Overview Microsoft disclosed a remote code execution vulnerability (CVE-2020-17144) Microsoft Exchange Server 2010 in its latest December security updates, rating the vulnerability as Important. The vulnerability exists because the program improperly verifies cmdlet parameters. An authenticated attacker could exploit this vulnerability to cause remote code execution. This vulnerability is similar...
Category: Blog
OpenSSL Denial-of-Service Vulnerability (CVE-2020-1971) Threat Alert
Overview On December 8, 2020, local time, OpenSSL released a security advisory disclosing a NULL pointer dereference vulnerability (CVE-2020-1971), rating the vulnerability as High-risk. The vulnerability exists in the GENERAL_NAME_cmp function in OpenSSL. GENERAL_NAME_cmp compares different instances of a GENERAL_NAME to see if they are equal or not. When both...
Struts2 S2-061 Remote Code Execution Vulnerability (CVE-2020-17530) Threat Alert
Overview On December 8, 2020, Struts released a security bulletin disclosing a potential remote code execution vulnerability (CVE-2020-17530) in S2-061. The vulnerability stems from insufficient input validation. This results in two forced Object Graph Navigation Library (OGNL) evaluations when the original user input is calculated. When the OGNL expression is...
Annual IoT Security Report 2019-14
This section analyzes WS-Discovery reflection attacks. For details about the WS-Discovery service, see section 1.6 WS-Discovery First Found to Be Abused for DDoS Reflection Attacks. (more…)
A Global DTLS Amplification DDoS Attack Is Ongoing
Attackers are targeting Citrix ADC (Application Delivery Controller) and utilize it to launch amplification attacks. However, no official patch has been released yet. (more…)
Annual IoT Security Report 2019-13
Introduction This chapter analyzes IoT threats from the perspective of protocols. According to the data from NSFOCUS's threat hunting system, Telnet services (port 23) were targeted most frequently1. Therefore, we first analyze the attacks launched via Telnet. WS-Discovery reflection attacks are a new type of DDoS reflection attacks emerging in...
