CVE-2001-1030: Caldera Openlinux Server

High severity, CVSS 7.5. EPSS: 2% chance of exploitation in the next 30 days.

Squid before 2.3STABLE5 in HTTP accelerator mode does not enable access control lists (ACLs) when the httpd_accel_host and http_accel_with_proxy off settings are used, which allows attackers to bypass the ACLs and conduct unauthorized activities such as port scanning.

Affected products

• Caldera Openlinux Server: version 3.1 only
• Immunix Immunix: version 6.2 only; version 7.0 only; version 7.0_beta only
• Mandrakesoft Mandrake Linux: version 7.1 only; version 7.2 only; version 8.0 only
• Mandrakesoft Mandrake Linux Corporate Server: version 1.0.1 only
• Mandrakesoft Mandrake Single Network Firewall: version 7.2 only
• Red Hat Linux: version 7.0 only
• Squid Squid Web Proxy: version 2.3stable3 only; version 2.3stable4 only
• Trustix Secure Linux: version 1.1 only; version 1.01 only; version 1.2 only

Published 2001-07-18. Last modified 2026-06-16.