Search results for apache log4j security patch | Breaking Cybersecurity News | The Hacker News

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...

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...

Most security practitioners are now aware of the Log4Shell vulnerability discovered toward the end of 2021. No one knows how long the vulnerability existed before it was discovered. The past couple of months have had security teams scrambling to patch the Log4Shell vulnerability found in Apache Log4j, a Java library widely used to log error messages in applications. Beyond patching, it's helpful and instructive for security practitioners to have a deeper understanding of this most recent critical vulnerability. Fortunately, Cynet Senior Security Researcher Igor Lahav is hosting a webinar [ Register here ] to provide "buzzword free" insights into Log4Shell. Based on a webinar preview provided by Cynet, the discussion will cover the software bugs in Apache Log4j that permitted the critical vulnerability, the exploits used to take advantage of the vulnerabilities and the remediation options available to protect your organization. This webinar will help make sense of the so...

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. ...

China's internet regulator, the Ministry of Industry and Information Technology (MIIT), has temporarily suspended a partnership with Alibaba Cloud, the cloud computing subsidiary of e-commerce giant Alibaba Group, for six months on account of the fact that it failed to promptly inform the government about a critical security vulnerability affecting the broadly used Log4j logging library. The development was disclosed by  Reuters  and  South China Morning Post , citing a report from 21st Century Business Herald, a Chinese business-news daily newspaper. "Alibaba Cloud did not immediately report vulnerabilities in the popular, open-source logging framework Apache Log4j2 to China's telecommunications regulator," Reuters said. "In response, MIIT suspended a cooperative partnership with the cloud unit regarding cybersecurity threats and information-sharing platforms." Tracked as  CVE-2021-44228  (CVSS score: 10.0) and codenamed  Log4Shell  or LogJam, t...

WordPress security company Wordfence on Thursday said it started detecting exploitation attempts targeting the newly disclosed flaw in Apache Commons Text on October 18, 2022. The vulnerability, tracked as  CVE-2022-42889  aka Text4Shell , has been assigned a severity ranking of 9.8 out of a possible 10.0 on the CVSS scale and affects versions 1.5 through 1.9 of the library. It's also similar to the now infamous  Log4Shell  vulnerability in that the  issue  is rooted in the manner  string substitutions  carried out during  DNS, script, and URL lookups  could lead to the execution of arbitrary code on susceptible systems when passing untrusted input. "The attacker can send a crafted payload remotely using 'script,' 'dns,' and 'url' lookups to achieve arbitrary remote code execution," the Zscaler ThreatLabZ team explained . A  successful exploitation of the flaw  can enable a threat actor to open a reverse shell conn...

Romanian cybersecurity technology company Bitdefender on Monday revealed that attempts are being made to target Windows machines with a novel ransomware family called  Khonsari  as well as a remote access Trojan named  Orcus  by exploiting the recently disclosed critical Log4j vulnerability . The attack leverages the remote code execution (RCE) flaw to download an additional payload, a .NET binary, from a remote server that encrypts all the files with the extension ".khonsari" and displays a ransom note that urges the victims to make a Bitcoin payment in exchange for recovering access to the files. Tracked as CVE-2021-44228 , the RCE vulnerability is also known by the monikers "Log4Shell" or "Logjam" and impacts versions 2.0-beta9 to 2.14.1 of the software library. In simple terms, the bug could force an affected system to download malicious software, giving the attackers a digital beachhead on servers located within corporate networks. Log4j is an op...

Threat actors are actively exploiting a recently disclosed critical security flaw impacting Apache HugeGraph-Server that could lead to remote code execution attacks. Tracked as CVE-2024-27348 (CVSS score: 9.8), the vulnerability impacts all versions of the software before 1.3.0. It has been described as a remote command execution flaw in the Gremlin graph traversal language API. "Users are recommended to upgrade to version 1.3.0 with Java11 and enable the Auth system, which fixes the issue," the Apache Software Foundation noted in late April 2024. "Also you could enable the 'Whitelist-IP/port' function to improve the security of RESTful-API execution." Additional technical specifics about the flaw were released by penetration testing company SecureLayer7 in early June, stating it enables an attacker to bypass sandbox restrictions and achieve code execution, giving them complete control over a susceptible server. This week, the Shadowserver Foundat...

A financially motivated threat actor has been outed as an initial access broker (IAB) that sells access to compromised organizations for other adversaries to conduct follow-on attacks such as ransomware. SecureWorks Counter Threat Unit (CTU) has dubbed the e-crime group  Gold Melody , which is also known by the names Prophet Spider (CrowdStrike) and UNC961 (Mandiant). "This financially motivated group has been active since at least 2017, compromising organizations by exploiting vulnerabilities in unpatched internet-facing servers," the cybersecurity company  said . "The victimology suggests opportunistic attacks for financial gain rather than a targeted campaign conducted by a state-sponsored threat group for espionage, destruction, or disruption." Gold Melody has been  previously   linked  to  attacks  exploiting security flaws in JBoss Messaging (CVE-2017-7504), Citrix ADC (CVE-2019-19781), Oracle WebLogic (CVE-2020-14750 and CVE-2020-14882), ...

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...

As many as 768 vulnerabilities with designated CVE identifiers were reported as exploited in the wild in 2024, up from 639 CVEs in 2023, registering a 20% increase year-over-year. Describing 2024 as "another banner year for threat actors targeting the exploitation of vulnerabilities," VulnCheck said 23.6% of known exploited vulnerabilities (KEV) were known to be weaponized either on or before the day their CVEs were publicly disclosed. This marks a slight decrease from 2023's 26.8%, indicating that exploitation attempts can take place at any time in a vulnerability's lifecycle. "During 2024, 1% of the CVEs published were reported publicly as exploited in the wild," VulnCheck's Patrick Garrity said in a report shared with The Hacker News. "This number is expected to grow as exploitation is often discovered long after a CVE is published." The report comes over two months after the company revealed that 15 different Chinese hacking groups o...