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AUSCERT External Security Bulletin Redistribution
ESB-2021.3948
USN-5151-1: Mailman vulnerabilities
19 November 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: Mailman
Publisher: Ubuntu
Operating System: Ubuntu
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Cross-site Scripting -- Remote with User Interaction
Reduced Security -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2021-43332 CVE-2021-43331
Original Bulletin:
https://ubuntu.com/security/notices/USN-5151-1
Comment: This advisory references vulnerabilities in products which run on
platforms other than Ubuntu. It is recommended that administrators
running Mailman check for an updated version of the software for
their operating system.
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USN-5151-1: Mailman vulnerabilities
18 November 2021
Several security issues were fixed in Mailman.
Releases
o Ubuntu 18.04 LTS
o Ubuntu 16.04 ESM
Packages
o mailman - Web-based mailing list manager
Details
It was discovered that Mailman incorrectly handled certain URL.
An attacker could possibly use this issue to execute arbitrary code.
( CVE-2021-43331 )
It was discovered that Mailman incorrectly handled certain inputs.
An attacker could possibly use this issue to expose sensitive information.
( CVE-2021-43332 )
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 18.04
o mailman - 1:2.1.26-1ubuntu0.5
Ubuntu 16.04
o mailman - 1:2.1.20-1ubuntu0.6+esm2
Available with UA Infra or UA Desktop
In general, a standard system update will make all the necessary changes.
References
o CVE-2021-43332
o CVE-2021-43331
o https://launchpad.net/bugs/1949401
o https://launchpad.net/mailman/+bug/1949403
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===========================================================================
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