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 squid-debuginfoUpgrade squid-migration-scriptUpgrade squid-sysvinitUpgrade squid | Oct 28, 2020 | Sep 2, 2020 |
| Amazon_linux | — | Upgrade squid | Nov 18, 2020 | Aug 27, 2020 |
| Centos_linux | — | Upgrade squid-debugsourceUpgrade libecapUpgrade squid-debuginfoUpgrade libecap-debugsourceUpgrade libecap-develUpgrade libecap-debuginfoUpgrade squidUpgrade squid-migration-scriptUpgrade squid-sysvinit | Sep 4, 2020 | Sep 2, 2020 |
| Debian | — | Upgrade squid | Aug 31, 2020 | Aug 31, 2020 |
| Huawei Euleros 2_0_sp2 | — | Upgrade squid-migration-scriptUpgrade squid | Feb 22, 2021 | Sep 2, 2020 |
| Huawei Euleros 2_0_sp3 | — | Upgrade squid-migration-scriptUpgrade squid | 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 squid-migration-scriptUpgrade libecapUpgrade libecap-develUpgrade squid-sysvinitUpgrade squid | Sep 5, 2020 | Aug 23, 2020 |
| Redhat_linux | — | Upgrade libecapUpgrade libecap-debuginfoUpgrade squid-debugsourceNo solution existsUpgrade libecap-develUpgrade squidUpgrade libecap-debugsourceUpgrade squid-debuginfoUpgrade squid-migration-scriptUpgrade squid-sysvinit | Sep 4, 2020 | Sep 2, 2020 |
| Rocky_linux | — | Upgrade libecap-develUpgrade libecapUpgrade 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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