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9.2Crítica

CVE-2026-33526Squid vulnerable to Denial of Service in ICP Request handling

squid-cache squid; Red Hat Red Hat Enterprise Linux 10; Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Red Hat Enterprise Linux 7 Exten… Publicada: (hace 7 meses)

Descripción

Squid is a caching proxy for the Web. Prior to version 7.5, due to heap Use-After-Free, Squid is vulnerable to Denial of Service when handling ICP traffic. This problem allows a remote attacker to perform a reliable and repeatable Denial of Service attack against the Squid service using ICP protocol. This attack is limited to Squid deployments that explicitly enable ICP support (i.e. configure non-zero `icp_port`). This problem _cannot_ be mitigated by denying ICP queries using `icp_access` rules. Version 7.5 contains a patch.

Debilidad (CWE): CWE-416CWE-826CWE-825

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

FabricanteProductoVersiones
Red Hat Red Hat Enterprise Linux 10 all versions
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support all versions
Red Hat Red Hat Enterprise Linux 6 —
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support all versions
Red Hat Red Hat Enterprise Linux 8 all versions
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support all versions
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On all versions
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support all versions
Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service all versions
Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions all versions
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service all versions
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions all versions
Red Hat Red Hat Enterprise Linux 9 all versions
Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions all versions
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions all versions
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support all versions
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support all versions
squid-cache squid < 7.5

Correcciones de Ubuntu

  • USN-8941-1 Squid vulnerabilities Ubuntu 24.04, 22.04, 20.04, 18.04, 16.04 · 20.10.2026 · squid, squid3

Referencias y parches

Coincidencias CPE (NVD) (1)
  • cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:* < 7.5

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