fkie_cve-2025-52961
Vulnerability from fkie_nvd
Published
2025-10-09 16:15
Modified
2025-10-14 19:37
Severity ?
Summary
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.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "An Uncontrolled Resource Consumption vulnerability in the Connectivity Fault Management (CFM) daemon\u00a0and the Connectivity Fault Management Manager (cfmman)\u00a0of 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).\n\nAn attacker on an adjacent device sending specific valid traffic can cause cfmd to spike the CPU to 100% and cfmman\u0027s memory to leak, eventually to cause the FPC crash and restart.\n\nContinued receipt and processes of these specific valid packets will sustain the Denial of Service (DoS) condition.\n\nAn indicator of compromise is to watch\u00a0for an increase in cfmman memory rising over time by issuing the following command and evaluating the\u00a0RSS\u00a0number.\u00a0If the RSS is growing into GBs then consider restarting the device to temporarily clear memory.\n \n\u00a0 user@device\u003e show system processes node fpc\u003cnum\u003e detail | match cfmman\n\nExample:\u00a0\n\n\u00a0 show system processes node fpc0 detail | match cfmman\u00a0\n\u00a0 F S UID \u00a0 \u00a0 \u00a0 PID\u00a0 \u00a0 \u00a0 \u00a0PPID PGID \u00a0 SID\u00a0 \u00a0C PRI NI\u00a0 ADDR SZ\u00a0 \u00a0 WCHAN \u00a0 RSS\u00a0 \u00a0 \u00a0PSR STIME TTY \u00a0 \u00a0 \u00a0 \u00a0 TIME\u00a0 \u00a0 \u00a0CMD\n\u00a0 4 S root\u00a0 \u00a0 \u00a0 15204 \u00a0 \u00a0 1\u00a0 \u00a0 15204\u00a0 15204 0 80\u00a0 0\u00a0 \u00a0- 90802\u00a0 \u00a0 \u00a0-\u00a0 \u00a0 \u00a0 113652\u00a0 \u00a04\u00a0 Sep25 ?\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a000:15:28 /usr/bin/cfmman -p /var/pfe -o -c /usr/conf/cfmman-cfg-active.xml\nThis issue affects Junos OS Evolved on\u00a0PTX10001-36MR, PTX10002-36QDD, PTX10004, PTX10008, PTX10016:\n\n * from 23.2R1-EVO before 23.2R2-S4-EVO, \n * from 23.4 before 23.4R2-S4-EVO, \n * from 24.2 before 24.2R2-EVO, \n * from 24.4 before 24.4R1-S2-EVO, 24.4R2-EVO.\n\n\nThis issue does not affect Junos OS Evolved on\u00a0PTX10001-36MR, PTX10002-36QDD, PTX10004, PTX10008, PTX10016 before 23.2R1-EVO."
}
],
"id": "CVE-2025-52961",
"lastModified": "2025-10-14T19:37:28.107",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 3.6,
"source": "sirt@juniper.net",
"type": "Primary"
}
],
"cvssMetricV40": [
{
"cvssData": {
"Automatable": "YES",
"Recovery": "AUTOMATIC",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "ADJACENT",
"availabilityRequirement": "NOT_DEFINED",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"confidentialityRequirement": "NOT_DEFINED",
"exploitMaturity": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "GREEN",
"subAvailabilityImpact": "LOW",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "CONCENTRATED",
"vectorString": "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",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "MODERATE"
},
"source": "sirt@juniper.net",
"type": "Secondary"
}
]
},
"published": "2025-10-09T16:15:45.247",
"references": [
{
"source": "sirt@juniper.net",
"url": "https://supportportal.juniper.net/JSA103144"
},
{
"source": "sirt@juniper.net",
"url": "https://www.juniper.net/documentation/us/en/software/junos/network-mgmt/topics/topic-map/cfm-configuring.html"
}
],
"sourceIdentifier": "sirt@juniper.net",
"vulnStatus": "Awaiting Analysis",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-400"
}
],
"source": "sirt@juniper.net",
"type": "Primary"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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