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CVE-2021-0270— Junos OS: PTX Series, QFX10K Series: A PTX/QFX FPC may restart unexpectedly with the "inline-Jflow" feature enabled on a large-scale deployment

CVSS 7.5 · High EPSS 0.33% · P56
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I. Basic Information for CVE-2021-0270

Vulnerability Information
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Vulnerability Title
Junos OS: PTX Series, QFX10K Series: A PTX/QFX FPC may restart unexpectedly with the "inline-Jflow" feature enabled on a large-scale deployment
Source: NVD (National Vulnerability Database)
Vulnerability Description
On PTX Series and QFX10k Series devices with the "inline-jflow" feature enabled, a use after free weakness in the Packet Forwarding Engine (PFE) microkernel architecture of Juniper Networks Junos OS may allow an attacker to cause a Denial of Service (DoS) condition whereby one or more Flexible PIC Concentrators (FPCs) may restart. As this is a race condition situation this issue become more likely to be hit when network instability occurs, such as but not limited to BGP/IGP reconvergences, and/or further likely to occur when more active "traffic flows" are occurring through the device. When this issue occurs, it will cause one or more FPCs to restart unexpectedly. During FPC restarts core files will be generated. While the core file is generated traffic will be disrupted. Sustained receipt of large traffic flows and reconvergence-like situations may sustain the Denial of Service (DoS) situation. This issue affects: Juniper Networks Junos OS: 18.1 version 18.1R2 and later versions prior to 18.1R3-S10 on PTX Series, QFX10K Series.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
使用共享资源的并发执行不恰当同步问题(竞争条件)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Juniper Networks Junos OS 资源管理错误漏洞
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 存在资源管理错误漏洞，该漏洞允许远程攻击者可利用该漏洞执行拒绝服务(DoS)攻击。
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

VendorProductAffected VersionsCPESubscribe
Juniper NetworksJunos OS 18.1R2 ~ 18.1* -

II. Public POCs for CVE-2021-0270

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III. Intelligence Information for CVE-2021-0270

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Same Patch Batch · Juniper Networks · 2021-04-22 · 53 CVEs total

CVE-2021-024810.0 CRITICALNFX Series: Hard-coded credentials allow an attacker to take control of any instance throu
CVE-2021-02549.8 CRITICALJunos OS: Remote code execution vulnerability in overlayd service
CVE-2021-02758.8 HIGHJunos OS: J-Web: Cross-site scripting attack allows an attacker to gain control of another
CVE-2021-02698.8 HIGHJunos OS: J-Web can be compromised through reflected client-side HTTP parameter pollution
CVE-2021-02688.8 HIGHJunos OS: J-Web has an Improper Neutralization of CRLF Sequences in its HTTP Headers which
CVE-2021-02518.6 HIGHJunos OS: MX Series with MS-PIC, MS-SPC3, MS-MIC or MS-MPC: The BRAS Subscriber Services s
CVE-2021-02668.1 HIGHcSRX: Use of Hard-coded Cryptographic Keys allows an attacker to take control of the devic
CVE-2021-02498.1 HIGHJunos OS: SRX Series: A remote attacker may be able to cause a PFE buffer overflow to arbi
CVE-2021-02658.1 HIGHContrail Insights: The REST API implementation allows an unauthenticated remote attacker t
CVE-2021-02457.8 HIGHJunos OS: Junos Fusion: Hard-coded credentials on satellite devices allows a locally authe
CVE-2021-02527.8 HIGHJunos OS: NFX Series: Local Code Execution Vulnerability in JDMD Leads to Privilege Escala
CVE-2021-02537.8 HIGHJunos OS: NFX Series: Local Command Execution Vulnerability in JDMD Leads to Privilege Esc
CVE-2021-02507.5 HIGHJunos OS and Junos OS Evolved: An attacker sending a specific crafted BGP update message w
CVE-2021-02617.5 HIGHJunos OS: Denial of Service vulnerability in J-Web and web based (HTTP/HTTPS) services cau
CVE-2021-02277.5 HIGHJunos OS: SRX Series: Denial of Service in J-Web upon receipt of crafted HTTP packets
CVE-2021-02307.5 HIGHJunos OS: SRX Series: Memory leak when querying Aggregated Ethernet (AE) interface statist
CVE-2021-02337.5 HIGHJunos OS: ACX500 Series, ACX4000 Series: Denial of Service due to FFEB crash while process
CVE-2021-02677.4 HIGHJunos OS: Receipt of a crafted DHCP packet will cause the jdhcpd DHCP service to core.
CVE-2021-02447.4 HIGHJunos OS: A race condition in the storm control profile may allow an attacker to cause a D
CVE-2021-02597.4 HIGHJunos OS and Junos OS Evolved: QFX5K Series: Underlay network traffic might not be process

Showing top 20 of 53 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Junos OS
Same vendor: Juniper Networks
Same weakness: CWE-362

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