{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2023-44193","assignerOrgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","state":"PUBLISHED","assignerShortName":"juniper","dateReserved":"2023-09-26T19:30:27.955Z","datePublished":"2023-10-12T23:04:00.332Z","dateUpdated":"2024-09-17T16:10:44.571Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","platforms":["MX Series"],"product":"Junos OS","vendor":"Juniper Networks","versions":[{"lessThan":"20.4R3-S7","status":"affected","version":"0","versionType":"semver"},{"lessThan":"21.1R3-S5","status":"affected","version":"21.1","versionType":"semver"},{"lessThan":"21.2R3-S4","status":"affected","version":"21.2","versionType":"semver"},{"lessThan":"21.3R3-S4","status":"affected","version":"21.3","versionType":"semver"},{"lessThan":"21.4R3-S3","status":"affected","version":"21.4","versionType":"semver"},{"lessThan":"22.1R3-S1","status":"affected","version":"22.1","versionType":"semver"},{"lessThan":"22.2R2-S1, 22.2R3","status":"affected","version":"22.2","versionType":"semver"},{"lessThan":"22.3R1-S2, 22.3R2","status":"affected","version":"22.3","versionType":"semver"}]}],"configurations":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"\n\n<p>For this issue to occur, following minimal configuration is required.</p><code>[ ldp interface &lt;interface1&gt; ]</code><br><code>[ interfaces &lt;interface1&gt; flexible-vlan-tagging ]</code><br><code>[ interfaces &lt;interface1&gt; encapsulation vlan-vpls ]</code><br><code>[ protocols oam ethernet connectivity-fault-management maintenance-domain &lt;md-name&gt; interface &lt;interface2&gt; ]</code><br><code>[ routing-instances &lt;md-name&gt; instance-type vpls ]</code><br><code>[ routing-instances &lt;md-name&gt; interface &lt;interface1&gt; ]</code>\n\n"}],"value":"\nFor this issue to occur, following minimal configuration is required.\n\n[ ldp interface <interface1> ]\n[ interfaces <interface1> flexible-vlan-tagging ]\n[ interfaces <interface1> encapsulation vlan-vpls ]\n[ protocols oam ethernet connectivity-fault-management maintenance-domain <md-name> interface <interface2> ]\n[ routing-instances <md-name> instance-type vpls ]\n[ routing-instances <md-name> interface <interface1> ]\n\n"}],"datePublic":"2023-10-11T16:00:00.000Z","descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"\n\n<p>An Improper Release of Memory Before Removing Last Reference vulnerability in Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows a local, low privileged attacker to cause an FPC crash, leading to Denial of Service (DoS).</p><p>On all Junos MX Series with MPC1 - MPC9, LC480, LC2101, MX10003, and MX80, when Connectivity-Fault-Management (CFM) is enabled in a VPLS scenario, and a specific LDP related command is run, an FPC will crash and reboot. Continued execution of this specific LDP command can lead to sustained Denial of Service condition.</p><p>This issue affects:</p><p>Juniper Networks Junos OS on MX Series:</p><p></p><ul><li>All versions prior to 20.4R3-S7;</li><li>21.1 versions prior to 21.1R3-S5;</li><li>21.2 versions prior to 21.2R3-S4;</li><li>21.3 versions prior to 21.3R3-S4;</li><li>21.4 versions prior to 21.4R3-S3;</li><li>22.1 versions prior to 22.1R3-S1;</li><li>22.2 versions prior to 22.2R2-S1, 22.2R3;</li><li>22.3 versions prior to 22.3R1-S2, 22.3R2.</li></ul><p></p>\n\n"}],"value":"\nAn Improper Release of Memory Before Removing Last Reference vulnerability in Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows a local, low privileged attacker to cause an FPC crash, leading to Denial of Service (DoS).\n\nOn all Junos MX Series with MPC1 - MPC9, LC480, LC2101, MX10003, and MX80, when Connectivity-Fault-Management (CFM) is enabled in a VPLS scenario, and a specific LDP related command is run, an FPC will crash and reboot. Continued execution of this specific LDP command can lead to sustained Denial of Service condition.\n\nThis issue affects:\n\nJuniper Networks Junos OS on MX Series:\n\n\n\n  *  All versions prior to 20.4R3-S7;\n  *  21.1 versions prior to 21.1R3-S5;\n  *  21.2 versions prior to 21.2R3-S4;\n  *  21.3 versions prior to 21.3R3-S4;\n  *  21.4 versions prior to 21.4R3-S3;\n  *  22.1 versions prior to 22.1R3-S1;\n  *  22.2 versions prior to 22.2R2-S1, 22.2R3;\n  *  22.3 versions prior to 22.3R1-S2, 22.3R2.\n\n\n\n\n\n\n"}],"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"}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":5.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/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-401","description":"CWE-401 Improper Release of Memory Before Removing Last Reference","lang":"en","type":"CWE"}]},{"descriptions":[{"description":"Denial of Service (DoS)","lang":"en"}]}],"providerMetadata":{"orgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","shortName":"juniper","dateUpdated":"2023-10-12T23:04:00.332Z"},"references":[{"tags":["vendor-advisory"],"url":"https://supportportal.juniper.net/JSA73157"}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>The following software releases have been updated to resolve this specific issue: Junos OS 20.4R3-S7, 21.1R3-S5, 21.2R3-S4, 21.3R3-S4, 21.4R3-S3, 22.1R3-S1, 22.2R2-S1, 22.2R3, 22.3R1-S2, 22.3R2, 22.4R1, and all subsequent releases.</p>"}],"value":"The following software releases have been updated to resolve this specific issue: Junos OS 20.4R3-S7, 21.1R3-S5, 21.2R3-S4, 21.3R3-S4, 21.4R3-S3, 22.1R3-S1, 22.2R2-S1, 22.2R3, 22.3R1-S2, 22.3R2, 22.4R1, and all subsequent releases.\n\n"}],"source":{"advisory":"JSA73157","defect":["1668419"],"discovery":"USER"},"timeline":[{"lang":"en","time":"2023-10-11T16:00:00.000Z","value":"Initial Publication"}],"title":"Junos OS: MX Series: An FPC crash is observed when CFM is enabled in a VPLS scenario and a specific LDP related command is run","workarounds":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>This issue can be avoided by disabling CFM MIP functionality.</p> <tt>[ protocols oam ethernet connectivity-fault-management maintenance-domain mip-half-function none ]</tt>"}],"value":"This issue can be avoided by disabling CFM MIP functionality.\n\n [ protocols oam ethernet connectivity-fault-management maintenance-domain mip-half-function none ]"}],"x_generator":{"engine":"Vulnogram 0.1.0-av217"}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-02T19:59:51.669Z"},"title":"CVE Program Container","references":[{"tags":["vendor-advisory","x_transferred"],"url":"https://supportportal.juniper.net/JSA73157"}]},{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-09-17T15:53:55.982862Z","id":"CVE-2023-44193","options":[{"Exploitation":"none"},{"Automatable":"no"},{"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":"2024-09-17T16:10:44.571Z"}}]}}