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.
Visibility and response across your entire Microsoft security ecosystem.
XDR with Machine Learning that eliminates noise, enables real-time detection and response, and automatically blocks threats.
Be protected by the best from Day 1.
24/7 Threat Investigation and Response.
Expert threat hunting, original research, and proactive threat intelligence.
TRU is foundational to our MDR service. No add-ons or additional costs required.
Stop ransomware attacks before they disrupt your business.
Detect and respond to zero-day exploits.
Protect against third-party and supply chain risk.
Adopt a risk-based approach to cybersecurity.
Protect your most sensitive data.
Meet cybersecurity regulatory compliance mandates.
Eliminate misconfigurations and policy violations.
Prevent business disruption by outsourcing MDR.
Meet insurability requirements with MDR.
Defend brute force attacks, active intrusions and unauthorized scans.
Safeguard endpoints 24/7 by isolating and mediating threats to prevent lateral spread.
Enhance investigation and threat detection across multi-cloud or hybrid environments.
Remediate critical misconfigurations, security vulnerabilities and policy violations across cloud and containerized environments.
Detect malicious insider and identity-based behavior leveraging machine learning models.
Our Threat Response Unit (TRU) publishes security advisories, blogs, reports, industry publications and webinars based on its original research and the insights driven through proactive threat hunts.
eSentire is The Authority in Managed Detection and Response Services, protecting the critical data and applications of 2000+ organizations in 80+ countries from known and unknown cyber threats. Founded in 2001, the company's mission is to hunt, investigate and stop cyber threats before they become business disrupting events.
We provide sophisticated cybersecurity solutions for Managed Security Service Providers (MSSPs), Managed Service Providers (MSPs), and Value-Added Resellers (VARs). Find out why you should partner with eSentire, the Authority in Managed Detection and Response, today.
We believe a multi-signal approach is paramount to protecting your complete attack surface. See why eSentire MDR means multi-signal telemetry and complete response.
See how our 24/7 SOC Cyber Analysts and Elite Threat Hunters stop even the most advanced cyberattacks before they disrupt your business.
Choose the right mix of Managed Detection and Response, Exposure Management, and Incident Response services to strengthen your cyber resilience.
Try our interactive tools including the MITRE ATT&CK Tool, the SOC Pricing Calculator, the Cybersecurity Maturity Assessment, and our MDR ROI Calculator.
Read the latest security advisories, blogs, reports, industry publications and webinars published by eSentire's Threat Response Unit (TRU).
See why 2000+ organizations count on eSentire to build resilience and prevent business disruption.
On November 1st, 2022, OpenSSL disclosed two high severity vulnerabilities impacting OpenSSL versions above 3.0.0 and below the patched version of 3.0.7, as well as applications with an affected OpenSSL library embedded. The notable vulnerability is tracked as CVE-2022-3602: a Buffer Overflow vulnerability. A threat actor may exploit CVE-2022-3602 to cause Denial-of-Service (DoS) or Remote Code Execution (RCE). In an attack scenario, this vulnerability is most likely to be exploited in email-based attacks, although remote attacks are possible in certain configurations. Currently, there is no indication of real-world attacks or publicly available Proof-of-Concept (PoC) exploit code.
All systems using vulnerable versions (3.0.0 -> 3.0.6) should apply the patch as soon as possible. Due to the scope of OpenSSL use, the vulnerability impacts many products and vendors will be required to release updates. The eSentire Threat Intelligence team assesses with medium confidence that threat actors will exploit this vulnerability in the future.
OpenSSL is a library used for cryptographic purposes, especially in network connections. For example, web servers often use OpenSSL to establish encrypted HTTPS connections. In addition, mail servers and VPN protocols such as OpenVPN also use OpenSSL to establish encrypted communication channels. The library can be found in many products, including network devices, embedded systems, and container images.
The pre-announcements of CVE-2022-3602 described this issue as CRITICAL. Further analysis has led this to be downgraded to HIGH as it cannot be exploited in most widely used architectures and platforms. Exploitation would require a vulnerable TLS client to connect to a malicious server. Further, the bugs were introduced as part of Punycode decoding functionality, which is currently only used for processing email address name constraints in X.509 certificates. However, any OpenSSL 3.0 application that verifies X.509 certificates received from untrusted sources, should be considered vulnerable. This includes TLS clients and TLS servers configured to use TLS client authentication.
Docker has stated publicly that approximately 1000 images are impacted and will be mitigated shortly – please follow Docker guidance here.
The second vulnerability addressed by OpenSSL on November 1st, 2022, is CVE-2022-3786. This is a buffer overflow vulnerability that may result in Denial-of-Service. OpenSSL 3.0.7 addresses both CVE-2022-3786 and CVE-2022-3602.
Known Impacted Products: (Note: This list is not exhaustive)
NCSC is maintaining a list of impacted and unaffected software. The page continues to be updated at the time of writing.
[1] https://www.openssl.org/news/secadv/20221101.txt
[2] https://mta.openssl.org/pipermail/openssl-announce/2022-November/000241.html
[3] https://mta.openssl.org/pipermail/openssl-announce/2022-October/000238.html
[4] https://www.openssl.org/blog/blog/2022/11/01/email-address-overflows/
[5] https://github.com/NCSC-NL/OpenSSL-2022
[5] https://www.docker.com/blog/security-advisory-critical-openssl-vulnerability/