{"id":"CVE-2023-44184","state":"PUBLISHED","title":"Junos OS and Junos OS Evolved: High CPU load due to specific NETCONF command","description":"\nAn Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in the management daemon (mgd) process of Juniper Networks Junos OS and Junos OS Evolved allows a network-based authenticated low-privileged attacker, by executing a specific command via NETCONF, to cause a CPU Denial of Service to the device's control plane.\n\nThis issue affects:\n\nJuniper Networks Junos OS\n\n\n\n  *  All versions prior to 20.4R3-S7;\n  *  21.2 versions prior to 21.2R3-S5;\n  *  21.3 versions prior to 21.3R3-S5;\n  *  21.4 versions prior to 21.4R3-S4;\n  *  22.1 versions prior to 22.1R3-S2;\n  *  22.2 versions prior to 22.2R3;\n  *  22.3 versions prior to 22.3R2-S1, 22.3R3;\n  *  22.4 versions prior to 22.4R1-S2, 22.4R2.\n\n\n\n\nJuniper Networks Junos OS Evolved\n\n\n\n  *  All versions prior to 21.4R3-S4-EVO;\n  *  22.1 versions prior to 22.1R3-S2-EVO;\n  *  22.2 versions prior to 22.2R3-EVO;\n  *  22.3 versions prior to 22.3R3-EVO;\n  *  22.4 versions prior to 22.4R2-EVO.\n\n\n\n\nAn indicator of compromise can be seen by first determining if the NETCONF client is logged in and fails to log out after a reasonable period of time and secondly reviewing the WCPU percentage for the mgd process by running the following command:\n\nmgd process example:\n\nuser@device-re#> show system processes extensive | match \"mgd|PID\" | except last\nPID USERNAME PRI NICE SIZE RES STATE C TIME WCPU COMMAND\n92476 root 100 0 500M 89024K CPU3 3 57.5H 89.60% mgd <<<<<<<<<<< review the high cpu percentage.\nExample to check for NETCONF activity:\n\nWhile there is no specific command that shows a specific session in use for NETCONF, you can review logs for UI_LOG_EVENT with \"client-mode 'netconf'\"\n\nFor example:\n\nmgd[38121]: UI_LOGIN_EVENT: User 'root' login, class 'super-user' [38121], ssh-connection '10.1.1.1 201 55480 10.1.1.2 22', client-mode 'netconf'\n\n","publishedAt":"2023-10-12T23:02:34.571Z","updatedAt":"2024-09-17T16:11:00.874Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"juniper"},"assigner":"juniper","products":["Juniper Networks Junos OS","Juniper Networks Junos OS Evolved"],"affected":[{"vendor":"Juniper Networks","product":"Junos OS","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"20.4R3-S7","versionType":"semver"},{"version":"21.1","status":"affected","lessThan":"21.1R1","versionType":"semver"},{"version":"21.2","status":"affected","lessThan":"21.2R3-S5","versionType":"semver"},{"version":"21.3","status":"affected","lessThan":"21.3R3-S5","versionType":"semver"},{"version":"21.4","status":"affected","lessThan":"21.4R3-S4","versionType":"semver"},{"version":"22.1","status":"affected","lessThan":"22.1R3-S2","versionType":"semver"},{"version":"22.2","status":"affected","lessThan":"22.2R3","versionType":"semver"},{"version":"22.3","status":"affected","lessThan":"22.3R2-S1, 22.3R3","versionType":"semver"},{"version":"22.4","status":"affected","lessThan":"22.4R1-S2, 22.4R2","versionType":"semver"}]},{"vendor":"Juniper Networks","product":"Junos OS Evolved","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"21.4R3-S4-EVO","versionType":"semver"},{"version":"22.1","status":"affected","lessThan":"22.1R3-S2-EVO","versionType":"semver"},{"version":"22.2","status":"affected","lessThan":"22.2R3-EVO","versionType":"semver"},{"version":"22.3","status":"affected","lessThan":"22.3R3-EVO","versionType":"semver"},{"version":"22.4","status":"affected","lessThan":"22.4R2-EVO","versionType":"semver"}]}],"references":["https://supportportal.juniper.net/JSA73147"],"weaknesses":["CWE-119"],"ingestedAt":"2026-10-29T20:06:17.512Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/44xxx/CVE-2023-44184.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2023-44184","state":"PUBLISHED","datePublished":"2023-10-12T23:02:34.571Z","dateUpdated":"2024-09-17T16:11:00.874Z","assignerShortName":"juniper","assignerOrgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","dateReserved":"2023-09-26T19:30:17.664Z"},"containers":{"cna":{"title":"Junos OS and Junos OS Evolved: High CPU load due to specific NETCONF command","descriptions":[{"lang":"en","value":"\nAn Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in the management daemon (mgd) process of Juniper Networks Junos OS and Junos OS Evolved allows a network-based authenticated low-privileged attacker, by executing a specific command via NETCONF, to cause a CPU Denial of Service to the device's control plane.\n\nThis issue affects:\n\nJuniper Networks Junos OS\n\n\n\n  *  All versions prior to 20.4R3-S7;\n  *  21.2 versions prior to 21.2R3-S5;\n  *  21.3 versions prior to 21.3R3-S5;\n  *  21.4 versions prior to 21.4R3-S4;\n  *  22.1 versions prior to 22.1R3-S2;\n  *  22.2 versions prior to 22.2R3;\n  *  22.3 versions prior to 22.3R2-S1, 22.3R3;\n  *  22.4 versions prior to 22.4R1-S2, 22.4R2.\n\n\n\n\nJuniper Networks Junos OS Evolved\n\n\n\n  *  All versions prior to 21.4R3-S4-EVO;\n  *  22.1 versions prior to 22.1R3-S2-EVO;\n  *  22.2 versions prior to 22.2R3-EVO;\n  *  22.3 versions prior to 22.3R3-EVO;\n  *  22.4 versions prior to 22.4R2-EVO.\n\n\n\n\nAn indicator of compromise can be seen by first determining if the NETCONF client is logged in and fails to log out after a reasonable period of time and secondly reviewing the WCPU percentage for the mgd process by running the following command:\n\nmgd process example:\n\nuser@device-re#> show system processes extensive | match \"mgd|PID\" | except last\nPID USERNAME PRI NICE SIZE RES STATE C TIME WCPU COMMAND\n92476 root 100 0 500M 89024K CPU3 3 57.5H 89.60% mgd <<<<<<<<<<< review the high cpu percentage.\nExample to check for NETCONF activity:\n\nWhile there is no specific command that shows a specific session in use for NETCONF, you can review logs for UI_LOG_EVENT with \"client-mode 'netconf'\"\n\nFor example:\n\nmgd[38121]: UI_LOGIN_EVENT: User 'root' login, class 'super-user' [38121], ssh-connection '10.1.1.1 201 55480 10.1.1.2 22', client-mode 'netconf'\n\n"}],"affected":[{"vendor":"Juniper Networks","product":"Junos OS","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"20.4R3-S7","versionType":"semver"},{"version":"21.1","status":"affected","lessThan":"21.1R1","versionType":"semver"},{"version":"21.2","status":"affected","lessThan":"21.2R3-S5","versionType":"semver"},{"version":"21.3","status":"affected","lessThan":"21.3R3-S5","versionType":"semver"},{"version":"21.4","status":"affected","lessThan":"21.4R3-S4","versionType":"semver"},{"version":"22.1","status":"affected","lessThan":"22.1R3-S2","versionType":"semver"},{"version":"22.2","status":"affected","lessThan":"22.2R3","versionType":"semver"},{"version":"22.3","status":"affected","lessThan":"22.3R2-S1, 22.3R3","versionType":"semver"},{"version":"22.4","status":"affected","lessThan":"22.4R1-S2, 22.4R2","versionType":"semver"}]},{"vendor":"Juniper Networks","product":"Junos OS Evolved","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"21.4R3-S4-EVO","versionType":"semver"},{"version":"22.1","status":"affected","lessThan":"22.1R3-S2-EVO","versionType":"semver"},{"version":"22.2","status":"affected","lessThan":"22.2R3-EVO","versionType":"semver"},{"version":"22.3","status":"affected","lessThan":"22.3R3-EVO","versionType":"semver"},{"version":"22.4","status":"affected","lessThan":"22.4R2-EVO","versionType":"semver"}]}],"references":[{"url":"https://supportportal.juniper.net/JSA73147","tags":["vendor-advisory"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-119","description":"CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"juniper","orgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","dateUpdated":"2023-10-13T18:18:27.354Z"},"configurations":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>The following minimal configuration must be present: </p><p> [system services netconf]</p>"}],"value":"The following minimal configuration must be present: \n\n [system services netconf]\n\n"}],"datePublic":"2023-10-11T16:00:00.000Z","exploits":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>Juniper SIRT is not aware of any malicious exploitation of this vulnerability.</p>"}],"value":"Juniper SIRT is not aware of any malicious exploitation of this vulnerability.\n\n"}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>The following software releases have been updated to resolve this specific issue: </p><p>Junos OS: 20.4R3-S7, 21.2R3-S5, 21.3R3-S5, 21.4R3-S4, 22.1R3-S2, 22.2R3, 22.3R2-S1, 22.3R3, 22.4R1-S2, 22.4R2, 23.2R1, and all subsequent releases.</p><p>Junos OS Evolved 21.4R3-S4-EVO, 22.1R3-S2-EVO, 22.2R3-EVO, 22.3R3-EVO, 22.4R2-EVO, 23.2R1-EVO, and all subsequent releases.</p>"}],"value":"The following software releases have been updated to resolve this specific issue: \n\nJunos OS: 20.4R3-S7, 21.2R3-S5, 21.3R3-S5, 21.4R3-S4, 22.1R3-S2, 22.2R3, 22.3R2-S1, 22.3R3, 22.4R1-S2, 22.4R2, 23.2R1, and all subsequent releases.\n\nJunos OS Evolved 21.4R3-S4-EVO, 22.1R3-S2-EVO, 22.2R3-EVO, 22.3R3-EVO, 22.4R2-EVO, 23.2R1-EVO, and all subsequent releases.\n\n"}],"source":{"advisory":"JSA73147","defect":["1706285"],"discovery":"USER"},"timeline":[{"lang":"en","time":"2023-10-11T16:00:00.000Z","value":"Initial Publication"}],"workarounds":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>There are no known workarounds for this issue.</p><p>The impact of this issue may be temporarily cleared by periodically restarting the management daemon.</p>"}],"value":"There are no known workarounds for this issue.\n\nThe impact of this issue may be temporarily cleared by periodically restarting the management daemon.\n\n"},{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>To reduce the risk of exploitation enable access control lists (ACLs) and other filtering mechanisms to limit access to the device only from trusted hosts and networks to the NETCONF service.</p>"}],"value":"To reduce the risk of exploitation enable access control lists (ACLs) and other filtering mechanisms to limit access to the device only from trusted hosts and networks to the NETCONF service.\n\n"}],"x_generator":{"engine":"Vulnogram 0.1.0-av217"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://supportportal.juniper.net/JSA73147","tags":["vendor-advisory","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T19:59:51.183Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-09-17T15:54:08.524515Z","id":"CVE-2023-44184","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-09-17T16:11:00.874Z"}}]}}}