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What has the Log4shell vulnerability taught us about application security?

Dec 16, 2021 By Snyk In Snyk
A week ago, we had no idea what Log4shell was. Today, we have the global developer community coming together to keep itself safe from a vulnerability that ranks the highest in terms of risk. We need technical solutions, but what does it mean for the landscape of application security, and what have we learned from this situation?
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Exploiting and Mitigating CVE-2021-44228: Log4j Remote Code Execution (RCE)

Dec 16, 2021 By Sysdig In Sysdig
A new critical vulnerability has been found in log4j, a widely-used open-source utility used to generate logs inside java applications. The vulnerability CVE-2021-44228, also known as Log4Shell, permits a Remote Code Execution (RCE) allowing the attackers to execute arbitrary code on the host. The log4j utility is popular and used by a huge number of applications and companies, including the famous game Minecraft. It is also used in various Apache frameworks like Struts2, Kafka, Druid, Flink, and many commercial products.
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Understanding the Log4j Log4Shell Vulnerability

Dec 16, 2021 By Arctic Wolf In Arctic Wolf
A zero-day threat is creating waves through the cybersecurity industry more than any other in years. On Thursday, December 9, security researchers published a proof-of-concept exploit code for CVE-2021-44228, a remote code execution vulnerability in Log4j, a Java logging library used in a significant number of internet applications. In the week since its discovery businesses worldwide are frantically trying to identify and mitigate the exploit, while security pros and experts are desperately attempting to release patches and guide organizations as new information becomes known.
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mend

Log4j Vulnerability CVE-2021-45046 Explained

Dec 16, 2021 By Hagai Wechsler In Mend

As security and development teams rushed to assess the now-notorious Log4Shell vulnerability published December 10 (CVE-2021-44228), another, more minor vulnerability was discovered in Log4j — CVE-2021-45046. To understand the newly-discovered vulnerability, it is important to get the full picture and background on the original Log4j issue.

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Log4Shell: What You Need to Know About the Log4j Vulnerability (APJ)

Dec 16, 2021 By Snyk In Snyk
A new critical vulnerability, Log4Shell, was publicly disclosed on December 10th and is making global headlines. It impacts a wide amount of applications on the internet, allowing attackers to remotely execute code within vulnerable applications worldwide. In this webinar recording, Snyk technical experts provide an in-depth technical review of the Log4Shell vulnerability, what caused it, how it can be exploited, and most importantly, how it can be mitigated through upgrades, or defended against in WAF configurations and more.
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Trustwave

Trustwave's Action Response: Multiple Log4j Zero-Day Vulnerabilities

Dec 16, 2021 By Trustwave In Trustwave

Dec. 29: Updated to cover three additional CVEs: CVE-2021-4104, CVE-2021-44832, and CVE-2021-42550 (in logback as opposed to log4j). Dec. 22: A joint Cybersecurity Advisory was issued by multiple national cybersecurity agencies providing mitigation guidance on addressing vulnerabilities in Apache’s Log4j software library: CVE-2021-44228 (known as “Log4Shell”), CVE-2021-45046, and CVE-2021-45105. Dec. 17: Please note the emergency directive from CISA on Log4j.

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Trustwave

Trustwave's Action Response: Multiple Log4j Zero-Day Vulnerabilities

Dec 16, 2021 By Trustwave In Trustwave

Dec. 29: Updated to cover three additional CVEs: CVE-2021-4104, CVE-2021-44832, and CVE-2021-42550 (in logback as opposed to log4j). Dec. 22: A joint Cybersecurity Advisory was issued by multiple national cybersecurity agencies providing mitigation guidance on addressing vulnerabilities in Apache’s Log4j software library: CVE-2021-44228 (known as “Log4Shell”), CVE-2021-45046, and CVE-2021-45105. Dec. 17: Please note the emergency directive from CISA on Log4j.

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sumologic

Infrastructure is a disaster. The lessons from Log4J.

Dec 16, 2021 By George Gerchow In Sumo Logic
New day. New threat. New technology to combat said threat. Sound familiar? The threat landscape is continually evolving and getting more sophisticated, and, in an attempt to keep up, many organizations are quick to adopt the latest buzz-worthy product. This is a recipe for disaster.
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netskope

Khonsari: New Ransomware Delivered Through Log4Shell

Dec 16, 2021 By Gustavo Palazolo In Netskope

While many organizations are patching the two recent Apache Log4j vulnerabilities (CVE-2021-44228 and CVE-2021-45046), attackers have been racing to exploit them to deliver malware, such as botnets, backdoors, and cryptominers. Among the threats delivered using Log4Shell exploits, a new ransomware family was found by Bitdefender: Khonsari.

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