Ubuntu Security Notices
USN-5151-2

USN-5151-2: Mailman vulnerabilities

Publication date

25 November 2021

Overview

Several security issues were fixed in Mailman.

Releases

20.04 LTS

Packages

mailman - Web-based mailing list manager

Details

USN-5151-1 fixed several vulnerabilities in Mailman. This update provides
the corresponding update for Ubuntu 20.04 ESM.

Original advisory 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)

USN-5151-1 fixed several vulnerabilities in Mailman. This update provides
the corresponding update for Ubuntu 20.04 ESM.

Original advisory 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

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release	Package Version
20.04 focal	mailman – 1:2.1.29-1ubuntu3.1+esm1

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References

USN-5151-1

USN-5151-1