SB2020050623 - Multiple vulnerabilities in NGINX Controller

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Main Vulnerability Database SB2020050623

SB2020050623 - Multiple vulnerabilities in NGINX Controller

Published: May 6, 2020

Security Bulletin ID SB2020050623
Severity
High
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

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

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) Incorrect default permissions (CVE-ID: N/A)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to insecure default permissions for files in Analytics, Visibility, and Reporting daemon (AVRD).  A local user with access to the system can view and modify contents of files.


2) Buffer overflow (CVE-ID: CVE-2020-5895)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing messages in Analytics, Visibility, and Reporting daemon. A remote attacker can pass specially crafted message to the application, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


3) Insufficient Session Expiration (CVE-ID: CVE-2020-5894)

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to NGINX Controller webserver does not invalidate the the server-side session token when users log out. A remote non-authenticated attacker can obtain or guess session token and gain unauthorized access to session that belongs to another user.


Remediation

Install update from vendor's website.

References