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An issue was discovered in Squid 4.0.23 through 4.7. When checking Basic Authentication with HttpHeader::getAuth, Squid uses a global buffer to store the decoded data. Squid does not check that the decoded length isn't greater than the buffer, leading to a heap-based buffer overflow with user controlled data.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade libecapUpgrade libecap-devel | May 13, 2022 | Jul 11, 2019 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Jul 11, 2019 |
| Centos_linux | — | Upgrade squid-debugsourceUpgrade libecapUpgrade squid-debuginfoUpgrade squidUpgrade libecap-develUpgrade libecap-debugsourceUpgrade libecap-debuginfo | Sep 3, 2019 | Jul 11, 2019 |
| Debian | — | Upgrade squid | Oct 22, 2019 | Jul 11, 2019 |
| Huawei Euleros 2_0_sp8 | — | Upgrade squid | Sep 30, 2019 | Jul 11, 2019 |
| Oracle Solaris | — | Upgrade web/proxy/squid to version 4.8-11.4.15.0.1.3.0 on Solaris 11.4 | Nov 20, 2019 | Jul 11, 2019 |
| Oracle_linux | — | Upgrade libecapUpgrade squidUpgrade libecap-devel | Jul 21, 2020 | Jul 12, 2019 |
| Redhat_linux | — | Upgrade squid-debuginfoUpgrade libecap-debugsourceUpgrade libecapUpgrade libecap-debuginfoUpgrade squid-debugsourceUpgrade squidUpgrade libecap-devel | Sep 3, 2019 | Jul 11, 2019 |
| Rocky_linux | — | Upgrade libecap-debuginfoUpgrade libecap-debugsourceUpgrade libecapUpgrade libecap-devel | Mar 12, 2024 | Jul 11, 2019 |
| Suse | — | Upgrade squid | Nov 22, 2019 | Jul 11, 2019 |
| Ubuntu | — | Upgrade squid | Jul 19, 2019 | Jul 11, 2019 |
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