Recently, many domestic and foreign security companies and agencies issued warnings about the Memcached Distributed Reflection Denial of Service attack, which aroused the concern of all parties. According to our monitoring, the peak traffic for this attack has now reached 1.35T. On Feb. 27, Memcached's reflection DDoS attacks ranged from hundreds of...
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Jackson-databind RCE Vulnerability Handling Guide (CVE-2017-17485)
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)
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
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...
Technical Analysis and Solution of WebLogic Server (WLS) Component Vulnerability
Overview Recently, NSFOCUS has received a slew of reports from customers in the finance, telecom, and Internet sectors on similar security events. Through analysis, NSFOCUS believes that these events are all associated with the malware-infected WebLogic Server (WLS) host. Specifically, attackers exploit the WLS component vulnerability (CVE-2017-10271) to attack the...
Miner Virus Attacked Large Numbers of WebLogic Hosts Recently
On the 15th this month, K.Orange twittered a message, saying that unpatched WebLogic has a vulnerability that could be employed by attackers using a “watch-smartd” program. Recently NSFOCUS received requests from customers in many industries (finance, telecom carriers, the Internet companies and so on) asking for emergence response service as...
