Apache Log4j | Breaking Cybersecurity News | The Hacker News

Bitcoin wallets created between 2011 and 2015 are susceptible to a new kind of exploit called  Randstorm  that makes it possible to recover passwords and gain unauthorized access to a multitude of wallets spanning several blockchain platforms. "Randstorm() is a term we coined to describe a collection of bugs, design decisions, and API changes that, when brought in contact with each other, combine to dramatically reduce the quality of random numbers produced by web browsers of a certain era (2011-2015)," Unciphered  disclosed  in a report published last week. It's estimated that approximately 1.4 million bitcoins are parked in wallets that were generated with potentially weak cryptographic keys. Customers can check whether their wallets are vulnerable at www.keybleed[.]com. The cryptocurrency recovery company said it re-discovered the problem in January 2022 while it was  working for an unnamed customer  who had been locked out of its Blockchain.co...

A "potentially destructive actor" aligned with the government of Iran is actively exploiting the well-known  Log4j vulnerability  to infect unpatched VMware Horizon servers with ransomware. Cybersecurity firm SentinelOne dubbed the group " TunnelVision " owing to their heavy reliance on tunneling tools, with overlaps in tactics observed to that of a broader group tracked under the moniker  Phosphorus  as well as Charming Kitten and Nemesis Kitten. "TunnelVision activities are characterized by wide-exploitation of 1-day vulnerabilities in target regions," SentinelOne researchers Amitai Ben Shushan Ehrlich and Yair Rigevsky  said  in a report, with the intrusions detected in the Middle East and the U.S. Also observed alongside Log4Shell is the exploitation of Fortinet FortiOS path traversal flaw ( CVE-2018-13379 ) and the Microsoft Exchange  ProxyShell  vulnerability to gain initial access into the target networks for post-exploitation. "Tunne...

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Microsoft is warning of continuing attempts by nation-state adversaries and commodity attackers to take advantage of  security vulnerabilities  uncovered in the Log4j open-source logging framework to deploy malware on vulnerable systems. "Exploitation attempts and testing have remained high during the last weeks of December," Microsoft Threat Intelligence Center (MSTIC)  said  in revised guidance published earlier this week. "We have observed many existing attackers adding exploits of these vulnerabilities in their existing malware kits and tactics, from coin miners to hands-on-keyboard attacks." Publicly disclosed by the Apache Software Foundation on December 10, 2021, the remote code execution (RCE) vulnerability in Apache Log4j 2, aka  Log4Shell , has emerged as a new attack vector for  widespread exploitation  by a variety of threat actors. In the subsequent weeks, four more weaknesses in the utility have come to light —  CVE-2021-45046 ,...

The issues with Log4j continued to stack up as the Apache Software Foundation (ASF) on Friday rolled out yet another patch — version 2.17.0 — for the widely used logging library that could be exploited by malicious actors to stage a denial-of-service (DoS) attack. Tracked as  CVE-2021-45105  (CVSS score: 7.5), the new vulnerability affects all versions of the tool from 2.0-beta9 to 2.16.0, which the open-source nonprofit shipped earlier this week to remediate a second flaw that could result in remote code execution ( CVE-2021-45046 ), which, in turn, stemmed from an "incomplete" fix for  CVE-2021-44228 , otherwise called the Log4Shell vulnerability. "Apache Log4j2 versions 2.0-alpha1 through 2.16.0 did not protect from uncontrolled recursion from self-referential lookups," the ASF  explained  in a revised advisory. "When the logging configuration uses a non-default Pattern Layout with a Context Lookup (for example, $${ctx:loginId}), attackers with control o...

The Apache Software Foundation has released fixes to contain an  actively   exploited  zero-day vulnerability affecting the widely-used Apache Log4j Java-based logging library that could be weaponized to execute malicious code and allow a complete takeover of vulnerable systems. Tracked as  CVE-2021-44228  and by the monikers Log4Shell or LogJam, the issue concerns a case of unauthenticated, remote code execution (RCE) on any application that uses the open-source utility and affects versions Log4j 2.0-beta9 up to 2.14.1. The bug has scored a perfect 10 on 10 in the CVSS rating system, indicative of the severity of the issue. "An attacker who can control log messages or log message parameters can execute arbitrary code loaded from  LDAP  servers when message lookup substitution is enabled," the Apache Foundation  said  in an advisory. "From Log4j 2.15.0, this behavior has been disabled by default." Exploitation can be achieved by a single...