CVE-2021-44227

Mailman is free software for managing electronic mail discussion and e-newsletter lists. Mailman is integrated with the web, making it easy for users to manage their accounts and for list owners to administer their lists. Mailman supports built-in archiving, automatic bounce processing, content filtering, digest delivery, spam filters, and more.

Security Fix(es):

In GNU Mailman before 2.1.36, the CSRF token for the Cgi/admindb.py admindb page contains an encrypted version of the list admin password. This could potentially be cracked by a moderator via an offline brute-force attack.(CVE-2021-43332)

In GNU Mailman before 2.1.36, a crafted URL to the Cgi/options.py user options page can execute arbitrary JavaScript for XSS.(CVE-2021-43331)

In GNU Mailman before 2.1.38, a list member or moderator can get a CSRF token and craft an admin request (using that token) to set a new admin password or make other changes.(CVE-2021-44227)

In GNU Mailman before 2.1.38, a list member or moderator can get a CSRF token and craft an admin request (using that token) to set a new admin password or make other changes.

Mailman is a program used to help manage e-mail discussion lists.

Security Fix(es):

• mailman: CSRF token bypass allows to perform CSRF attacks and admin takeover (CVE-2021-44227)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

In GNU Mailman before 2.1.38, a list member or moderator can get a CSRF token and craft an admin request (using that token) to set a new admin password or make other changes.

Mailman is a program used to help manage e-mail discussion lists.

Security Fix(es):

• mailman: CSRF token bypass allows to perform CSRF attacks and admin takeover (CVE-2021-44227)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

This update for mailman fixes the following issues:

• CVE-2021-44227: Preventing list moderator or list member accessing the admin UI (bsc#1193316).
• CVE-2021-43332: Preventing list moderator from cracking the list admin password encrypted in a CSRF token (bsc#1192741).
• CVE-2021-43331: Fixed XSS in Cgi/options.py (bsc#1192735).
• CVE-2021-42096: Add protection against remote privilege escalation via csrf_token derived from admin password (bsc#1191959).

It was discovered that Mailman incorrectly handled CSRF tokens. A remote list member or moderator could possibly use their own token to craft an admin request CSRF attack and set a new admin password or make other changes.

It was discovered that Mailman incorrectly handled CSRF tokens. A remote list member or moderator could possibly use their own token to craft an admin request CSRF attack and set a new admin password or make other changes.