 0.37% · P31
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2021-0287

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Junos OS and Junos OS Evolved: RPD could crash in SR-ISIS/MPLS environment due to a flap of an ISIS link in the network
Source: CVE Program / CVE List V5
Vulnerability Description
In a Segment Routing ISIS (SR-ISIS)/MPLS environment, on Juniper Networks Junos OS and Junos OS Evolved devices, configured with ISIS Flexible Algorithm for Segment Routing and sensor-based statistics, a flap of a ISIS link in the network, can lead to a routing process daemon (RPD) crash and restart, causing a Denial of Service (DoS). Continued link flaps will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS: 19.4 versions prior to 19.4R1-S4, 19.4R3-S2; 20.1 versions prior to 20.1R2-S1, 20.1R3; 20.2 versions prior to 20.2R2-S2, 20.2R3; 20.3 versions prior to 20.3R2; Juniper Networks Junos OS Evolved: 20.3-EVO versions prior to 20.3R2-EVO; 20.4-EVO versions prior to 20.4R2-EVO. This issue does not affect: Juniper Networks Junos OS releases prior to 19.4R1. Juniper Networks Junos OS Evolved releases prior to 19.4R1-EVO.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对因果或异常条件的不恰当检查
Source: CVE Program / CVE List V5
Vulnerability Title
Juniper Networks Junos OS Evolved 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Juniper Networks Junos OS Evolved是美国瞻博网络（Juniper Networks）公司的Junos OS 的升级版系统。 Junos OS Evolved 存在代码问题漏洞，该漏洞源于设备配置了用于分段路由和基于传感器的统计信息的ISIS灵活算法，网络中ISIS链路的一个襟翼可以导致路由进程守护程序崩溃并重新启动，从而导致拒绝服务。以下产品及版本受到影响：Junos OS 19.4, 20.1, 20.2, 20.3. This issue affects Junos O
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Juniper Networks Junos OS unspecified ~ 19.4R1 -
Juniper Networks Junos OS Evolved unspecified ~ 19.4R1-EVO -

II. Public POCs for CVE-2021-0287

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2021-0287

请登录查看更多情报信息。

Vendor Advisories for CVE-2021-0287 (1)

Same Patch Batch · Juniper Networks · 2021-07-15 · 19 CVEs total

CVE-2021-0276 9.8 CRITICAL Steel-Belted Radius Carrier Edition: Remote code execution vulnerability when EAP Authenti
CVE-2021-0277 8.8 HIGH Junos OS and Junos OS Evolved: LLDP Out-of-Bounds Read vulnerability in l2cpd
CVE-2021-0278 8.8 HIGH Junos OS: J-Web allows a locally authenticated attacker to escalate their privileges to ro
CVE-2021-0279 8.6 HIGH Contrail Cloud: Hardcoded credentials for RabbitMQ service
CVE-2021-0285 7.5 HIGH Junos OS: QFX5000 Series and EX4600 Series: Continuous traffic destined to a device config
CVE-2021-0280 7.5 HIGH Junos OS: PTX Series, QFX10K Series: Upon receipt of specific packets BFD sessions might f
CVE-2021-0282 7.5 HIGH Junos OS: RPD crash while processing a specific BGP UPDATE when Multipath or add-path feat
CVE-2021-0283 7.5 HIGH Junos OS: Upon receipt of specific sequences of genuine packets destined to the device the
CVE-2021-0286 7.5 HIGH Junos OS Evolved: Specially crafted packets may cause the AFT manager process to crash and
CVE-2021-0288 6.5 MEDIUM Junos OS: MX Series, EX9200 Series: FPC may crash upon receipt of specific MPLS packet aff
CVE-2021-0289 6.5 MEDIUM Junos OS: User-defined ARP Policer isn't applied on Aggregated Ethernet (AE) interface unt
CVE-2021-0290 6.5 MEDIUM Junos OS: MX Series, EX9200 Series, SRX4600: Ethernet interface vulnerable to specially cr
CVE-2021-0291 6.5 MEDIUM Junos OS and Junos OS Evolved: A vulnerability allows a network based unauthenticated atta
CVE-2021-0292 6.5 MEDIUM Junos OS Evolved: Memory leak in arpd or ndp processes can lead to Denial of Service (DoS)
CVE-2021-0295 6.1 MEDIUM Junos OS: QFX10K Series: Denial of Service (DoS) upon receipt of DVMRP packets received on
CVE-2021-0281 5.9 MEDIUM Junos OS and Junos OS Evolved: Specific packets can trigger rpd crash when BGP Origin Vali
CVE-2021-0293 5.5 MEDIUM Junos OS: Out-of-memory condition and crashes can occur after executing a certain CLI comm
CVE-2021-0294 5.3 MEDIUM Junos OS: QFX5000 Series and EX4600 Series: Enhanced storm control might not work leading

IV. Related Vulnerabilities

Same product: Junos OS
Same vendor: Juniper Networks
Same weakness: CWE-754