{"id":"CVE-2019-1836","published":"2019-05-03T16:30:16Z","modified":"2024-11-21T19:34:07Z","title":"Cisco Nexus 9000 Series Fabric Switches Application Centric Infrastructure Mode Symbolic Link Path Traversal…","vendor":"Cisco","product":"Cisco NX-OS Software for Nexus 9000 Series Fabric Switches ACI Mode","tier":"core","eol":null,"affectedVersions":[{"vendor":"Cisco","product":"Cisco NX-OS Software for Nexus 9000 Series Fabric Switches ACI Mode","versions":[">= unspecified, < 14.1(1i)"]}],"description":{"text":"A vulnerability in the system shell for Cisco Nexus 9000 Series Fabric Switches in Application Centric Infrastructure (ACI) mode could allow an authenticated, local attacker to use symbolic links to overwrite system files. These system files may be sensitive and should not be overwritable by non-root users. The attacker would need valid device credentials. The vulnerability is due to incorrect symbolic link verification of directory paths when they are used in the system shell. An attacker could exploit this vulnerability by authenticating to the device and providing crafted user input to specific symbolic link CLI commands. Successful exploitation could allow the attacker to overwrite system files that should be restricted. This vulnerability has been fixed in software version 14.1(1i).","provenance":"source","from":"CVE.org"},"summary":null,"cvss":{"score":5.5,"severity":"MEDIUM","version":"3.0","vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.00438,"percentile":0.37974,"date":"2026-10-28","provenance":"source"},"kev":null,"vulncheckKev":null,"exploited":false,"otx":{"pulseCount":3,"pulses":[{"name":"Spam “Broken Seal” DocuSign-themed Delivery w/Fileless Process Hollowing (Zeppelin/Bloat-A) by msudosos","url":"https://otx.alienvault.com/pulse/69bf64eccb5d39a90a3c391e","created":"2026-03-22"},{"name":"Spam “Broken Seal” DocuSign-themed Delivery w/Fileless Process Hollowing (Zeppelin/Bloat-A) by msudosos","url":"https://otx.alienvault.com/pulse/69bf64e1d5e06aa6207f78de","created":"2026-03-22"},{"name":"“Broken Seal” DocuSign-themed Delivery with Fileless Process Hollowing (Zeppelin/Bloat-A)","url":"https://otx.alienvault.com/pulse/698e93e1ab02db8c49e8c3ed","created":"2026-02-13"}],"provenance":"machine"},"cwes":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"references":[{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-fabric-traversal","tags":["vendor-advisory","x_refsource_CISCO"]},{"url":"http://www.securityfocus.com/bid/108150","tags":["vdb-entry","x_refsource_BID"]}],"techniques":[{"id":"T1133","name":"External Remote Services","tactics":["initial-access","persistence"],"provenance":"source","basis":"ctid-cve","bases":["ctid-cve"],"basisDetail":"CTID attack_to_cve (Phase 2)","mappingType":"exploitation_technique","evidence":[],"confidence":"high"},{"id":"T1565.001","name":"Stored Data Manipulation","tactics":["impact"],"provenance":"source","basis":"ctid-cve","bases":["ctid-cve"],"basisDetail":"CTID attack_to_cve (Phase 2)","mappingType":"primary_impact","evidence":[],"confidence":"high"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2019-10393","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2019-10393","exploited":false,"exploitedSince":null,"provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[{"stage":"exploitation","techniques":["T1133"],"provenance":"source"},{"stage":"primary","techniques":["T1565.001"],"provenance":"source"}],"timeline":[{"date":"2019-05-03","kind":"published","label":"Published (CVE.org)","url":"https://www.cve.org/CVERecord?id=CVE-2019-1836","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":null},"priority":{"score":12.8,"factors":[{"name":"In a KEV catalog","points":0.0,"detail":"not listed"},{"name":"Recent KEV listing","points":0.0,"detail":"not listed"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":7.59,"detail":"percentile 0.3797"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":0.0,"detail":"none found"},{"name":"Mentioned in OTX pulses","points":1.37,"detail":"3 pulses"},{"name":"CVSS severity","points":3.85,"detail":"base score 5.5"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}