{"id":"CVE-2021-0210","state":"PUBLISHED","title":"Junos OS: Privilege escalation in J-Web due to arbitrary command and code execution via information disclosure from another users active session","description":"An Information Exposure vulnerability in J-Web of Juniper Networks Junos OS allows an unauthenticated attacker to elevate their privileges over the target system through opportunistic use of an authenticated users session. This issue affects: Juniper Networks Junos OS 12.3 versions prior to 12.3R12-S17; 17.3 versions prior to 17.3R3-S10; 17.4 versions prior to 17.4R2-S12, 17.4R3-S3; 18.1 versions prior to 18.1R3-S11; 18.2 versions prior to 18.2R3-S6; 18.3 versions prior to 18.3R2-S4, 18.3R3-S4; 18.4 versions prior to 18.4R2-S5, 18.4R3-S5; 19.1 versions prior to 19.1R1-S6, 19.1R2-S2, 19.1R3-S3; 19.2 versions prior to 19.2R1-S5, 19.2R3, 19.2R3-S1; 19.3 versions prior to 19.3R2-S4, 19.3R3; 19.4 versions prior to 19.4R1-S3, 19.4R2-S2, 19.4R3; 20.1 versions prior to 20.1R1-S4, 20.1R2; 20.2 versions prior to 20.2R1-S1, 20.2R2.","publishedAt":"2021-01-15T17:35:56.895Z","updatedAt":"2024-09-16T22:26:01.525Z","severity":{"score":6.8,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","source":"juniper"},"assigner":"juniper","products":["Juniper Networks Junos OS"],"affected":[{"vendor":"Juniper Networks","product":"Junos OS","versions":[{"version":"12.3","status":"affected","lessThan":"12.3R12-S17","versionType":"custom"},{"version":"17.3","status":"affected","lessThan":"17.3R3-S10","versionType":"custom"},{"version":"17.4","status":"affected","lessThan":"17.4R2-S12, 17.4R3-S3","versionType":"custom"},{"version":"18.1","status":"affected","lessThan":"18.1R3-S11","versionType":"custom"},{"version":"18.2","status":"affected","lessThan":"18.2R3-S6","versionType":"custom"},{"version":"18.3","status":"affected","lessThan":"18.3R2-S4, 18.3R3-S4","versionType":"custom"},{"version":"18.4","status":"affected","lessThan":"18.4R2-S5, 18.4R3-S5","versionType":"custom"},{"version":"19.1","status":"affected","lessThan":"19.1R1-S6, 19.1R2-S2, 19.1R3-S3","versionType":"custom"},{"version":"19.2","status":"affected","lessThan":"19.2R1-S5, 19.2R3, 19.2R3-S1","versionType":"custom"},{"version":"19.3","status":"affected","lessThan":"19.3R2-S4, 19.3R3","versionType":"custom"},{"version":"19.4","status":"affected","lessThan":"19.4R1-S3, 19.4R2-S2, 19.4R3","versionType":"custom"},{"version":"20.1","status":"affected","lessThan":"20.1R1-S4, 20.1R2","versionType":"custom"},{"version":"20.2","status":"affected","lessThan":"20.2R1-S1, 20.2R2","versionType":"custom"}]}],"references":["https://kb.juniper.net/JSA11100"],"weaknesses":["CWE-200"],"ingestedAt":"2026-10-29T19:47:50.134Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/0xxx/CVE-2021-0210.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-0210","state":"PUBLISHED","datePublished":"2021-01-15T17:35:56.895Z","dateUpdated":"2024-09-16T22:26:01.525Z","assignerShortName":"juniper","assignerOrgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","dateReserved":"2020-10-27T00:00:00.000Z"},"containers":{"cna":{"title":"Junos OS: Privilege escalation in J-Web due to arbitrary command and code execution via information disclosure from another users active session","descriptions":[{"lang":"en","value":"An Information Exposure vulnerability in J-Web of Juniper Networks Junos OS allows an unauthenticated attacker to elevate their privileges over the target system through opportunistic use of an authenticated users session. This issue affects: Juniper Networks Junos OS 12.3 versions prior to 12.3R12-S17; 17.3 versions prior to 17.3R3-S10; 17.4 versions prior to 17.4R2-S12, 17.4R3-S3; 18.1 versions prior to 18.1R3-S11; 18.2 versions prior to 18.2R3-S6; 18.3 versions prior to 18.3R2-S4, 18.3R3-S4; 18.4 versions prior to 18.4R2-S5, 18.4R3-S5; 19.1 versions prior to 19.1R1-S6, 19.1R2-S2, 19.1R3-S3; 19.2 versions prior to 19.2R1-S5, 19.2R3, 19.2R3-S1; 19.3 versions prior to 19.3R2-S4, 19.3R3; 19.4 versions prior to 19.4R1-S3, 19.4R2-S2, 19.4R3; 20.1 versions prior to 20.1R1-S4, 20.1R2; 20.2 versions prior to 20.2R1-S1, 20.2R2."}],"affected":[{"vendor":"Juniper Networks","product":"Junos OS","versions":[{"version":"12.3","status":"affected","lessThan":"12.3R12-S17","versionType":"custom"},{"version":"17.3","status":"affected","lessThan":"17.3R3-S10","versionType":"custom"},{"version":"17.4","status":"affected","lessThan":"17.4R2-S12, 17.4R3-S3","versionType":"custom"},{"version":"18.1","status":"affected","lessThan":"18.1R3-S11","versionType":"custom"},{"version":"18.2","status":"affected","lessThan":"18.2R3-S6","versionType":"custom"},{"version":"18.3","status":"affected","lessThan":"18.3R2-S4, 18.3R3-S4","versionType":"custom"},{"version":"18.4","status":"affected","lessThan":"18.4R2-S5, 18.4R3-S5","versionType":"custom"},{"version":"19.1","status":"affected","lessThan":"19.1R1-S6, 19.1R2-S2, 19.1R3-S3","versionType":"custom"},{"version":"19.2","status":"affected","lessThan":"19.2R1-S5, 19.2R3, 19.2R3-S1","versionType":"custom"},{"version":"19.3","status":"affected","lessThan":"19.3R2-S4, 19.3R3","versionType":"custom"},{"version":"19.4","status":"affected","lessThan":"19.4R1-S3, 19.4R2-S2, 19.4R3","versionType":"custom"},{"version":"20.1","status":"affected","lessThan":"20.1R1-S4, 20.1R2","versionType":"custom"},{"version":"20.2","status":"affected","lessThan":"20.2R1-S1, 20.2R2","versionType":"custom"}]}],"references":[{"url":"https://kb.juniper.net/JSA11100","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.8,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"description":"Privilege Escalation","lang":"en","type":"text"}]},{"descriptions":[{"cweId":"CWE-200","description":"CWE-200 Information Exposure","lang":"en","type":"CWE"}]},{"descriptions":[{"description":"Arbitrary Code Execution","lang":"en","type":"text"}]},{"descriptions":[{"description":"Arbitrary Command Execution","lang":"en","type":"text"}]}],"providerMetadata":{"shortName":"juniper","dateUpdated":"2021-01-15T17:35:56.000Z","orgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968"},"configurations":[{"lang":"en","value":"The following minimal configuration is required:\n \n  [system services web-management]"}],"credits":[{"lang":"en","value":"Lena David and Geoffrey Bertoli of Synacktiv (https://synacktiv.com)"}],"datePublic":"2021-01-13T00:00:00.000Z","exploits":[{"lang":"en","value":"Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}],"solutions":[{"lang":"en","value":"The following software releases have been updated to resolve this specific issue: 12.3R12-S17,  15.1R7-S8, 17.3R3-S10, 17.4R2-S12, 17.4R3-S3, 18.1R3-S11, 18.2R3-S6, 18.3R2-S4, 18.3R3-S4, 18.4R2-S5, 18.4R3-S5, 19.1R1-S6, 19.1R2-S2, 19.1R3-S3, 19.2R1-S5, 19.2R3, 19.2R3-S1, 19.3R2-S4, 19.3R3, 19.4R1-S3, 19.4R2-S2, 19.4R3, 20.1R1-S4, 20.1R2, 20.2R1-S1, 20.2R2, 20.3R1, and all subsequent releases."}],"source":{"advisory":"JSA11100","defect":["1518212"],"discovery":"EXTERNAL"},"workarounds":[{"lang":"en","value":"There are no known workarounds for this issue."}],"x_generator":{"engine":"Vulnogram 0.0.9"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"sirt@juniper.net","DATE_PUBLIC":"2021-01-13T16:00:00.000Z","ID":"CVE-2021-0210","STATE":"PUBLIC","TITLE":"Junos OS: Privilege escalation in J-Web due to arbitrary command and code execution via information disclosure from another users active session"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"Junos OS","version":{"version_data":[{"version_affected":"<","version_name":"12.3","version_value":"12.3R12-S17"},{"version_affected":"<","version_name":"17.3","version_value":"17.3R3-S10"},{"version_affected":"<","version_name":"17.4","version_value":"17.4R2-S12, 17.4R3-S3"},{"version_affected":"<","version_name":"18.1","version_value":"18.1R3-S11"},{"version_affected":"<","version_name":"18.2","version_value":"18.2R3-S6"},{"version_affected":"<","version_name":"18.3","version_value":"18.3R2-S4, 18.3R3-S4"},{"version_affected":"<","version_name":"18.4","version_value":"18.4R2-S5, 18.4R3-S5"},{"version_affected":"<","version_name":"19.1","version_value":"19.1R1-S6, 19.1R2-S2, 19.1R3-S3"},{"version_affected":"<","version_name":"19.2","version_value":"19.2R1-S5, 19.2R3, 19.2R3-S1"},{"version_affected":"<","version_name":"19.3","version_value":"19.3R2-S4, 19.3R3"},{"version_affected":"<","version_name":"19.4","version_value":"19.4R1-S3, 19.4R2-S2, 19.4R3"},{"version_affected":"<","version_name":"20.1","version_value":"20.1R1-S4, 20.1R2"},{"version_affected":"<","version_name":"20.2","version_value":"20.2R1-S1, 20.2R2"}]}}]},"vendor_name":"Juniper Networks"}]}},"configuration":[{"lang":"en","value":"The following minimal configuration is required:\n \n  [system services web-management]"}],"credit":[{"lang":"eng","value":"Lena David and Geoffrey Bertoli of Synacktiv (https://synacktiv.com)"}],"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"An Information Exposure vulnerability in J-Web of Juniper Networks Junos OS allows an unauthenticated attacker to elevate their privileges over the target system through opportunistic use of an authenticated users session. This issue affects: Juniper Networks Junos OS 12.3 versions prior to 12.3R12-S17; 17.3 versions prior to 17.3R3-S10; 17.4 versions prior to 17.4R2-S12, 17.4R3-S3; 18.1 versions prior to 18.1R3-S11; 18.2 versions prior to 18.2R3-S6; 18.3 versions prior to 18.3R2-S4, 18.3R3-S4; 18.4 versions prior to 18.4R2-S5, 18.4R3-S5; 19.1 versions prior to 19.1R1-S6, 19.1R2-S2, 19.1R3-S3; 19.2 versions prior to 19.2R1-S5, 19.2R3, 19.2R3-S1; 19.3 versions prior to 19.3R2-S4, 19.3R3; 19.4 versions prior to 19.4R1-S3, 19.4R2-S2, 19.4R3; 20.1 versions prior to 20.1R1-S4, 20.1R2; 20.2 versions prior to 20.2R1-S1, 20.2R2."}]},"exploit":[{"lang":"en","value":"Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}],"generator":{"engine":"Vulnogram 0.0.9"},"impact":{"cvss":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.8,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Privilege Escalation"}]},{"description":[{"lang":"eng","value":"CWE-200 Information Exposure"}]},{"description":[{"lang":"eng","value":"Arbitrary Code Execution"}]},{"description":[{"lang":"eng","value":"Arbitrary Command Execution"}]}]},"references":{"reference_data":[{"name":"https://kb.juniper.net/JSA11100","refsource":"CONFIRM","url":"https://kb.juniper.net/JSA11100"}]},"solution":[{"lang":"en","value":"The following software releases have been updated to resolve this specific issue: 12.3R12-S17,  15.1R7-S8, 17.3R3-S10, 17.4R2-S12, 17.4R3-S3, 18.1R3-S11, 18.2R3-S6, 18.3R2-S4, 18.3R3-S4, 18.4R2-S5, 18.4R3-S5, 19.1R1-S6, 19.1R2-S2, 19.1R3-S3, 19.2R1-S5, 19.2R3, 19.2R3-S1, 19.3R2-S4, 19.3R3, 19.4R1-S3, 19.4R2-S2, 19.4R3, 20.1R1-S4, 20.1R2, 20.2R1-S1, 20.2R2, 20.3R1, and all subsequent releases."}],"source":{"advisory":"JSA11100","defect":["1518212"],"discovery":"EXTERNAL"},"work_around":[{"lang":"en","value":"There are no known workarounds for this issue."}]}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://kb.juniper.net/JSA11100","tags":["x_refsource_CONFIRM","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-03T15:32:09.932Z"}}]}}}