January 2018 – NSFOCUS Threat Intelligence Portal

Jackson-databind RCE Vulnerability Handling Guide (CVE-2017-17485)

On January 25, 2018May 7, 2018 By adeline

At the beginning of 2018, jackson-databind was reported to contain another remote code execution (RCE) vulnerability (CVE-2017-17485) that affects versions 2.9.3 and earlier, 2.7.9.1 and earlier, and 2.8.10 and earlier. This vulnerability is caused by jackson-dababind’s incomplete blacklist. An application that uses jackson-databind will become vulnerable when the enableDefaultTyping method […]

Technical Analysis and Recommended Solution of GoAhead httpd/2.5 to 3.5 LD_PRELOAD Remote Code Execution Vulnerability (CVE-2017-17562)

On January 5, 2018 By adeline

A remote RCE vulnerability (CVE-2017-17562) was found in all GoAhead Web Server’s versions earlier than 3.6.5. The vulnerability is a result of initializing the environment of forked CGI scripts using untrusted HTTP request parameters, and will affect all users who have CGI support enabled with dynamically linked executables (CGI scripts). […]

Traceback of a DDoS Attack

On January 1, 2018 By adeline

An abnormal increase in the CPU usage of a telecom carrier’s 4G firewall substantially slowed down the access from some iPhone users to the Apple website. We suspected that the carrier was hit by a DDoS attack. With the visualized traceback function of NSFOCUS Big Data Security Analytics (BSA), we […]