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An issue was discovered in Squid before 4.9. When handling a URN request, a corresponding HTTP request is made. This HTTP request doesn't go through the access checks that incoming HTTP requests go through. This causes all access checks to be bypassed and allows access to restricted HTTP servers, e.g., an attacker can connect to HTTP servers that only listen on localhost.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade libecap-develUpgrade libecap | May 4, 2022 | Nov 26, 2019 |
| Alpine Linux | — | Upgrade squid | Jan 19, 2021 | Nov 26, 2019 |
| Amazon Linux Ami 2 | — | Upgrade squid-sysvinitUpgrade squid-debuginfoUpgrade squidUpgrade squid-migration-script | Jun 6, 2023 | Nov 26, 2019 |
| Amazon_linux | — | Upgrade squid | Jun 7, 2023 | Nov 14, 2019 |
| Centos_linux | — | Upgrade squid-debugsourceUpgrade squid-debuginfoUpgrade libecap-debugsourceUpgrade libecap-develUpgrade libecap-debuginfoUpgrade libecapUpgrade squid | Nov 5, 2020 | Nov 26, 2019 |
| Debian | — | Upgrade squid | May 11, 2020 | Nov 26, 2019 |
| Huawei Euleros 2_0_sp3 | — | Upgrade squidUpgrade squid-migration-script | Apr 30, 2021 | Nov 26, 2019 |
| Huawei Euleros 2_0_sp5 | — | Upgrade squid | Feb 24, 2020 | Nov 26, 2019 |
| Huawei Euleros 2_0_sp8 | — | Upgrade squid | Jan 3, 2020 | Nov 26, 2019 |
| Oracle Solaris | — | Upgrade web/proxy/squid to version 4.10-11.4.21.0.1.69.0 on Solaris 11.4 | Jan 19, 2021 | Nov 26, 2019 |
| Oracle_linux | — | Upgrade squidUpgrade libecap-develUpgrade libecap | Oct 1, 2022 | Nov 5, 2019 |
| Redhat_linux | — | No solution existsUpgrade squidUpgrade squid-debugsourceUpgrade libecapUpgrade squid-debuginfoUpgrade libecap-debugsourceUpgrade libecap-develUpgrade libecap-debuginfo | Nov 5, 2020 | Nov 26, 2019 |
| Rocky_linux | — | Upgrade libecapUpgrade libecap-debugsourceUpgrade libecap-debuginfoUpgrade libecap-devel | Mar 12, 2024 | Nov 26, 2019 |
| Suse | — | Upgrade squid3Upgrade squid | Nov 22, 2019 | Nov 14, 2019 |
| Ubuntu | — | Upgrade squid | Dec 5, 2019 | Nov 14, 2019 |
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