A bl security update has been released for Ubuntu Linux 18.04 LTS.

USN-5098-1: bl vulnerability

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Ubuntu Security Notice USN-5098-1
September 30, 2021

node-bl vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.04 LTS

Summary:

node-bl could be made to expose sensitive information if it received specially
crafted input.

Software Description:
- node-bl: A Node.js Buffer list collector

Details:

It was discovered that bl didn't properly sanitize the inputs. An attacker
could use this to leak sensitive information.

Update instructions:

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

Ubuntu 18.04 LTS:
node-bl 1.1.2-1ubuntu1.1

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

References:
  https://ubuntu.com/security/notices/USN-5098-1
CVE-2020-8244

Package Information:
  https://launchpad.net/ubuntu/+source/node-bl/1.1.2-1ubuntu1.1