[RHSA-2021:4292] squid:4 security, bug fix, and enhancement update

Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.

The following packages have been upgraded to a later upstream version: squid (4.15). (BZ#1964384)

Security Fix(es):

• squid: denial of service in URN processing (CVE-2021-28651)

• squid: denial of service issue in Cache Manager (CVE-2021-28652)

• squid: denial of service in HTTP response processing (CVE-2021-28662)

• squid: improper input validation in HTTP Range header (CVE-2021-31806)

• squid: incorrect memory management in HTTP Range header (CVE-2021-31807)

• squid: integer overflow in HTTP Range header (CVE-2021-31808)

• squid: denial of service in HTTP response processing (CVE-2021-33620)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.5 Release Notes linked from the References section.