【预警通告】OpenSSH信息泄露漏洞(CVE-2018-15473、CVE-2018-15919)
前段时间，OpenSSH被曝出存在两个信息泄露漏洞（CVE-2018-15473和CVE-2018-15919）。其中CVE-2018-15919影响自2011年9月6日发布的5.9版本到今年8月24日发布的最新版本7.8。CVE-2018-15473则影响自1999年以来至今年7.7版本中所有版本，远程攻击者可利用漏洞猜测在OpenSSH服务器上注册的用户名。
OpenSSH Remote Denial-of-Service Vulnerability Technical Analysis and Solution
OpenSSH contains a memory exhaustion issue during key exchange. An unauthenticated client can increase the memory allocated to each connection on the server to 384 MB, by repeating the KEXINIT process. An attacker can exploit this vulnerability by initiating multiple connections, to exhaust memory resources of the server and therefore lead to a denial of service.