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 | alma-upgrade-libecapalma-upgrade-libecap-develalma-upgrade-squid | Jan 9, 2024 | Nov 6, 2023 | |
| Alpine Linux | alpine-linux-upgrade-squid | Mar 21, 2024 | Nov 6, 2023 | |
| Amazon Linux Ami 2 | amazon-linux-ami-2-upgrade-squidamazon-linux-ami-2-upgrade-squid-debuginfoamazon-linux-ami-2-upgrade-squid-migration-scriptamazon-linux-ami-2-upgrade-squid-sysvinit | Dec 5, 2023 | Nov 6, 2023 | |
| Amazon_linux | — | amazon-linux-upgrade-squid | Dec 5, 2023 | Nov 6, 2023 |
| Amazon_linux_2023 | amazon-linux-2023-upgrade-squidamazon-linux-2023-upgrade-squid-debuginfoamazon-linux-2023-upgrade-squid-debugsource | Feb 17, 2025 | Sep 26, 2023 | |
| Centos_linux | — | centos-upgrade-squidcentos-upgrade-squid-debuginfocentos-upgrade-squid-migration-scriptcentos-upgrade-squid-sysvinit | Jan 5, 2024 | Nov 6, 2023 |
| Debian | debian-upgrade-squid | May 15, 2025 | Nov 6, 2023 | |
| Huawei Euleros 2_0_sp8 | huawei-euleros-2_0_sp8-upgrade-squid | Mar 13, 2024 | Nov 6, 2023 | |
| Oracle_linux | oracle-linux-upgrade-libecaporacle-linux-upgrade-libecap-develoracle-linux-upgrade-squidoracle-linux-upgrade-squid-migration-scriptoracle-linux-upgrade-squid-sysvinit | Jan 4, 2024 | Sep 26, 2023 | |
| Redhat_linux | no-fix-redhat-rpm-packageredhat-upgrade-libecapredhat-upgrade-libecap-debuginforedhat-upgrade-libecap-debugsourceredhat-upgrade-libecap-develredhat-upgrade-squidredhat-upgrade-squid-debuginforedhat-upgrade-squid-debugsourceredhat-upgrade-squid-migration-scriptredhat-upgrade-squid-sysvinit | Jan 5, 2024 | Nov 6, 2023 | |
| Rocky_linux | rocky-upgrade-libecaprocky-upgrade-libecap-debuginforocky-upgrade-libecap-debugsourcerocky-upgrade-libecap-develrocky-upgrade-squidrocky-upgrade-squid-debuginforocky-upgrade-squid-debugsource | Mar 5, 2024 | Nov 6, 2023 | |
| Suse | — | suse-upgrade-squid | Nov 27, 2023 | Nov 6, 2023 |
| Ubuntu | ubuntu-pro-upgrade-squidubuntu-pro-upgrade-squid3ubuntu-upgrade-squid | Nov 23, 2023 | Nov 6, 2023 | |
| Vmware Photon_os | vmware-photon_os_update_tdnf | Jan 20, 2025 | Nov 6, 2023 |
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