This update for squid3 fixes the following issues:
Security issues fixed:
CVE-2018-1000024: DoS fix caused by incorrect pointer handling when processing ESI
responses. This affects the default custom esi_parser (bsc#1077003).
CVE-2018-1000027: DoS fix caused by incorrect pointer handing whien processing ESI
responses or downloading intermediate CA certificates (bsc#1077006).