csirt@kutim:~/threat-intel/cve/CVE-2021-0270

Katalog CVE

CVSS 5.9 · Medium EPSS 0,72%

Kerentanan Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') pada juniper junos. Skor CVSS 3.1 5.9 (Medium) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD
22 April 2021
Terakhir diubah
17 Juni 2026
Status NVD
Modified
CVSS 3.1
5.9 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator
Jenis kelemahan (CWE)
CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CWE-416: Use After Free
EPSS (30 hari)
0,72% peluang dieksploitasi; lebih tinggi dari 52,7% CVE lain

Produk dan versi terdampak

VendorProdukVersi terdampak
juniper junos Versi 18.1 r2
juniper junos Versi 18.1 r2-s1
juniper junos Versi 18.1 r2-s2
juniper junos Versi 18.1 r2-s4
juniper junos Versi 18.1 r3
juniper junos Versi 18.1 r3-s1
juniper junos Versi 18.1 r3-s2
juniper junos Versi 18.1 r3-s3
juniper junos Versi 18.1 r3-s4
juniper junos Versi 18.1 r3-s5
juniper junos Versi 18.1 r3-s6
juniper junos Versi 18.1 r3-s7
juniper junos Versi 18.1 r3-s8
juniper junos Versi 18.1 r3-s9

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:10 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.