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

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2021-0209— Junos OS Evolved: Receipt of certain valid BGP update packets from BGP peers may cause RPD to core when using REGEX.

Quick assessment

Affected
Juniper Networks Junos OS Evolved
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和Junos OS Evolved都是美国瞻博网络（Juniper Networks）公司的产品。Juniper Networks Junos OS是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。Junos OS Evolved是Junos OS 的升级版系统。 Junos OS Evolved 存在缓冲区错误漏洞，攻击者可利用该漏洞使应用拒绝服务。以下产品及版本受到影响：Junos OS Evolved 19

CVSS 6.5 · Medium EPSS 0.44% · P36
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2021-0209

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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 Evolved: Receipt of certain valid BGP update packets from BGP peers may cause RPD to core when using REGEX.
Source: CVE Program / CVE List V5
Vulnerability Description
In Juniper Networks Junos OS Evolved an attacker sending certain valid BGP update packets may cause Junos OS Evolved to access an uninitialized pointer causing RPD to core leading to a Denial of Service (DoS). Continued receipt of these types of valid BGP update packets will cause an extended Denial of Service condition. RPD will require a restart to recover. An indicator of compromise is to see if the file rpd.re exists by issuing the command: show system core-dumps This issue affects: Juniper Networks Junos OS Evolved 19.4 versions prior to 19.4R2-S2-EVO; 20.1 versions prior to 20.1R1-S2-EVO, 20.1R2-S1-EVO. This issue does not affect Junos OS.
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
使用未经初始化的指针
Source: CVE Program / CVE List V5
Vulnerability Title
Juniper Networks Junos OS Evolved 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Juniper Networks Junos OS和Junos OS Evolved都是美国瞻博网络（Juniper Networks）公司的产品。Juniper Networks Junos OS是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。Junos OS Evolved是Junos OS 的升级版系统。 Junos OS Evolved 存在缓冲区错误漏洞，攻击者可利用该漏洞使应用拒绝服务。以下产品及版本受到影响：Junos OS Evolved 19
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 Evolved 19.4 ~ 19.4R2-S2-EVO -

II. Public POCs for CVE-2021-0209

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

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2021-0209

请登录查看更多情报信息。

Vendor Advisories for CVE-2021-0209 (1)

Same Patch Batch · Juniper Networks · 2021-01-15 · 19 CVEs total

CVE-2021-0211 10.0 CRITICAL Junos OS and Junos OS Evolved: Upon receipt of a specific BGP FlowSpec message network tra
CVE-2021-0208 8.8 HIGH Junos OS and Junos OS Evolved: In bidirectional LSP configurations, on MPLS egress router
CVE-2021-0203 8.6 HIGH Junos OS: EX and QFX5K Series: Storm Control does not work as expected when Redundant Trun
CVE-2021-0223 7.8 HIGH Junos OS: telnetd.real Local Privilege Escalation vulnerabilities in SUID binaries
CVE-2021-0218 7.8 HIGH Junos OS: Command injection vulnerability in license-check daemon
CVE-2021-0204 7.8 HIGH Junos OS: dexp Local Privilege Escalation vulnerabilities in SUID binaries
CVE-2021-0207 7.5 HIGH NFX250, NFX350, QFX5K Series, EX2300 Series, EX3400 Series, EX4300 Multigigabit, EX4600 Se
CVE-2021-0206 7.5 HIGH Junos OS: NFX Series, SRX Series: PFE may crash upon receipt of specific packet when SSL P
CVE-2021-0202 7.5 HIGH Junos OS: MX Series, EX9200 Series: Trio-based MPC memory leak when Integrated Routing and
CVE-2021-0217 7.4 HIGH Junos OS: EX Series and QFX Series: Memory leak issue processing specific DHCP packets
CVE-2021-0222 7.4 HIGH Junos OS: Upon receipt of certain protocol packets with invalid payloads a self-propagatin
CVE-2021-0210 6.8 MEDIUM Junos OS: Privilege escalation in J-Web due to arbitrary command and code execution via in
CVE-2021-0220 6.8 MEDIUM Junos Space: Shared secrets stored in recoverable format and directly exposed through the
CVE-2021-0219 6.7 MEDIUM Junos OS: Command injection vulnerability in 'request system software' CLI command
CVE-2021-0215 6.5 MEDIUM Junos OS: EX Series, QFX Series, SRX Branch Series, MX Series: Memory leak in packet forwa
CVE-2021-0221 6.5 MEDIUM Junos OS: QFX Series: Traffic loop Denial of Service (DoS) upon receipt of specific IP mul
CVE-2021-0205 5.8 MEDIUM Junos OS: MX Series: Dynamic filter fails to match IPv6 prefix
CVE-2021-0212 5.0 MEDIUM Contrail Networking: Administrator credentials are exposed in a plaintext file

IV. Related Vulnerabilities

Same product: Junos OS Evolved
Same vendor: Juniper Networks
Same weakness: CWE-824

V. Comments for CVE-2021-0209

No comments yet

Leave a comment