SB2021102301 - Debian update for mailman
Published: October 23, 2021
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Spoofing attack (CVE-ID: CVE-2020-12108)
The vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to incorrect processing of user-supplied data when processing email addresses. A remote attacker can create a specially crafted email and spoof content of email message.
2) Code Injection (CVE-ID: CVE-2020-15011)
The vulnerability allows a remote attacker to inject arbitrary content.
The vulnerability exists due to improper input validation within the Cgi/private.py private archive login page. A remote attacker can send a specially crafted request and inject arbitrary content.
Successful exploitation of the vulnerability requires that the roster visibility (private_roster) setting is 'Anyone'.
3) Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) (CVE-ID: CVE-2021-42096)
The vulnerability allows a remote attacker to brute-force the administrative password.
The vulnerability exists due to a certain csrf_token value is derived from the admin password. A remote attacker can conduct a brute-force attack against that password and gain unauthorized access to the application.
4) Cross-site request forgery (CVE-ID: CVE-2021-42097)
The vulnerability allows a remote attacker to perform cross-site request forgery attacks.
The vulnerability exists due to insufficient validation of the HTTP request origin. A remote attacker can trick the victim to visit a specially crafted web page and take over the admin account, as the csrf_token value is not specific to a single user account.
Remediation
Install update from vendor's website.