SUSE: 2020:4503-1 Critical: libpng Security Flaw and Memory Leak

This update for glibc fixes the following security issues: - CVE-2017-15670: Prevent off-by-one error that lead to a heap-based buffer overflow in the glob function, related to the processing of home directories using the ~ operator followed by a long string (bsc#1064583) - CVE-2017-15804: The glob function contained a buffer overflow during unescaping of user names with the ~ operator (bsc#1064580) - CVE-2015-5180: res_query in libresolv allowed remote attackers to cause a denial of service (NULL pointer dereference and process crash) (bsc#941234). This non-security issue was fixed: - Fix inaccuracies in casin, cacos, casinh, cacosh (bsc#1058774) Patch Instructions: To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".