Amazon Linux 2 Security Advisory: ALAS-2018-1020
Advisory Release Date: 2018-05-29 23:17 Pacific
nghttp2 version >= 1.10.0 and nghttp2 <= v1.31.0 contains an Improper Input Validation CWE-20 vulnerability in ALTSVC frame handling that can result in segmentation fault leading to denial of service. This attack appears to be exploitable via network client. This vulnerability appears to have been fixed in >= 1.31.1. (CVE-2018-1000168 )
Run yum update nghttp2 to update your system.