RHSA-2021:4913 - Security Advisory

Topic

An update for mailman is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

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 account takeover (CVE-2021-42097)
• mailman: CSRF token bypass allows to perform CSRF attacks and admin takeover (CVE-2021-44227)
• mailman: CSRF protection missing in the user options page (CVE-2016-6893)

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.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux Server 7 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 7 x86_64
• Red Hat Enterprise Linux Workstation 7 x86_64
• Red Hat Enterprise Linux for IBM z Systems 7 s390x
• Red Hat Enterprise Linux for Power, big endian 7 ppc64
• Red Hat Enterprise Linux for Power, little endian 7 ppc64le
• Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 7 s390x
• Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, big endian 7 ppc64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, little endian 7 ppc64le

Fixes

• BZ - 1370155 - CVE-2016-6893 mailman: CSRF protection missing in the user options page
• BZ - 2020568 - CVE-2021-42097 mailman: CSRF token bypass allows to perform CSRF attacks and account takeover
• BZ - 2026862 - CVE-2021-44227 mailman: CSRF token bypass allows to perform CSRF attacks and admin takeover

CVEs

• CVE-2016-6893
• CVE-2021-42097
• CVE-2021-44227

References

• https://access.redhat.com/security/updates/classification/#important