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ZDNet Security
JFrog's senior director of security research said the vulnerability has a root cause similar to Log4Shell.
The Register
Last week, version 2.15 of the widely used open-source logging library Log4j was released to tackle a critical security hole, dubbed Log4Shell, which could be trivially abused by miscreants to hijack servers and apps over the internet. In its latest release notes for Log4j 2.x, the Apache Foundation said: "Dealing with CVE-2021-44228 has shown the JNDI has significant security issues. While we have mitigated what we are aware of it would be safer for users to completely disable it by default, especially since the large majority are unlikely to be using it." With JNDI enabled, Log4j could be tricked into fetching Java code from an attacker-controlled server and blindly executing it, compromising the device. Log4j now disables access to JNDI by default. Essentially, if you're using Log4j 2.x versions 2.14 or below, upgrade to 2.16, and if you're already on 2.15, consider 2.16 for peace of mind: the JNDI code is not known to be terribly secure. Britain's National Cyber Security Centre earlier today said it wasn't seeing much obviously malicious web traffic linked to Log4j other than scanning to identify vulnerable systems, though as the day has worn on, infosec folk say attacks are ramping up. Log4j RCE: Emergency patch issued to plug critical auth-free code execution hole in widely used logging utility Log4j doesn't just blow a hole in your servers, it's reopening that can of worms: Is Big Biz exploiting open source? Log4j RCE latest: In case you hadn't noticed, this is Really Very Bad, exploited in the wild, needs urgent patching Timekeeping biz Kronos hit by ransomware and warns customers to engage biz continuity plans.
The Register
Last week, version 2.15 of the widely used open-source logging library Log4j was released to tackle a critical security hole, dubbed Log4Shell, which could be trivially abused by miscreants to hijack servers and apps over the internet. In its latest release notes for Log4j 2.x, the Apache Foundation said: "Dealing with CVE-2021-44228 has shown the JNDI has significant security issues. While we have mitigated what we are aware of it would be safer for users to completely disable it by default, especially since the large majority are unlikely to be using it." With JNDI enabled, Log4j could be tricked into fetching Java code from an attacker-controlled server and blindly executing it, compromising the device. Log4j now disables access to JNDI by default. Essentially, if you're using Log4j 2.x versions 2.14 or below, upgrade to 2.16, and if you're already on 2.15, consider 2.16 for peace of mind: the JNDI code is not known to be terribly secure. Britain's National Cyber Security Centre earlier today said it wasn't seeing much obviously malicious web traffic linked to Log4j other than scanning to identify vulnerable systems, though as the day has worn on, infosec folk say attacks are ramping up. Log4j RCE: Emergency patch issued to plug critical auth-free code execution hole in widely used logging utility Log4j doesn't just blow a hole in your servers, it's reopening that can of worms: Is Big Biz exploiting open source? Log4j RCE latest: In case you hadn't noticed, this is Really Very Bad, exploited in the wild, needs urgent patching Timekeeping biz Kronos hit by ransomware and warns customers to engage biz continuity plans.
The Register
Last week, version 2.15 of the widely used open-source logging library Log4j was released to tackle a critical security hole, dubbed Log4Shell, which could be trivially abused by miscreants to hijack servers and apps over the internet. In its latest release notes for Log4j 2.x, the Apache Foundation said: "Dealing with CVE-2021-44228 has shown the JNDI has significant security issues. While we have mitigated what we are aware of it would be safer for users to completely disable it by default, especially since the large majority are unlikely to be using it." With JNDI enabled, Log4j could be tricked into fetching Java code from an attacker-controlled server and blindly executing it, compromising the device. Log4j now disables access to JNDI by default. Essentially, if you're using Log4j 2.x versions 2.14 or below, upgrade to 2.16, and if you're already on 2.15, consider 2.16 for peace of mind: the JNDI code is not known to be terribly secure. Britain's National Cyber Security Centre earlier today said it wasn't seeing much obviously malicious web traffic linked to Log4j other than scanning to identify vulnerable systems, though as the day has worn on, infosec folk say attacks are ramping up. Log4j RCE: Emergency patch issued to plug critical auth-free code execution hole in widely used logging utility Log4j doesn't just blow a hole in your servers, it's reopening that can of worms: Is Big Biz exploiting open source? Log4j RCE latest: In case you hadn't noticed, this is Really Very Bad, exploited in the wild, needs urgent patching Timekeeping biz Kronos hit by ransomware and warns customers to engage biz continuity plans.
The Register
Last week, version 2.15 of the widely used open-source logging library Log4j was released to tackle a critical security hole, dubbed Log4Shell, which could be trivially abused by miscreants to hijack servers and apps over the internet. In its latest release notes for Log4j 2.x, the Apache Foundation said: "Dealing with CVE-2021-44228 has shown the JNDI has significant security issues. While we have mitigated what we are aware of it would be safer for users to completely disable it by default, especially since the large majority are unlikely to be using it." With JNDI enabled, Log4j could be tricked into fetching Java code from an attacker-controlled server and blindly executing it, compromising the device. Log4j now disables access to JNDI by default. Essentially, if you're using Log4j 2.x versions 2.14 or below, upgrade to 2.16, and if you're already on 2.15, consider 2.16 for peace of mind: the JNDI code is not known to be terribly secure. Britain's National Cyber Security Centre earlier today said it wasn't seeing much obviously malicious web traffic linked to Log4j other than scanning to identify vulnerable systems, though as the day has worn on, infosec folk say attacks are ramping up. Log4j RCE: Emergency patch issued to plug critical auth-free code execution hole in widely used logging utility Log4j doesn't just blow a hole in your servers, it's reopening that can of worms: Is Big Biz exploiting open source? Log4j RCE latest: In case you hadn't noticed, this is Really Very Bad, exploited in the wild, needs urgent patching Timekeeping biz Kronos hit by ransomware and warns customers to engage biz continuity plans.
Check Point Research
What is Log4Shell (CVE-2021-44228)? A Remote Code Execution vulnerability in log4j2, a popular logging framework used in Java applications. What does this mean in practice? It means you can compromise a machine by sending it the string ${ jndi:ldap://path/to/code}, as long as you can get the string logged by a Java application that uses a... Click to Read More The post The Laconic Log4Shell FAQ appeared first on Check Point Research.