Microsoft’s December 2020 Patches Fix 58 Security Vulnerabilities Threat Alert
December 23, 2020
Overview
Microsoft released December 2020 security updates on Tuesday which fix 58 vulnerabilities ranging from simple spoofing attacks to remote code execution, including 9 critical vulnerabilities, 47 important vulnerabilities, and two moderate vulnerabilities. All users are advised to install updates without delay.
(more…)Annual IoT Security Report 2019-11
December 22, 2020
In this section, we analyze two vulnerabilities, namely, the CVE-2016-10372 vulnerability32 in the Eir D1000 router and the backdoor vulnerability in Netis routers. Except UPnP-related vulnerabilities described in section 4.4.3 Malicious Behaviors Targeting UPnP Vulnerabilities, the CVE-2016-10372
vulnerability was exploited most frequently. The backdoor vulnerability in Netis routers exerted a severe impact when it was initially disclosed.
Pay or Die!
December 21, 2020
“Pay or Die” is an opening phrase often used by DDoS blackmailers. Github was attacked, NZX was unable to provide services for 4 days… these are all serious DDoS blackmail incidents this year. This is just the tip of the iceberg of such lucrative crimes. In various forms of digital black mailings, using “distributed denial of service attacks” (DDoS) to attack target companies has become attackers’ first choice.
(more…)Introduction of common attack types in manufacturing industry
December 18, 2020
Abstract
The real economy with manufacturing as the core industry is the basis for maintaining national competitiveness and healthy economic development. Based on the universal recognition of this concept, the Industry 4.0 strategy of Germany, the national advanced manufacturing strategy of the United States, and the national manufacturing policy of India, have taken place as national strategic plans.
(more…)Citrix SD-WAN Vulnerabilities Threat Alert
December 16, 2020
Overview
Recently, Citrix SD-WAN released a security update to address three vulnerabilities (CVE-2020-8271, CVE-2020-8272, CVE-2020-8273). These vulnerabilities allow an unauthenticated attacker with network access to SD-WAN Center to perform arbitrary code execution as root.
At present, there exist detailed analysis of relevant vulnerabilities and the proof of concept (POC) concerning CVE-2020-8271.
(more…)Annual IoT Security Report 2019-10
December 15, 2020
IoT Exploits
Viewpoint 3: Over 30 types of IoT exploits were captured, most of which targeted remote command execution vulnerabilities. Though hundreds of to thousands of IoT vulnerabilities were unveiled each year, only a few can exert an extensive impact. Attackers were keen on targeting devices (routers and video surveillance devices) exposed in large quantities, so as to broaden their influence.
Based on the logs generated by NSFOCUS’s threat hunting system from May 6 to November 6, 2019, we made an analysis of global IoT exploits.
Over 30 types of IoT exploits were captured, most of which targeted remote command execution vulnerabilities. Obviously, from the perspective of global IoT threats, though hundreds of to thousands of IoT vulnerabilities were unveiled each year, only a few can exert an extensive impact. We counted all logs generated one day for the same source IP address as one attack event. Upon deduplication of attack IP addresses, we got top 10 most frequently exploited IoT vulnerabilities listed in descending order of the number of exploitations in Table 3-1. It can be seen that attackers’ exploits mainly targeted routers and video surveillance devices, which fits in with the fact that routers and video surveillance devices were major IoT devices exposed on the Internet. Evidently, attackers hit devices exposed in large quantity to expand the scope of impact. The PoC of most of these vulnerabilities can be found in the Exploit-DB and those beyond this database existed in GitHub. These publicly available PoCs have substantially reduced attackers’ cost of crafting attack payloads.
(more…)Multiple Cisco Vulnerabilities Threat Alert-1
December 14, 2020
Overview
On November 18, 2020 (local time), Cisco released security advisories fixing vulnerabilities in multiple products. These vulnerabilities include three high-risk ones: CVE-2020-3531, CVE-2020-3586, and CVE-2020-3470.
Reference link:
Drupal Remote Code Execution Vulnerability (CVE-2020-13671) Threat Alert
December 11, 2020
Overview
On November 19, 2020 (Beijing time), Drupal released a security advisory that fixes a remote code execution vulnerability (CVE-2020-13671). Drupal core does not properly sanitize certain filenames on uploaded files, which can lead to files being interpreted as the incorrect extension and served as the wrong MIME type or executed as PHP for certain hosting configurations.
(more…)XStream Remote Code Execution Vulnerability (CVE-2020-26217) Threat Alert
December 9, 2020
Overview
Recently, XStream released a security advisory that fixes a remote code execution vulnerability (CVE-2020-26217). The vulnerability may allow a remote attacker to execute arbitrary code by sending crafted requests to the web application that uses XStream and thereby taking control of the target server. XStream is a commonly used tool for converting between Java objects and XML.
The vulnerability is a variation of CVE-2013-7285. This time, it uses a different set of classes to bypass blacklist restriction in the deserialization process, thus leading to remote code execution.
(more…)Annual IoT Security Report 2019-9
December 8, 2020
Introduction
This chapter analyzes IoT threats from the perspective of vulnerabilities. We first analyze the change trends of IoT vulnerabilities and exploits 1 in the NVD and Exploit Database (Exploit-DB) in 2019 and then IoT exploits captured by NSFOCUS’s threat hunting system. The following dwells upon some representative exploits.
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