How to make sure my Squid has no known vulnerabilities?

[roee klinger <roeeklinger60@xxxxxxxxx>]

Hello,

I am installing Squid in Docker (Debian Buster) using Aptitude, the current latest version that is being installed is Squid 4.6-1+deb10u6, today I was contacted by a client that noticed we are using the Squid version 4.6, which is an old version, and he mentioned that there are a few known vulnerabilities with this old version, mainly he was bothered by these:

CVE-2019-13345

CVE-2019-12529

CVE-2019-12527

CVE-2019-12525

CVE-2020-8450

CVE-2020-8449

CVE-2019-12528

CVE-2020-8517

CVE-2020-11945

CVE-2019-12519

CVE-2019-12521

I have checked the available Debian packages, and it seems I am indeed running the latest available version that is provided by Aptitude, which is Squid 4.6, it seems that to get Squid 5.5, I will have to use Debian Bookworm.

Is the version of Squid that I am using backported with security patches that cover the vulnerabilities above or do I have to install Squid 5.6 / 5.5 to get the latest security? 

Thanks,

Roee

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