Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2019-1836

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).

Published

2019-05-03T17:29:01.047

Last Modified

2024-11-21T04:37:30.010

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.1 (HIGH)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:N/I:C/A:C

  • Access Vector: LOCAL
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: COMPLETE
  • Availability Impact: COMPLETE
Exploitability Score

3.9

Impact Score

9.2

Weaknesses
  • Type: Secondary
    CWE-22
  • Type: Primary
    CWE-59
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System cisco nx-os 14.0\(3d\) Yes
Hardware cisco nexus_9300 - No
Hardware cisco nexus_9500 - No
References