Cyber risk and advisory programs that identify security gaps and build strategies to address them.
MDR that provides improved detection, 24/7 threat hunting, end-to-end coverage and most of all, complete Response.
Our team delivers the fastest response time in the industry. Threat suppression within just 4 hours of being engaged.
Be protected by the best from Day 1.
24/7 Threat Investigation and Response.
Expert hunting, research and content.
Defend brute force attacks, active intrusions and unauthorized scans.
Protect assets from ransomware, trojans, rootkits and more.
Intelligence and visibility across AWS, O365, DevOps and more.
Configuration escalations, policy and posture management.
Detects malicious insider behavior leveraging Machine Learning models.
Join eSentire and Telarus for a day of golfing.
eSentire will be participating in the Pac NorthWest Virtual Roundtable…
eSentire will be participating in the Mid-Market Enterprise Summit.
On May 16th, 2021, a security researcher released Proof-of-Concept (PoC) exploit code for the Windows IIS server vulnerability CVE-2021-31166 (CVSS: 9.8). With this release, eSentire assesses widespread exploitation of this vulnerability is imminent.
CVE-2021-31166 was publicly announced on May 11th, 2021. Exploitation may allow for either Denial of Service (DoS) or Remote Code Execution (RCE). The currently available PoC exploit code demonstrates a DoS attack. Organizations are strongly recommended to apply security patches for this vulnerability as exploitation is expected.
What we’re doing about it
What you should do about it
CVE-2021-31166 is especially concerning as it is considered to be a wormable vulnerability. Wormable vulnerabilities can be abused to allow for automatic spread between vulnerable systems.
In an attack scenario, a threat actor could exploit this vulnerability by sending a specially crafted packet to a targeted server utilizing the HTTP Protocol Stack (http.sys) to process packets. Exploitation is considered simple, increasing the likelihood of exploitation in the immediate future.
eSentire produced an advisory on May 11th, with information on CVE-2021-31166 and other high severity vulnerabilities from Microsoft’s May Patch Tuesday release.