3.3

CVE-2021-31363

Junos OS and Junos OS Evolved: Receipt of a specific LDP message will cause a Denial of Service

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Juniper ≫ Junos Version 19.2 Update r2
Juniper ≫ Junos Version 19.2 Update r2-s1
Juniper ≫ Junos Version 19.2 Update r3
Juniper ≫ Junos Version 19.2 Update r3-s1
Juniper ≫ Junos Version 19.2 Update r3-s2
Juniper ≫ Junos Version 19.3 Update -
Juniper ≫ Junos Version 19.3 Update r1
Juniper ≫ Junos Version 19.3 Update r1-s1
Juniper ≫ Junos Version 19.3 Update r2
Juniper ≫ Junos Version 19.3 Update r2-s1
Juniper ≫ Junos Version 19.3 Update r2-s2
Juniper ≫ Junos Version 19.3 Update r2-s3
Juniper ≫ Junos Version 19.3 Update r2-s4
Juniper ≫ Junos Version 19.3 Update r2-s5
Juniper ≫ Junos Version 19.3 Update r3-s2
Juniper ≫ Junos Version 19.4 Update r1
Juniper ≫ Junos Version 19.4 Update r1-s1
Juniper ≫ Junos Version 19.4 Update r1-s2
Juniper ≫ Junos Version 19.4 Update r1-s3
Juniper ≫ Junos Version 19.4 Update r2-s4
Juniper ≫ Junos Version 19.4 Update r3-s2
Juniper ≫ Junos Version 20.1 Update r1
Juniper ≫ Junos Version 20.1 Update r1-s1
Juniper ≫ Junos Version 20.1 Update r1-s2
Juniper ≫ Junos Version 20.1 Update r1-s3
Juniper ≫ Junos Version 20.1 Update r1-s4
Juniper ≫ Junos Version 20.1 Update r2
Juniper ≫ Junos Version 20.1 Update r3
Juniper ≫ Junos Version 20.2 Update r1
Juniper ≫ Junos Version 20.2 Update r1-s1
Juniper ≫ Junos Version 20.2 Update r1-s2
Juniper ≫ Junos Version 20.2 Update r1-s3
Juniper ≫ Junos Version 20.2 Update r2
Juniper ≫ Junos Version 20.2 Update r3
Juniper ≫ Junos Version 20.3 Update r1
Juniper ≫ Junos Version 20.3 Update r1-s1
Juniper ≫ Junos Version 20.3 Update r2
Juniper ≫ Junos Os Evolved Version 20.1 Update r1
Juniper ≫ Junos Os Evolved Version 20.1 Update r1-s1
Juniper ≫ Junos Os Evolved Version 20.1 Update r2
Juniper ≫ Junos Os Evolved Version 20.1 Update r2-s1
Juniper ≫ Junos Os Evolved Version 20.1 Update r2-s2
Juniper ≫ Junos Os Evolved Version 20.2 Update r1
Juniper ≫ Junos Os Evolved Version 20.2 Update r1-s1
Juniper ≫ Junos Os Evolved Version 20.2 Update r2
Juniper ≫ Junos Os Evolved Version 20.3 Update r1
Juniper ≫ Junos Os Evolved Version 20.3 Update r1-s1
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.4% 0.335
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 3.3 6.5 2.9
AV:A/AC:L/Au:N/C:N/I:N/A:P
Juniper 6.5 2.8 3.6
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')

The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.

https://kb.juniper.net/JSA11225
Patch
Vendor Advisory