CVE-2021-0270

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Summary

CVECVE-2021-0270
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-04-22 20:15:00 UTC
Updated2021-04-28 18:09:00 UTC
DescriptionOn 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.

Risk And Classification

Problem Types: CWE-362 | CWE-416

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Juniper Junos 18.1 r2 All All
Operating System Juniper Junos 18.1 r2-s1 All All
Operating System Juniper Junos 18.1 r2-s2 All All
Operating System Juniper Junos 18.1 r2-s4 All All
Operating System Juniper Junos 18.1 r3 All All
Operating System Juniper Junos 18.1 r3-s1 All All
Operating System Juniper Junos 18.1 r3-s2 All All
Operating System Juniper Junos 18.1 r3-s3 All All
Operating System Juniper Junos 18.1 r3-s4 All All
Operating System Juniper Junos 18.1 r3-s5 All All
Operating System Juniper Junos 18.1 r3-s6 All All
Operating System Juniper Junos 18.1 r3-s7 All All
Operating System Juniper Junos 18.1 r3-s8 All All
Operating System Juniper Junos 18.1 r3-s9 All All
Hardware Juniper Ptx1000 - All All All
Hardware Juniper Ptx10001-36mr - All All All
Hardware Juniper Ptx10002 - All All All
Hardware Juniper Ptx10003 - All All All
Hardware Juniper Ptx10004 - All All All
Hardware Juniper Ptx10008 - All All All
Hardware Juniper Ptx10016 - All All All
Hardware Juniper Ptx3000 - All All All
Hardware Juniper Ptx5000 - All All All
Hardware Juniper Qfx10002 - All All All
Hardware Juniper Qfx10008 - All All All
Hardware Juniper Qfx10016 - All All All

References

ReferenceSourceLinkTags
Monitoring Network Traffic Flow Using Inline Flow Monitoring on PTX Series Routers - Technical Documentation - Support - Juniper Networks MISC www.juniper.net
2021-04 Security Bulletin: Junos OS: PTX Series, QFX10K Series: A PTX/QFX FPC may restart unexpectedly with the "inline-Jflow" feature enabled on a large-scale deployment (CVE-2021-0270) - Juniper Networks MISC kb.juniper.net
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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