SB2021111823 - Ubuntu update for mailman

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Main Vulnerability Database SB2021111823

SB2021111823 - Ubuntu update for mailman

Published: November 18, 2021

Security Bulletin ID SB2021111823
Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Cross-site scripting (CVE-ID: CVE-2021-43331)

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in Cgi/options.py. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.


2) Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) (CVE-ID: CVE-2021-43332)

The vulnerability allows a remote user to perform a brute-force attack.

The vulnerability exists due to the CSRF token for the Cgi/admindb.py admindb page contains an encrypted version of the list admin password. A remote user with moderator privileges can perform a brute-force attack against the token and obtain administrator's password.


Remediation

Install update from vendor's website.

References