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Debian LTS Advisory DLA-2278-1               debian-lts@lists.debian.org
https://www.debian.org/lts/security/                     Markus Koschany
July 10, 2020                                https://wiki.debian.org/LTS
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Package        : squid3
Version        : 3.5.23-5+deb9u2
CVE ID         : CVE-2018-19132 CVE-2019-12519 CVE-2019-12520
                 CVE-2019-12521 CVE-2019-12523 CVE-2019-12524
                 CVE-2019-12525 CVE-2019-12526 CVE-2019-12528
                 CVE-2019-12529 CVE-2019-13345 CVE-2019-18676
                 CVE-2019-18677 CVE-2019-18678 CVE-2019-18679
                 CVE-2019-18860 CVE-2020-8449 CVE-2020-8450
                 CVE-2020-11945
Debian Bug     : 950802 931478 950925 912294

It was found that Squid, a high-performance proxy caching server for
web clients, has been affected by multiple security vulnerabilities.
Due to incorrect input validation and URL request handling it was
possible to bypass access restrictions for restricted HTTP serversand to cause a denial-of-service.

For Debian 9 stretch, these problems have been fixed in version
3.5.23-5+deb9u2.

We recommend that you upgrade your squid3 packages.

For the detailed security status of squid3 please refer to
its security tracker page at:

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS