Search results for CVSS score for CVE-2021-44228 | Breaking Cybersecurity News | The Hacker News

Cybersecurity researchers have discovered an entirely new attack vector that enables adversaries to exploit the Log4Shell vulnerability on servers locally by using a JavaScript WebSocket connection. "This newly-discovered attack vector means that anyone with a vulnerable Log4j version on their machine or local private network can browse a website and potentially trigger the vulnerability," Matthew Warner, CTO of Blumira,  said . "At this point, there is no proof of active exploitation. This vector significantly expands the attack surface and can impact services even running as localhost which were not exposed to any network." WebSockets  allow for two-way communications between a web browser (or other client application) and a server, unlike HTTP, which is unidirectional where the client sends the request and the server sends the response. While the issue can be resolved by updating all local development and internet-facing environments to Log4j 2.16.0, Apache o...

The Apache Software Foundation (ASF) on Tuesday rolled out fresh patches to contain an arbitrary code execution flaw in Log4j that could be abused by threat actors to run malicious code on affected systems, making it the fifth security shortcoming to be discovered in the tool in the span of a month. Tracked as  CVE-2021-44832 , the vulnerability is rated 6.6 in severity on a scale of 10 and impacts all versions of the logging library from 2.0-alpha7 to 2.17.0 with the exception of 2.3.2 and 2.12.4. While Log4j versions 1.x are not affected, users are recommended to upgrade to Log4j 2.3.2 (for Java 6), 2.12.4 (for Java 7), or 2.17.1 (for Java 8 and later). "Apache Log4j2 versions 2.0-beta7 through 2.17.0 (excluding security fix releases 2.3.2 and 2.12.4) are vulnerable to a remote code execution (RCE) attack where an attacker with permission to modify the logging configuration file can construct a malicious configuration using a JDBC Appender with a data source referencing a JND...

Cybersecurity agencies from Australia, Canada, New Zealand, the U.K., and the U.S. on Wednesday released a joint advisory in response to widespread exploitation of multiple vulnerabilities in Apache's Log4j software library by nefarious adversaries. "These vulnerabilities, especially Log4Shell, are severe," the intelligence agencies said in the  new   guidance . "Sophisticated cyber threat actors are actively scanning networks to potentially exploit  Log4Shell ,  CVE-2021-45046 , and  CVE-2021-45105  in vulnerable systems. These vulnerabilities are likely to be exploited over an extended period." An attacker can exploit Log4Shell (CVE-2021-44228) by submitting a specially crafted request to a vulnerable system that causes that system to execute arbitrary code. CVE-2021-45046, on the other hand, allows for remote code execution in certain non-default configurations, while CVE-2021-45105 could be leveraged by a remote attacker to cause a denial-of-service...

UPDATE — The severity score of CVE-2021-45046, originally classified as a DoS bug, has since been revised from 3.7 to 9.0, to reflect the fact that an attacker could abuse the vulnerability to send a specially crafted string that leads to "information leak and remote code execution in some environments and local code execution in all environments." The Apache Software Foundation (ASF) has pushed out a new fix for the Log4j logging utility after the previous patch for the recently disclosed  Log4Shell  exploit was deemed as "incomplete in certain non-default configurations." The second vulnerability — tracked as  CVE-2021-45046  — is rated 3.7 out of a maximum of 10 on the CVSS rating system and affects all versions of Log4j from 2.0-beta9 through 2.12.1 and 2.13.0 through 2.15.0, which the project maintainers shipped last week to address a critical remote code execution vulnerability (CVE-2021-44228) that could be abused to infiltrate and take over systems. ...

Muhstik, a botnet infamous for propagating via web application exploits, has been observed targeting Redis servers using a recently disclosed vulnerability in the database system. The vulnerability relates to  CVE-2022-0543 , a  Lua sandbox escape flaw  in the open-source, in-memory, key-value data store that could be abused to achieve remote code execution on the underlying machine. The vulnerability is rated 10 out of 10 for severity. "Due to a packaging issue, a remote attacker with the ability to execute arbitrary Lua scripts could possibly escape the Lua sandbox and execute arbitrary code on the host," Ubuntu noted in an advisory released last month. According to  telemetry data  gathered by Juniper Threat Labs, the attacks leveraging the new flaw are said to have commenced on March 11, 2022, leading to the retrieval of a malicious shell script ("russia.sh") from a remote server, which is then utilized to fetch and execute the botnet binaries from anoth...

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 U.S. Cybersecurity and Infrastructure Security Agency (CISA) has  added  three flaws to the Known Exploited Vulnerabilities (KEV) catalog, based on evidence of active exploitation. The security vulnerabilities are as follows - CVE-2023-1389  (CVSS score: 8.8) - TP-Link Archer AX-21 Command Injection Vulnerability CVE-2021-45046  (CVSS score: 9.0) - Apache Log4j2 Deserialization of Untrusted Data Vulnerability CVE-2023-21839  (CVSS score: 7.5) - Oracle WebLogic Server Unspecified Vulnerability CVE-2023-1389 concerns a case of command injection affecting TP-Link Archer AX-21 routers that could be exploited to achieve remote code execution. According to Trend Micro's Zero Day Initiative, the flaw has been  put to use  by threat actors associated with the Mirai botnet since April 11, 2023. The second flaw to be added to the KEV catalog is CVE-2021-45046, a remote code execution affecting the Apache Log4j2 logging library that  came to li...

Cybersecurity researchers have  developed  a proof-of-concept (PoC) code that exploits a  recently disclosed critical flaw  in the Apache OfBiz open-source Enterprise Resource Planning (ERP) system to execute a memory-resident payload. The vulnerability in question is  CVE-2023-51467  (CVSS score: 9.8), a bypass for another severe shortcoming in the same software ( CVE-2023-49070 , CVSS score: 9.8) that could be weaponized to circumvent authentication and remotely execute arbitrary code. While it was fixed in  Apache OFbiz version 18.12.11  released last month, threat actors have been observed attempting to exploit the flaw, targeting vulnerable instances. The latest findings from VulnCheck show that CVE-2023-51467 can be exploited to execute a payload directly from memory, leaving little to no traces of malicious activity. Security flaws disclosed in Apache OFBiz (e.g.,  CVE-2020-9496 ) have been  exploited  by threat actors ...

The notorious North Korea-linked threat actor known as the  Lazarus Group  has been attributed to a new global campaign that involves the opportunistic exploitation of security flaws in Log4j to deploy previously undocumented remote access trojans (RATs) on compromised hosts. Cisco Talos is tracking the activity under the name Operation Blacksmith, noting the use of three DLang-based malware families, including a RAT called NineRAT that leverages Telegram for command-and-control (C2), DLRAT, and a downloader dubbed BottomLoader. The cybersecurity firm described the latest tactics of the adversary as a definitive shift and that they overlap with the cluster widely tracked as Andariel (aka Onyx Sleet or Silent Chollima), a sub-group within the Lazarus umbrella. "Andariel is typically tasked with initial access, reconnaissance and establishing long term access for espionage in support of the North Korean government's national interests," Talos researchers Jung soo An, As...

What do hijacked websites, fake job offers, and sneaky ransomware have in common? They're proof that cybercriminals are finding smarter, sneakier ways to exploit both systems and people. This week makes one thing clear: no system, no person, no organization is truly off-limits. Attackers are getting smarter, faster, and more creative—using everything from human trust to hidden flaws in technology. The real question is: are you ready? 💪 Every attack holds a lesson, and every lesson is an opportunity to strengthen your defenses. This isn't just news—it's your guide to staying safe in a world where cyber threats are everywhere. Let's dive in. ⚡ Threat of the Week Palo Alto Networks Warns of Zero-Day: A remote code execution flaw in the Palo Alto Networks PAN-OS firewall management interface is the newest zero-day to be actively exploited in the wild. The company began warning about potential exploitation concerns on November 8, 2024. It has since been confirmed that it has been we...

Threat actors are actively weaponizing unpatched servers affected by the newly identified " Log4Shell " vulnerability in Log4j to install cryptocurrency miners, Cobalt Strike, and recruit the devices into a botnet, even as telemetry signs point to exploitation of the flaw nine days before it even came to light. Netlab, the networking security division of Chinese tech giant Qihoo 360,  disclosed  threats such as  Mirai  and  Muhstik  (aka Tsunami) are setting their sights on vulnerable systems to spread the infection and grow its computing power to orchestrate distributed denial-of-service (DDoS) attacks with the goal of overwhelming a target and rendering it unusable. Muhstik was previously spotted exploiting a critical security flaw in Atlassian Confluence ( CVE-2021-26084 , CVSS score: 9.8) earlier this September. The latest development comes as it has emerged that the vulnerability has been under attack for at least more than a week prior to its pub...

The threat actors behind the RedTail cryptocurrency mining malware have added a recently disclosed security flaw impacting Palo Alto Networks firewalls to its exploit arsenal. The addition of the PAN-OS vulnerability to its toolkit has been complemented by updates to the malware, which now incorporates new anti-analysis techniques, according to findings from web infrastructure and security company Akamai. "The attackers have taken a step forward by employing private crypto-mining pools for greater control over mining outcomes despite the increased operational and financial costs," security researchers Ryan Barnett, Stiv Kupchik, and Maxim Zavodchik said in a technical report shared with The Hacker News. The infection sequence discovered by Akamai exploits a now-patched vulnerability in PAN-OS tracked as CVE-2024-3400 (CVSS score: 10.0) that could allow an unauthenticated attacker to execute arbitrary code with root privileges on the firewall. A successful exploitatio...