Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to a NULL pointer dereference bug Squid is vulnerable to a Denial of Service attack against Squid's Gopher gateway. The gopher protocol is always available and enabled in Squid prior to Squid 6.0.1. Responses triggering this bug are possible to be received from any gopher server, even those without malicious intent. Gopher support has been removed in Squid version 6.0.1. Users are advised to upgrade. Users unable to upgrade should reject all gopher URL requests.
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade squidUpgrade libecapUpgrade libecap-devel | Jan 9, 2024 | Nov 6, 2023 |
| Alpine Linux | — | Upgrade squid | Mar 21, 2024 | Nov 6, 2023 |
| Amazon Linux Ami 2 | — | Upgrade squid-debuginfoUpgrade squid-migration-scriptUpgrade squid-sysvinitUpgrade squid | Dec 5, 2023 | Nov 6, 2023 |
| Amazon_linux | — | Upgrade squid | Dec 5, 2023 | Nov 6, 2023 |
| Amazon_linux_2023 | — | Upgrade squidUpgrade squid-debuginfoUpgrade squid-debugsource | Feb 17, 2025 | Sep 26, 2023 |
| Centos_linux | — | Upgrade squid-sysvinitUpgrade squidUpgrade squid-migration-scriptUpgrade squid-debuginfo | Jan 5, 2024 | Nov 6, 2023 |
| Debian | — | Upgrade squid | May 15, 2025 | Nov 6, 2023 |
| Huawei Euleros 2_0_sp8 | — | Upgrade squid | Mar 13, 2024 | Nov 6, 2023 |
| Oracle_linux | — | Upgrade libecapUpgrade squidUpgrade libecap-develUpgrade squid-migration-scriptUpgrade squid-sysvinit | Jan 4, 2024 | Sep 26, 2023 |
| Redhat_linux | — | Upgrade squid-migration-scriptUpgrade squid-debugsourceUpgrade squid-debuginfoUpgrade libecap-debuginfoUpgrade libecapUpgrade squid-sysvinitUpgrade libecap-debugsourceUpgrade squidUpgrade libecap-develNo solution exists | Jan 5, 2024 | Nov 6, 2023 |
| Rocky_linux | — | Upgrade squid-debugsourceUpgrade libecapUpgrade squid-debuginfoUpgrade squidUpgrade libecap-develUpgrade libecap-debugsourceUpgrade libecap-debuginfo | Mar 5, 2024 | Nov 6, 2023 |
| Suse | — | Upgrade squid | Nov 27, 2023 | Nov 6, 2023 |
| Ubuntu | — | Upgrade squid3 (Ubuntu Pro)Upgrade squidUpgrade squid (Ubuntu Pro) | Nov 23, 2023 | Nov 6, 2023 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Nov 6, 2023 |
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