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 libecap-develUpgrade squid-migration-scriptUpgrade squidUpgrade libecap-debugsourceUpgrade libecap-debuginfoUpgrade squid-sysvinitUpgrade squid-debuginfoUpgrade squid-debugsourceUpgrade libecap | 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 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 libecapUpgrade squid-migration-scriptUpgrade libecap-develUpgrade squidUpgrade squid-sysvinit | Sep 5, 2020 | Aug 23, 2020 |
| Redhat_linux | — | Upgrade libecapUpgrade squid-debugsourceUpgrade libecap-debuginfoUpgrade squid-migration-scriptUpgrade libecap-debugsourceNo solution existsUpgrade libecap-develUpgrade squidUpgrade squid-sysvinitUpgrade squid-debuginfo | Sep 4, 2020 | Sep 2, 2020 |
| Rocky_linux | — | Upgrade libecap-develUpgrade libecap-debuginfoUpgrade libecapUpgrade libecap-debugsource | 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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