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 libecapUpgrade libecap-develUpgrade squid | Jan 9, 2024 | Nov 6, 2023 |
| Alpine Linux | — | Upgrade squid | Mar 21, 2024 | Nov 6, 2023 |
| Amazon Linux Ami 2 | — | Upgrade squidUpgrade squid-migration-scriptUpgrade squid-debuginfoUpgrade squid-sysvinit | Dec 5, 2023 | Nov 6, 2023 |
| Amazon_linux | — | Upgrade squid | Dec 5, 2023 | Nov 6, 2023 |
| Amazon_linux_2023 | — | Upgrade squid-debuginfoUpgrade squid-debugsourceUpgrade squid | 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 squid-migration-scriptUpgrade libecap-develUpgrade squid-sysvinitUpgrade squidUpgrade libecap | Jan 4, 2024 | Sep 26, 2023 |
| Redhat_linux | — | Upgrade squidUpgrade libecap-develNo solution existsUpgrade libecap-debuginfoUpgrade libecap-debugsourceUpgrade squid-debugsourceUpgrade squid-migration-scriptUpgrade squid-debuginfoUpgrade libecapUpgrade squid-sysvinit | Jan 5, 2024 | Nov 6, 2023 |
| Rocky_linux | — | Upgrade squid-debugsourceUpgrade libecapUpgrade squid-debuginfoUpgrade squidUpgrade libecap-debuginfoUpgrade libecap-develUpgrade libecap-debugsource | Mar 5, 2024 | Nov 6, 2023 |
| Suse | — | Upgrade squid | Nov 27, 2023 | Nov 6, 2023 |
| Ubuntu | — | Upgrade squid3 (Ubuntu Pro)Upgrade squid (Ubuntu Pro)Upgrade squid | 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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