7.1

CVE-2025-52961

Medienbericht
An Uncontrolled Resource Consumption vulnerability in the Connectivity Fault Management (CFM) daemon and the Connectivity Fault Management Manager (cfmman) of Juniper Networks Junos OS Evolved on PTX10001-36MR, PTX10002-36QDD, PTX10004, PTX10008, PTX10016  allows an unauthenticated, adjacent attacker to cause a Denial-of-Service (DoS).

An attacker on an adjacent device sending specific valid traffic can cause cfmd to spike the CPU to 100% and cfmman's memory to leak, eventually to cause the FPC crash and restart.

Continued receipt and processes of these specific valid packets will sustain the Denial of Service (DoS) condition.

An indicator of compromise is to watch for an increase in cfmman memory rising over time by issuing the following command and evaluating the RSS number. If the RSS is growing into GBs then consider restarting the device to temporarily clear memory.
 
  user@device> show system processes node fpc<num> detail | match cfmman

Example: 

  show system processes node fpc0 detail | match cfmman 
  F S UID        PID       PPID  PGID   SID   C PRI  NI  ADDR SZ    WCHAN    RSS     PSR STIME TTY          TIME     CMD
  4 S root      15204     1    15204  15204  0  80  0   - 90802     -      113652   4  Sep25 ?           00:15:28 /usr/bin/cfmman -p /var/pfe -o -c /usr/conf/cfmman-cfg-active.xml
This issue affects Junos OS Evolved on PTX10001-36MR, PTX10002-36QDD, PTX10004, PTX10008, PTX10016:

  *  from 23.2R1-EVO before 23.2R2-S4-EVO, 
  *  from 23.4 before 23.4R2-S4-EVO, 
  *  from 24.2 before 24.2R2-EVO, 
  *  from 24.4 before 24.4R1-S2-EVO, 24.4R2-EVO.


This issue does not affect Junos OS Evolved on PTX10001-36MR, PTX10002-36QDD, PTX10004, PTX10008, PTX10016  before 23.2R1-EVO.
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HerstellerJuniper Networks
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Produkt Junos OS Evolved
Default Statusunaffected
Version < 23.2R2-S4-EVO
Version 23.2R1-EVO
Status affected
Version < 23.4R2-S4-EVO
Version 23.4-EVO
Status affected
Version < 24.2R2-EVO
Version 24.2-EVO
Status affected
Version < 24.4R1-S2-EVO, 24.4R2-EVO
Version 24.4-EVO
Status affected
Version < 23.2R1-EVO
Version 0
Status unaffected
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.02% 0.028
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
sirt@juniper.net 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
sirt@juniper.net 7.1 0 0
CVSS:4.0/AV:A/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:Y/R:A/V:C/RE:M/U:Green
CWE-400 Uncontrolled Resource Consumption

The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.