CVE-2021-31363

Katalog CVE

CVSS 6.5 · Medium EPSS 0,40%

Kerentanan Loop with Unreachable Exit Condition ('Infinite Loop') pada juniper junos, juniper junos os evolved. Skor CVSS 3.1 6.5 (Medium) menurut juniper.net.

Deskripsi (NVD)

In an MPLS P2MP environment a Loop with Unreachable Exit Condition vulnerability in the routing protocol daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker to cause high load on RPD which in turn may lead to routing protocol flaps. If a system with sensor-based-stats enabled receives a specific LDP FEC this can lead to the above condition. Continued receipted of such an LDP FEC will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS 19.2 version 19.2R2 and later versions prior to 19.2R3-S3; 19.3 versions prior to 19.3R2-S6, 19.3R3-S2; 19.4 versions prior to 19.4R1-S4, 19.4R2-S4, 19.4R3-S2; 20.1 versions prior to 20.1R2-S1, 20.1R3; 20.2 versions prior to 20.2R2-S1, 20.2R3; 20.3 versions prior to 20.3R1-S2, 20.3R2. This issue does not affect Juniper Networks Junos OS versions prior to 19.2R2. Juniper Networks Junos OS Evolved All versions prior to 20.1R2-S3-EVO; 20.3 versions prior to 20.3R1-S2-EVO.

Rincian

Terbit di NVD

19 Oktober 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

6.5 (Medium), sumber juniper.net
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')

EPSS (30 hari)

0,40% peluang dieksploitasi; lebih tinggi dari 32,8% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://kb.juniper.net/JSA11225 patch · advisory vendor