Linux Kernel Local Privilege Escalation Vulnerability Technical Analysis and Solution

The memory subsystem of the Linux kernel contains a race condition in the way of handling the copy-on-write (COW) breakage of private read-only memory mappings. An unprivileged local user could exploit this vulnerability to gain write access to otherwise read-only memory mappings, thus escalating his or her privileges on the system.

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.

ISC BIND 9 Denial-of-Service Technical Analysis and Solution

Internet Systems Consortium (ISC) officially released a security advisory to announce a vulnerability (CVE-2016-2776) and its fixing. The vulnerability exists in buffer.c. When constructing a response packet for a specially crafted query request, BIND will encounter an assertion failure, causing the program to crash and therefore a denial of service.