{ "dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": { "cveId": "CVE-2025-21601", "assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "state": "PUBLISHED", "assignerShortName": "juniper", "dateReserved": "2024-12-26T14:47:11.670Z", "datePublished": "2025-04-09T19:51:36.325Z", "dateUpdated": "2025-04-15T20:30:05.134Z" }, "containers": { "cna": { "affected": [ { "defaultStatus": "unaffected", "modules": [ "J-Web", "Captive Portal", "802.1X", "Juniper Secure Connect (JSC)", "Firewall Authentication" ], "packageName": "AppWeb", "platforms": [ "SRX Series", "EX Series", "MX240", "MX480", "MX960", "QFX5120 Series" ], "product": "Junos OS", "programRoutines": [ { "name": "Mbedthis AppWeb" } ], "repo": "https://www.embedthis.com/appweb", "vendor": "Juniper Networks", "versions": [ { "lessThan": "21.4R3-S9", "status": "affected", "version": "0", "versionType": "semver" }, { "lessThan": "22.2R3-S5", "status": "affected", "version": "22.2", "versionType": "semver" }, { "lessThan": "22.4R3-S4", "status": "affected", "version": "22.4", "versionType": "semver" }, { "lessThan": "23.2R2-S3", "status": "affected", "version": "23.2", "versionType": "semver" }, { "lessThan": "23.4R2-S3", "status": "affected", "version": "23.4", "versionType": "semver" }, { "lessThan": "24.2R1-S1, 24.2R2", "status": "affected", "version": "24.2", "versionType": "semver" } ] } ], "configurations": [ { "lang": "en", "supportingMedia": [ { "base64": false, "type": "text/html", "value": "

The following minimal configuration is necessary:

  [ system services web-management ]" } ], "value": "The following minimal configuration is necessary:\n\n  [ system services web-management ]" } ], "credits": [ { "lang": "en", "type": "reporter", "value": "Alexander Zielke with VegaSystems GmbH & Co. KG" } ], "datePublic": "2025-04-09T16:00:00.000Z", "descriptions": [ { "lang": "en", "supportingMedia": [ { "base64": false, "type": "text/html", "value": "An Improper Following of Specification by Caller vulnerability in web management (J-Web, Captive Portal, 802.1X, Juniper Secure Connect (JSC) of Juniper Networks Junos OS on SRX Series, EX Series, MX240, MX480, MX960, QFX5120 Series, allows an unauthenticated, network-based attacker, sending genuine traffic targeted to the device to cause the CPU to climb until the device becomes unresponsive.

Continuous receipt of these packets will create a sustained Denial of Service (DoS) condition.

This issue affects Junos OS: 

An indicator of compromise is to review the CPU % of the httpd process in the CLI:
e.g.
  show system processes extensive | match httpd

  PID nobody       52   0   20M    191M select   2   0:01   80.00% httpd{httpd} <<<<< the percentage of httpd usage if high may be an indicator

" } ], "value": "An Improper Following of Specification by Caller vulnerability in web management (J-Web, Captive Portal, 802.1X, Juniper Secure Connect (JSC) of Juniper Networks Junos OS on SRX Series, EX Series, MX240, MX480, MX960, QFX5120 Series, allows an unauthenticated, network-based attacker, sending genuine traffic targeted to the device to cause the CPU to climb until the device becomes unresponsive. \n\nContinuous receipt of these packets will create a sustained Denial of Service (DoS) condition.\n\n\n\n\nThis issue affects Junos OS: \n\n\n\n * All versions before 21.4R3-S9,\n * from 22.2 before 22.2R3-S5,\n * from 22.4 before 22.4R3-S4,\n * from 23.2 before 23.2R2-S3,\n * from 23.4 before 23.4R2-S3,\n * from 24.2 before 24.2R1-S1, 24.2R2.\n\n\nAn indicator of compromise is to review the CPU % of the httpd process in the CLI:\ne.g.\n  show system processes extensive | match httpd  PID nobody       52   0   20M    191M select   2   0:01   80.00% httpd{httpd} <<<<< the percentage of httpd usage if high may be an indicator" } ], "exploits": [ { "lang": "en", "supportingMedia": [ { "base64": false, "type": "text/html", "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability." } ], "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability." } ], "metrics": [ { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1" }, "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ] }, { "cvssV4_0": { "Automatable": "YES", "Recovery": "AUTOMATIC", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "baseScore": 8.7, "baseSeverity": "HIGH", "privilegesRequired": "NONE", "providerUrgency": "AMBER", "subAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "CONCENTRATED", "vectorString": "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/AU:Y/R:A/V:C/RE:M/U:Amber", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "MODERATE" }, "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ] } ], "problemTypes": [ { "descriptions": [ { "description": "573 - Improper Following of Specification by Caller", "lang": "en" } ] } ], "providerMetadata": { "orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "shortName": "juniper", "dateUpdated": "2025-04-09T19:51:36.325Z" }, "references": [ { "tags": [ "vendor-advisory" ], "url": "https://supportportal.juniper.net/JSA96452" } ], "solutions": [ { "lang": "en", "supportingMedia": [ { "base64": false, "type": "text/html", "value": "The following software releases have been updated to resolve this specific issue: Junos OS: 21.4R3-S9, 22.2R3-S5, 22.4R3-S4, 23.2R2-S3, 23.4R2-S3, 24.2R1-S1, 24.2R2, 24.4R1, and all subsequent releases." } ], "value": "The following software releases have been updated to resolve this specific issue: Junos OS: 21.4R3-S9, 22.2R3-S5, 22.4R3-S4, 23.2R2-S3, 23.4R2-S3, 24.2R1-S1, 24.2R2, 24.4R1, and all subsequent releases." } ], "source": { "advisory": "JSA96452", "defect": [ "1827265" ], "discovery": "USER" }, "timeline": [ { "lang": "en", "time": "2025-04-09T16:00:00.000Z", "value": "Initial Publication" } ], "title": "Junos OS: SRX and EX Series, MX240, MX480, MX960, QFX5120 Series: When web management is enabled for specific services an attacker may cause a CPU spike by sending genuine packets to the device", "workarounds": [ { "lang": "en", "supportingMedia": [ { "base64": false, "type": "text/html", "value": "There are no known workarounds for this issue.

To reduce the risk of exploitation use authentication when using web management services.
" } ], "value": "There are no known workarounds for this issue.\n\nTo reduce the risk of exploitation use authentication when using web management services." } ], "x_generator": { "engine": "Vulnogram 0.1.0-dev" } }, "adp": [ { "problemTypes": [ { "descriptions": [ { "type": "CWE", "cweId": "CWE-573", "lang": "en", "description": "CWE-573 Improper Following of Specification by Caller" } ] } ], "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2025-04-10T13:11:29.847130Z", "id": "CVE-2025-21601", "options": [ { "Exploitation": "none" }, { "Automatable": "yes" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-04-15T20:30:05.134Z" } } ] } }