CVE-2021-28652

Red Hat statement

This issue has been rated as having a security impact of Moderate. At this stage in their life, Red Hat Enterprise Linux 6 and 7 only accept Important and Critical Security Advisories (RHSAs) and this flaw does not meet these criteria. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata. Red Hat Satellite does not ship the Squid package, however, does consume it from RHEL 7 repository. Product is not affected by this flaw as squid.conf configuration disables all the http_access fragments except the localhost.

Red Hat mitigation

To mitigate this flaw Cache Manager access privileges can be hardened, for example by requiring authentication or other access controls in the "http_access" directive beyond the default IP address restriction. Alternatively, Cache Manager access can be disabled entirely if not needed. To do so, place the following line in `squid.conf` before lines containing "allow" : ``` http_access deny manager ```