An out-of-bounds read flaw was found in the way glibc's iconv() function converted certain encoded data to UTF-8. An attacker able to make an application call the iconv() function with a specially crafted argument could use this flaw to crash that application. (CVE-2014-6040 __)
It was found that the wordexp() function would perform command substitution even when the WRDE_NOCMD flag was specified. An attacker able to provide specially crafted input to an application using the wordexp() function, and not sanitizing the input correctly, could potentially use this flaw to execute arbitrary commands with the credentials of the user running that application. (CVE-2014-7817 __)
Run yum update glibc to update your system.
i686: glibc-common-2.17-55.92.amzn1.i686 glibc-devel-2.17-55.92.amzn1.i686 glibc-debuginfo-2.17-55.92.amzn1.i686 glibc-utils-2.17-55.92.amzn1.i686 glibc-debuginfo-common-2.17-55.92.amzn1.i686 nscd-2.17-55.92.amzn1.i686 glibc-static-2.17-55.92.amzn1.i686 glibc-headers-2.17-55.92.amzn1.i686 glibc-2.17-55.92.amzn1.i686 src: glibc-2.17-55.92.amzn1.src x86_64: glibc-2.17-55.92.amzn1.x86_64 glibc-utils-2.17-55.92.amzn1.x86_64 nscd-2.17-55.92.amzn1.x86_64 glibc-headers-2.17-55.92.amzn1.x86_64 glibc-static-2.17-55.92.amzn1.x86_64 glibc-debuginfo-2.17-55.92.amzn1.x86_64 glibc-debuginfo-common-2.17-55.92.amzn1.x86_64 glibc-common-2.17-55.92.amzn1.x86_64 glibc-devel-2.17-55.92.amzn1.x86_64