CVE-2019-1836

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Summary

CVECVE-2019-1836
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2019-05-03 17:29:00 UTC
Updated2020-10-13 20:27:00 UTC
DescriptionA 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).

Risk And Classification

Problem Types: CWE-59

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Cisco Nexus 9300 - All All All
Hardware Cisco Nexus 9300 - All All All
Hardware Cisco Nexus 9500 - All All All
Hardware Cisco Nexus 9500 - All All All
Operating System Cisco Nx-os 14.0(3d) All All All
Operating System Cisco Nx-os 14.0\(3d\) All All All
Operating System Cisco Nx-os 14.0\(3d\) All All All

References

ReferenceSourceLinkTags
Cisco Nexus 9000 Series Fabric Switches Path Traversal Arbitrary File Write Vulnerability BID www.securityfocus.com Third Party Advisory, VDB Entry
Cisco Nexus 9000 Series Fabric Switches Application Centric Infrastructure Mode Symbolic Link Path Traversal Vulnerability CISCO tools.cisco.com Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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