An issue was discovered in Squid before 4.13 and 5.x before 5.0.4. Due to incorrect data validation, HTTP Request Smuggling attacks may succeed against HTTP and HTTPS traffic. This leads to cache poisoning. This allows any client, including browser scripts, to bypass local security and poison the proxy cache and any downstream caches with content from an arbitrary source. When configured for relaxed header parsing (the default), Squid relays headers containing whitespace characters to upstream servers. When this occurs as a prefix to a Content-Length header, the frame length specified will be ignored by Squid (allowing for a conflicting length to be used from another Content-Length header) but relayed upstream.
CVSS Details
- CVSS 3.1 Base Score: 6.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade squid | Jan 4, 2021 | Sep 2, 2020 |
| Amazon Linux Ami 2 | — | Upgrade squidUpgrade squid-migration-scriptUpgrade squid-sysvinitUpgrade squid-debuginfo | Oct 28, 2020 | Sep 2, 2020 |
| Amazon_linux | — | Upgrade squid | Nov 18, 2020 | Aug 27, 2020 |
| Centos_linux | — | Upgrade libecapUpgrade squid-debuginfoUpgrade squid-debugsourceUpgrade squidUpgrade squid-migration-scriptUpgrade libecap-debuginfoUpgrade libecap-develUpgrade libecap-debugsourceUpgrade squid-sysvinit | Sep 4, 2020 | Sep 2, 2020 |
| Debian | — | Upgrade squid | Aug 31, 2020 | Aug 31, 2020 |
| Huawei Euleros 2_0_sp2 | — | Upgrade squidUpgrade squid-migration-script | Feb 22, 2021 | Sep 2, 2020 |
| Huawei Euleros 2_0_sp3 | — | Upgrade squidUpgrade squid-migration-script | Jan 20, 2021 | Sep 2, 2020 |
| Huawei Euleros 2_0_sp5 | — | Upgrade squid | Feb 3, 2021 | Sep 2, 2020 |
| Huawei Euleros 2_0_sp8 | — | Upgrade squid | Dec 15, 2020 | Sep 2, 2020 |
| Oracle_linux | — | Upgrade libecap-develUpgrade libecapUpgrade squid-migration-scriptUpgrade squidUpgrade squid-sysvinit | Sep 5, 2020 | Aug 23, 2020 |
| Redhat_linux | — | Upgrade libecap-develUpgrade squid-sysvinitUpgrade squidUpgrade libecap-debugsourceNo solution existsUpgrade squid-migration-scriptUpgrade squid-debuginfoUpgrade libecap-debuginfoUpgrade squid-debugsourceUpgrade libecap | Sep 4, 2020 | Sep 2, 2020 |
| Rocky_linux | — | Upgrade libecapUpgrade libecap-develUpgrade libecap-debugsourceUpgrade libecap-debuginfo | Mar 12, 2024 | Sep 2, 2020 |
| Suse | — | Upgrade squidUpgrade squid3 | Sep 3, 2020 | Aug 27, 2020 |
| Ubuntu | — | Upgrade squid | Aug 28, 2020 | Aug 27, 2020 |
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