A Sympa security update has been released for Ubuntu Linux 14.04 ESM.

USN-4442-1: Sympa vulnerabilities

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Ubuntu Security Notice USN-4442-1
July 28, 2020

sympa vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 14.04 ESM

Summary:

Several security issues were fixed in Sympa.

Software Description:
- sympa: Modern mailing list manager

Details:

Michael Kaczmarczik discovered that Sympa incorrectly handled HTTP
GET/POST requests. An attacker could possibly use this issue to insert,
edit or obtain sensitive information. (CVE-2018-1000550)

It was discovered that Sympa incorrectly handled URL parameters. An
attacker could possibly use this issue to perform XSS attacks.
(CVE-2018-1000671)

Nicolas Chatelain discovered that Sympa incorrectly handled environment
variables. An attacker could possibly use this issue with a setuid
binary and gain root privileges. (CVE-2020-10936)

Update instructions:

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

Ubuntu 14.04 ESM:
sympa 6.1.17~dfsg-1ubuntu0.1~esm1

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

References:
  https://usn.ubuntu.com/4442-1
CVE-2018-1000550, CVE-2018-1000671, CVE-2020-10936