8.7

CVE-2024-39542

An Improper Validation of Syntactic Correctness of Input vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on MX Series with MPC10/11 or LC9600, MX304, and Junos OS Evolved on ACX Series and PTX Series allows an unauthenticated, network based attacker to cause a Denial-of-Service (DoS).

This issue can occur in two scenarios:

1. If a device, which is configured with SFLOW and ECMP, receives specific valid transit traffic, which is subject to sampling, the packetio process crashes, which in turn leads to an evo-aftman crash and causes the FPC to stop working until it is restarted. (This scenario is only applicable to PTX but not to ACX or MX.)

2. If a device receives a malformed CFM packet on an interface configured with CFM, the packetio process crashes, which in turn leads to an evo-aftman crash and causes the FPC to stop working until it is restarted. Please note that the CVSS score is for the formally more severe issue 1.

The CVSS score for scenario 2. is: 6.5 (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)




This issue affects Junos OS:



  *  All versions before 21.2R3-S4,
  *  21.4 versions before 21.4R2,
  *  22.2 versions before 22.2R3-S2; 




Junos OS Evolved:




  *  All versions before 21.2R3-S8-EVO,
  *  21.4 versions before 21.4R2-EVO.

Verknüpft mit AI von unstrukturierten Daten zu bestehenden CPE der NVD
Diese Information steht angemeldeten Benutzern zur Verfügung.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Juniper ≫ Junos Version21.4 Update-
Juniper ≫ Junos Version21.4 Updater1
Juniper ≫ Junos Version21.4 Updater1-s1
Juniper ≫ Junos Version21.4 Updater1-s2
Juniper ≫ Junos Version22.2 Update-
Juniper ≫ Junos Version22.2 Updater1
Juniper ≫ Junos Version22.2 Updater1-s1
Juniper ≫ Junos Version22.2 Updater1-s2
Juniper ≫ Junos Version22.2 Updater2
Juniper ≫ Junos Os Evolved Version21.2 Update-
Juniper ≫ Junos Os Evolved Version21.2 Updater1
Juniper ≫ Junos Os Evolved Version21.2 Updater1-s1
Juniper ≫ Junos Os Evolved Version21.2 Updater1-s2
Juniper ≫ Junos Os Evolved Version21.2 Updater2
Juniper ≫ Junos Os Evolved Version21.2 Updater2-s1
Juniper ≫ Junos Os Evolved Version21.2 Updater2-s2
Juniper ≫ Junos Os Evolved Version21.2 Updater3
Juniper ≫ Junos Os Evolved Version21.2 Updater3-s1
Juniper ≫ Junos Os Evolved Version21.2 Updater3-s2
Juniper ≫ Junos Os Evolved Version21.2 Updater3-s3
Juniper ≫ Junos Os Evolved Version21.2 Updater3-s4
Juniper ≫ Junos Os Evolved Version21.2 Updater3-s5
Juniper ≫ Junos Os Evolved Version21.2 Updater3-s6
Juniper ≫ Junos Os Evolved Version21.2 Updater3-s7
Juniper ≫ Junos Os Evolved Version21.4 Update-
Juniper ≫ Junos Os Evolved Version21.4 Updater1
Juniper ≫ Junos Os Evolved Version21.4 Updater1-s1
Juniper ≫ Junos Os Evolved Version21.4 Updater1-s2
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.32% 0.548
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
sirt@juniper.net 8.7 0 0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
sirt@juniper.net 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-1286 Improper Validation of Syntactic Correctness of Input

The product receives input that is expected to be well-formed - i.e., to comply with a certain syntax - but it does not validate or incorrectly validates that the input complies with the syntax.