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AUSCERT External Security Bulletin Redistribution
ESB-2021.3643
USN-5121-2: Mailman vulnerabilities
2 November 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: Mailman
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Increased Privileges -- Remote with User Interaction
Cross-site Request Forgery -- Remote with User Interaction
Cross-site Scripting -- Remote with User Interaction
Access Confidential Data -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2021-42097 CVE-2021-42096 CVE-2020-15011
CVE-2020-12137 CVE-2020-12108
Reference: ESB-2021.3534
ESB-2021.3529
ESB-2021.1722
Original Bulletin:
https://ubuntu.com/security/notices/USN-5121-2
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USN-5121-2: Mailman vulnerabilities
01 November 2021
Several security issues were fixed in Mailman.
Releases
o Ubuntu 20.04 LTS
Packages
o mailman - Web-based mailing list manager
Details
USN-5009-1 fixed vulnerabilities in Mailman. This update provides the
corresponding updates for Ubuntu 20.04 LTS. In addition, the following CVEs
were fixed:
It was discovered that Mailman allows arbitrary content injection. An attacker
could use this to inject malicious content. ( CVE-2020-12108 , CVE-2020-15011 )
It was discovered that Mailman improperly sanitize the MIME content. An
attacker could obtain sensitive information by sending a special type of
attachment. ( CVE-2020-12137 )
Original advisory details:
Andre Protas, Richard Cloke, and Andy Nuttall discovered that Mailman
did not properly associate cross-site request forgery (CSRF) tokens
to specific accounts. A remote attacker could use this to perform a
CSRF attack to gain access to another account. ( CVE-2021-42097 )
Andre Protas, Richard Cloke, and Andy Nuttall discovered that Mailman's
cross-site request forgery (CSRF) tokens for the options page are
derived from the admin password. A remote attacker could possibly use
this to assist in performing a brute force attack against the admin
password. ( CVE-2021-42096 )
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 20.04
o mailman - 1:2.1.29-1ubuntu3.1
In general, a standard system update will make all the necessary changes.
References
o CVE-2020-12108
o CVE-2020-12137
o CVE-2021-42096
o CVE-2020-15011
o CVE-2021-42097
Related notices
o USN-4406-1 : mailman
o USN-4348-1 : mailman
o USN-4354-1 : mailman
o USN-5121-1 : mailman
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