Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects. Security Fix: * squid: improper check for new member in ESIExpression::Evaluate allows for stack buffer overflow * squid: improper access restriction upon Digest Authentication nonce replay could lead to remote code execution * squid: parsing of header Proxy-Authentication leads to memory corruption For more details about the security issue, including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page listed in the References section.