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An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to incorrect parser validation, it allows a Denial of Service attack against the Cache Manager API. This allows a trusted client to trigger memory leaks that. over time, lead to a Denial of Service via an unspecified short query string. This attack is limited to clients with Cache Manager API access privilege.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade squidUpgrade libecapUpgrade libecap-devel | May 13, 2022 | May 27, 2021 |
| Alpine Linux | — | Upgrade squid | Mar 26, 2024 | May 27, 2021 |
| Amazon Linux Ami 2 | — | Upgrade squid-migration-scriptUpgrade squidUpgrade squid-sysvinitUpgrade squid-debuginfo | Feb 23, 2023 | May 27, 2021 |
| Amazon_linux | — | Upgrade squid | Feb 23, 2023 | May 27, 2021 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | May 27, 2021 |
| Centos_linux | — | Upgrade libecap-develUpgrade squid-debugsourceUpgrade squidUpgrade libecap-debuginfoUpgrade libecap-debugsourceUpgrade libecapUpgrade squid-debuginfo | Nov 10, 2021 | May 27, 2021 |
| Debian | — | Upgrade squid | Jun 3, 2021 | May 27, 2021 |
| Gentoo Linux | — | Upgrade net-proxy/squid. | May 28, 2021 | May 26, 2021 |
| Huawei Euleros 2_0_sp3 | — | Upgrade squidUpgrade squid-migration-script | Feb 24, 2022 | May 27, 2021 |
| Huawei Euleros 2_0_sp5 | — | Upgrade squid | Sep 29, 2021 | May 27, 2021 |
| Huawei Euleros 2_0_sp8 | — | Upgrade squid | Aug 10, 2021 | May 27, 2021 |
| Oracle Solaris | — | Upgrade web/proxy/squid to version 4.15-11.4.39.0.1.107.0 on Solaris 11.4 | Nov 17, 2021 | May 27, 2021 |
| Oracle_linux | — | Upgrade squid-sysvinitUpgrade squid-migration-scriptUpgrade squidUpgrade libecap-develUpgrade libecap | Sep 25, 2021 | May 10, 2021 |
| Redhat_linux | — | Upgrade libecap-debugsourceUpgrade libecapUpgrade libecap-debuginfoUpgrade squid-debuginfoUpgrade squidUpgrade libecap-develUpgrade squid-debugsourceNo solution exists | Nov 10, 2021 | May 27, 2021 |
| Rocky_linux | — | Upgrade libecap-debugsourceUpgrade libecap-debuginfoUpgrade libecapUpgrade squid-debuginfoUpgrade libecap-develUpgrade squid-debugsourceUpgrade squid | Mar 12, 2024 | May 27, 2021 |
| Suse | — | Upgrade squid | Jun 3, 2021 | May 27, 2021 |
| Ubuntu | — | Upgrade squid | Jun 4, 2021 | May 27, 2021 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | May 27, 2021 |
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