Several security issues were fixed in Mailman.
It was discovered that Mailman incorrectly handled certain inputs. An attacker could possibly use this to issue execute arbitrary scripts or HTML. (CVE-2018-0618)
29 April 2020
A security issue affects these releases of Ubuntu and its derivatives:
Several security issues were fixed in Mailman.
It was discovered that Mailman incorrectly handled certain inputs. An attacker could possibly use this to issue execute arbitrary scripts or HTML. (CVE-2018-0618)
It was discovered that Mailman incorrectly handled certain inputs. An attacker could possibly use this issue to display arbitrary text on a web page. (CVE-2018-13796)
It was discovered that Mailman incorrectly handled certain files. An attacker could possibly use this issue to execute arbitrary code. (CVE-2020-12137)
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.
Vulmon