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CVE-2021-0288— Junos OS: MX Series, EX9200 Series: FPC may crash upon receipt of specific MPLS packet affecting Trio-based MPCs

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。 Junos OS 存在代码问题漏洞，该漏洞源于设备在处理特定MPLS数据包中的漏洞可能导致FPC崩溃并导致拒绝服务条件。

CVSS 6.5 · Medium EPSS 0.38% · P29

Possible ATT&CK Techniques 1 AI

T1498 · Network Denial of Service
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I. Basic Information for CVE-2021-0288

Vulnerability Information
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Vulnerability Title
Junos OS: MX Series, EX9200 Series: FPC may crash upon receipt of specific MPLS packet affecting Trio-based MPCs
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the processing of specific MPLS packets in Juniper Networks Junos OS on MX Series and EX9200 Series devices with Trio-based MPCs (Modular Port Concentrators) may cause FPC to crash and lead to a Denial of Service (DoS) condition. Continued receipt of this packet will sustain the Denial of Service (DoS) condition. This issue only affects MX Series and EX9200 Series with Trio-based PFEs (Packet Forwarding Engines). This issue affects Juniper Networks Junos OS on MX Series, EX9200 Series: 17.3 versions prior to 17.3R3-S12; 17.4 versions prior to 17.4R2-S13, 17.4R3-S5; 18.1 versions prior to 18.1R3-S13; 18.2 versions prior to 18.2R3-S8; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R2-S8, 18.4R3-S8; 19.1 versions prior to 19.1R3-S5; 19.2 versions prior to 19.2R3-S2; 19.3 versions prior to 19.3R2-S6, 19.3R3-S3; 19.4 versions prior to 19.4R1-S4, 19.4R2-S4, 19.4R3-S2; 20.1 versions prior to 20.1R3; 20.2 versions prior to 20.2R2-S2, 20.2R3; 20.3 versions prior to 20.3R2; 20.4 versions prior to 20.4R2;
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 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
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。 Junos OS 存在代码问题漏洞，该漏洞源于设备在处理特定MPLS数据包中的漏洞可能导致FPC崩溃并导致拒绝服务条件。
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 17.3 ~ 17.3R3-S12 -

II. Public POCs for CVE-2021-0288

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III. Intelligence Information for CVE-2021-0288

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Vendor Advisories for CVE-2021-0288 (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-2021-0287 6.5 MEDIUM Junos OS and Junos OS Evolved: RPD could crash in SR-ISIS/MPLS environment due to a flap o
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

V. Comments for CVE-2021-0288

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