SB2021091201 - Improper access control in GNU Mailman Postorius

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2021091201

SB2021091201 - Improper access control in GNU Mailman Postorius

Published: September 12, 2021

Security Bulletin ID SB2021091201
Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Improper access control (CVE-ID: CVE-2021-40347)

The vulnerability allows a remote user to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions in views/list.py. A remote user logged in into any account can send a specially crafted HTTP POST request to unsubscribe any user from a mailing list, also revealing whether that address was subscribed in the first place.


Remediation

Install update from vendor's website.

References