SB2021012117 - Multiple vulnerabilities in Cisco Data Center Network Manager



SB2021012117 - Multiple vulnerabilities in Cisco Data Center Network Manager

Published: January 21, 2021

Security Bulletin ID SB2021012117
Severity
Medium
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 67% Low 33%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) Path traversal (CVE-ID: CVE-2021-1133)

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in the REST API. A remote authenticated attacker can send a specially crafted HTTP request and delete arbitrary files on the file system.


2) Path traversal (CVE-ID: CVE-2021-1135)

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in a certain REST API endpoint. A remote authenticated attacker can send a specially crafted HTTP request and overwrite or list arbitrary files on the affected device.


3) Input validation error (CVE-ID: CVE-2021-1255)

The vulnerability allows a remote attacker to bypass security controls on the system.

The vulnerability exists due to an incorrect comparison in a denylist implementation. A remote authenticated attacker can send specially crafted network traffic and modify server configuration settings on the affected device.


Remediation

Install update from vendor's website.