{ "CVE_data_meta": { "ASSIGNER": "sirt@juniper.net", "DATE_PUBLIC": "2021-10-13T16:00:00.000Z", "ID": "CVE-2021-31351", "STATE": "PUBLIC", "TITLE": "Junos OS: MX Series: Receipt of specific packet on MS-MPC/MS-MIC causes line card reset" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "Junos OS", "version": { "version_data": [ { "version_affected": "!<", "version_value": "15.1" }, { "version_affected": "!<", "version_name": "17.3", "version_value": "17.3R3-S11" }, { "platform": "MX Series", "version_affected": "=", "version_value": "17.3R3-S11" }, { "platform": "MX Series", "version_affected": ">=", "version_name": "17.4", "version_value": "17.4R2-S13" }, { "version_affected": "!>=", "version_name": "17.4", "version_value": "17.4R3" }, { "platform": "MX Series", "version_affected": "=", "version_value": "18.1R3-S12" }, { "platform": "MX Series", "version_affected": ">=", "version_name": "18.2", "version_value": "18.2R2-S8, 18.2R3-S7" }, { "platform": "MX Series", "version_affected": "=", "version_value": "18.3R3-S4" }, { "platform": "MX Series", "version_affected": ">=", "version_name": "18.4", "version_value": "18.4R1-S8, 18.4R2-S7" }, { "platform": "MX Series", "version_affected": "=", "version_name": "18.4", "version_value": "18.4R3-S7" }, { "platform": "MX Series", "version_affected": "=", "version_name": "19.1", "version_value": "19.1R3-S4, 19.1R3-S5" }, { "platform": "MX Series", "version_affected": "=", "version_name": "19.2", "version_value": "19.2R1-S6" }, { "platform": "MX Series", "version_affected": "=", "version_name": "19.3", "version_value": "19.3R3-S2" }, { "platform": "MX Series", "version_affected": ">=", "version_name": "19.4", "version_value": "19.4R2-S4" }, { "platform": "MX Series", "version_affected": "=", "version_name": "19.4", "version_value": "19.4R3-S2" }, { "platform": "MX Series", "version_affected": "=", "version_name": "20.1", "version_value": "20.1R2-S1" }, { "platform": "MX Series", "version_affected": ">=", "version_name": "20.2", "version_value": "20.2R2-S2" }, { "platform": "MX Series", "version_affected": "=", "version_name": "20.2", "version_value": "20.2R3" }, { "platform": "MX Series", "version_affected": ">=", "version_name": "20.3", "version_value": "20.3R1-S2" }, { "platform": "MX Series", "version_affected": "=", "version_name": "20.3", "version_value": "20.3R2" }, { "platform": "MX Series", "version_affected": "<", "version_name": "20.4", "version_value": "20.4R2-S1, 20.4R3" }, { "platform": "MX Series", "version_affected": "<", "version_name": "21.1", "version_value": "21.1R1-S1, 21.1R2" } ] } } ] }, "vendor_name": "Juniper Networks" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "An Improper Check for Unusual or Exceptional Conditions in packet processing on the MS-MPC/MS-MIC utilized by Juniper Networks Junos OS allows a malicious attacker to send a specific packet, triggering the MS-MPC/MS-MIC to reset, causing a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue only affects specific versions of Juniper Networks Junos OS on MX Series: 17.3R3-S11; 17.4R2-S13; 17.4R3 prior to 17.4R3-S5; 18.1R3-S12; 18.2R2-S8, 18.2R3-S7, 18.2R3-S8; 18.3R3-S4; 18.4R3-S7; 19.1R3-S4, 19.1R3-S5; 19.2R1-S6; 19.3R3-S2; 19.4R2-S4, 19.4R2-S5; 19.4R3-S2; 20.1R2-S1; 20.2R2-S2, 20.2R2-S3, 20.2R3; 20.3R2, 20.3R2-S1; 20.4R1, 20.4R1-S1, 20.4R2; 21.1R1; This issue does not affect any version of Juniper Networks Junos OS prior to 15.1X49-D240;" } ] }, "exploit": [ { "lang": "eng", "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability." } ], "generator": { "engine": "Vulnogram 0.0.9" }, "impact": { "cvss": { "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" } }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "CWE-754 Improper Check for Unusual or Exceptional Conditions" } ] }, { "description": [ { "lang": "eng", "value": "Denial of Service (DoS)" } ] } ] }, "references": { "reference_data": [ { "name": "https://kb.juniper.net/JSA11216", "refsource": "CONFIRM", "url": "https://kb.juniper.net/JSA11216" } ] }, "solution": [ { "lang": "eng", "value": "The following software releases have been updated to resolve this specific issue: Junos OS 17.3R3-S12, 17.4R3-S5, 18.1R3-S13, 18.3R3-S5, 18.4R3-S8, 19.1R3-S6, 19.2R1-S7, 19.2R3-S2, 19.3R2-S6, 19.3R3-S3, 19.4R3-S3, 20.1R2-S2, 20.1R3, 20.2R3-S1, 20.3R3, 20.4R2-S1, 20.4R3, 21.1R1-S1, 21.1R2, 21.2R1, and all subsequent releases.\n\nNote: Only those releases listed in the PROBLEM section above are affected. This fix has also been proactively committed into other releases that are not vulnerable to this issue." } ], "source": { "advisory": "JSA11216", "defect": [ "1577814" ], "discovery": "USER" }, "work_around": [ { "lang": "eng", "value": "There are no viable workarounds for this issue." } ] }