Dec 19

Log4J 2.17.0 is published

Apache Log4j2 versions 2.0-alpha1 through 2.16.0 did not protect from uncontrolled recursion from self-referential lookups. When the logging configuration uses a non-default Pattern Layout with a Context Lookup (for example, $${ctx:loginId}), attackers with control over Thread Context Map (MDC) input data can craft malicious input data that contains a recursive lookup, resulting in a StackOverflowError that will terminate the process. This is also known as a DOS (Denial of Service) attack. Log4J 2.17.0 fixes CVE-2021-45105.

 

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Dec 14

Veeam is not affected by Log4J vulnerability

Apache isn’t used by any Veeam product, however, the Veeam security team realized an investigation. Veeam products are not affected by this vulnerability (KB 4254). Basically, Apache Logs4J is not in use by any Veeam products. I’ll cross-post any important updates but you can see the thread yourself here.

Veeam Availability Suite 11

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Dec 13

Log4J Recommendations – Step by Step Guide

If you’re using any software running on Apache and Java, be aware of this critical zero-day vulnerability. Log4j is a ubiquitous logging tool included in almost every Java application, meaning this vulnerability affects literally millions of servers. The Log4J library vulnerability (CVE-2021-44228) allows an attacker to cause the target system to fetch and execute code from a remote location controlled by the attacker. The second stage, what the downloaded malicious code does next, is fully up to the attacker. This library is used by many software vendors and service providers globally as a standardized way of handling log messages within the software. This blog post is a step-by-step guide (recommendations) that you can follow.

 

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Nov 02

Defending Against Crypto-Ransomware with Netwrix

Hi, today we will discuss about data governance and more especially a software called: Netwrix Auditor.

Netwrix Auditor is a visibility and governance platform that enables control over changes, configurations, and access in hybrid cloud IT environments to protect unstructured data regardless of its location. The platform provides security analytics to detect anomalies in user behavior and investigate threat patterns before a data breach occurs.

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Oct 19

Conti initiates their attacks on Backup

Cyber groups (cartels) specifically target backup solutions in order to ensure that the victim has no other option except for paying the ransom. Conti group is particularly methodical in developing and implementing backup removal techniques (on-premise and cloud). The full analysis is available here (thanks to ADV INTEL) and is based on their actual proactive victim breach intelligence and subsequent incident response (not a simulated or sandbox environment). Defense-in-depth strategy is the solution and concerns your backup environment…

 

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