Java | Breaking Cybersecurity News | The Hacker News

A critical security vulnerability has been disclosed in the Apache Roller open-source, Java-based blogging server software that could allow malicious actors to retain unauthorized access even after a password change. The flaw, assigned the CVE identifier CVE-2025-24859 , carries a CVSS score of 10.0, indicating maximum severity. It affects all versions of Roller up to and including 6.1.4. "A session management vulnerability exists in Apache Roller before version 6.1.5 where active user sessions are not properly invalidated after password changes," the project maintainers said in an advisory. "When a user's password is changed, either by the user themselves or by an administrator, existing sessions remain active and usable." Successful exploitation of the flaw could enable an attacker to maintain continued access to the application through old sessions even after password changes. It could also enable unfettered access if credentials were compromised. Th...

A recently disclosed security flaw impacting Apache Tomcat has come under active exploitation in the wild following the release  of a public proof-of-concept (PoC) a mere 30 hours after public disclosure. The vulnerability, tracked as CVE-2025-24813 , affects the below versions - Apache Tomcat 11.0.0-M1 to 11.0.2 Apache Tomcat 10.1.0-M1 to 10.1.34 Apache Tomcat 9.0.0-M1 to 9.0.98 It concerns a case of remote code execution or information disclosure when specific conditions are met - Writes enabled for the default servlet (disabled by default) Support for partial PUT (enabled by default) A target URL for security sensitive uploads that is a sub-directory of a target URL for public uploads Attacker knowledge of the names of security sensitive files being uploaded The security sensitive files are also being uploaded via partial PUT Successful exploitation could permit a malicious user to view security sensitive files or inject arbitrary content into those files by mea...

The Apache Software Foundation (ASF) has released patches to address a maximum severity vulnerability in the MINA Java network application framework that could result in remote code execution under specific conditions. Tracked as CVE-2024-52046 , the vulnerability carries a CVSS score of 10.0. It affects versions 2.0.X, 2.1.X, and 2.2.X. "The ObjectSerializationDecoder in Apache MINA uses Java's native deserialization protocol to process incoming serialized data but lacks the necessary security checks and defenses," the project maintainers said in an advisory released on December 25, 2024. "This vulnerability allows attackers to exploit the deserialization process by sending specially crafted malicious serialized data, potentially leading to remote code execution (RCE) attacks." However, it bears noting that the vulnerability is exploitable only if the "IoBuffer#getObject()" method is invoked in combination with certain classes such as ProtocolC...

The Apache Software Foundation (ASF) has released a security update to address an important vulnerability in its Tomcat server software that could result in remote code execution (RCE) under certain conditions. The vulnerability, tracked as CVE-2024-56337 , has been described as an incomplete mitigation for CVE-2024-50379 (CVSS score: 9.8), another critical security flaw in the same product that was previously addressed on December 17, 2024. "Users running Tomcat on a case insensitive file system with the default servlet write enabled (readonly initialisation parameter set to the non-default value of false) may need additional configuration to fully mitigate CVE-2024-50379 depending on which version of Java they are using with Tomcat," the project maintainers said in an advisory last week. Both the flaws are Time-of-check Time-of-use ( TOCTOU ) race condition vulnerabilities that could result in code execution on case-insensitive file systems when the default servlet is...

A critical security flaw has been disclosed in the Apache Avro Java Software Development Kit (SDK) that, if successfully exploited, could allow the execution of arbitrary code on susceptible instances. The flaw, tracked as CVE-2024-47561 (CVSS score: 9.3), impacts all versions of the software prior to 1.11.4. "Schema parsing in the Java SDK of Apache Avro 1.11.3 and previous versions allows bad actors to execute arbitrary code," the project maintainers said in an advisory released last week. "Users are recommended to upgrade to version 1.11.4 or 1.12.0, which fix this issue." Apache Avro, analogous to Google's Protocol Buffers ( protobuf ), is an open-source project that provides a language-neutral data serialization framework for large-scale data processing. The Avro team notes that the vulnerability affects any application if it allows users to provide their own Avro schemas for parsing. Kostya Kortchinsky from the Databricks security team has been cr...

A proof-of-concept (PoC) code demonstrating a newly disclosed digital signature bypass vulnerability in Java has been shared online.  The  high-severity flaw  in question,  CVE-2022-21449  (CVSS score: 7.5), impacts the following versions of Java SE and Oracle GraalVM Enterprise Edition - Oracle Java SE: 7u331, 8u321, 11.0.14, 17.0.2, 18 Oracle GraalVM Enterprise Edition: 20.3.5, 21.3.1, 22.0.0.2 The issue resides in Java's implementation of the Elliptic Curve Digital Signature Algorithm ( ECDSA ), a  cryptographic mechanism  to  digitally sign  messages and data for verifying the authenticity and the integrity of the contents. In a nutshell, the cryptographic blunder — dubbed Psychic Signatures in Java — makes it possible to present a totally blank signature, which would still be perceived as valid by the vulnerable implementation. Successful exploitation of the flaw could permit an attacker to forge signatures and bypass authenti...

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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...

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...

This newly discovered bugs in Java and Python is a big deal today. The two popular programming languages, Java and Python, contain similar security flaws that can be exploited to send unauthorized emails and bypass any firewall defenses. And since both the flaws remain unpatched, hackers can take advantage to design potential cyber attack operations against critical networks and infrastructures. The unpatched flaws actually reside in the way Java and Python programming languages handle File Transfer Protocol (FTP) links, where they don't syntax-check the username parameter, which leads to, what researchers call, protocol injection flaw. Java/Python FTP Injection to Send Unauthorized SMTP Emails In a blog pos t published over the past week, security researcher Alexander Klink detailed the FTP protocol injection vulnerability in Java's XML eXternal Entity (XXE) that allows attackers to inject non-FTP malicious commands inside an FTP connection request. To demonst...

Great news for Hackers and Bug-hunters who enjoy Programming and playing around with Software. A worldwide group of like-minded computer programmers is hosting The Next Hacker IPPC event on the 26th and 27th of February in Berlin, Germany, where participants can meet hackers and programmers from around the world while getting an opportunity to participate in one of the major hacking-related events in history. Yes, The Next Hacker is inviting Java programmers to participate in its International Programming Player Competition (IPPC) , which is going to be held on the second day of the event, i.e., 27th of February. The first day of 2016 IPPC event will offer technical sessions on programming, an open panel discussion with renowned hackers and programmers, as well as an opportunity for the world's top programmers to meet leading high-tech companies worldwide. The Next Hacker is an outstanding programming event with more than 5,000 attendees – no less than 3,000 c...

A new research showed that Scripting languages, in general, give birth to more security vulnerabilities in web applications, which raised concerns over potential security bugs in millions of websites. The app security firm Veracode has released its State of Software Security: Focus on Application Development report ( PDF ), analyzing more than 200,000 separate applications from October 1, 2013, through March 31, 2015. The security researchers crawled popular web scripting languages including PHP, Java, JavaScript, Ruby, .NET, C and C++, Microsoft Classic ASP, Android, iOS, and COBOL, scanning hundreds of thousands of applications over the last 18 months. Also Read:  A Step-by-Step Guide — How to Install Free SSL Certificate On Your Website Researchers found that PHP – and less popular Web development languages Classic ASP and ColdFusion – are the riskiest programming languages for the Internet, while Java and .NET are the safest. Here's the Top 10 List: ...

Get Ready to update your Java program as Oracle has released its massive patch package for multiple security vulnerabilities in its software. The United States software maker Oracle releases its security updates every three months on Tuesday, which it referred to as " Critical Patch Updates " (CPU). Yesterday, Oracle released its first quarterly CPU-date of this year, issuing a total of 169 security fixes for hundreds of its products including Java, Fusion Middleware, Enterprise Manager and MySQL. The security update for Oracle's popular browser plug-in Java addresses vulnerabilities in the software, 14 of which could be remotely exploitable without authentication, that means an attacker wouldn't need a username and password to exploit them over a network. Four Java flaws were marked most severe and received a score of 10.0 on the Common Vulnerability Scoring System (CVSS) , the most critical ranking. Nine other Java flaws given a CVSS Base Score of 6.0 ...

NSS Labs issued the report titled " The Known Unknowns " to explain the dynamics behind the market of zero-day exploits. Last week I discussed about the necessity to define a model for " cyber conflict " to qualify the principal issues related to the use of cyber tools and cyber weapons in an Information Warfare context, today I decided to give more info to the readers on cyber arsenals of governments. Governments consider the use of cyber weapons as a coadiuvant to conventional weapons, these malicious application could be used for sabotage or for cyber espionage, they could be used to hit a specifically designed software (e.g. SCADA within a critical infrastructure ) or they could be used for large scale operations infecting thousand of machines exploiting zero-day in common application ( e.g. Java platform, Adobe software ). The zero-day flaw are the most important component for the design of an efficient cyber weapon, governments have recently created dedic...

Hackers are using a new exploit for a bug in the out-of-date but popular Java 6 platform to attack victims, and has been added to a commercially available Neutrino exploit kit. The use of Java 6 still is prevalent, opening up a significant number of users to the threat. F-secure analyst Timo Hirvonen warned about the exploit over Twitter, advising that he had found an exploit in the wild actively targeting an unpatched vulnerability in Java 6, named CVE-2013-2463 . The exploit's proof-of-concept was made public last week, prior to in-the-wild attacks surfacing on Monday. Oracle is aware of the hole but, since Java 6 is no longer supported, the company will not patch the issue. The vulnerability lies in Java Runtime Environment's 2D sub-component, which is used to make two-dimensional graphics. Because no patch is available, the exploits provides cybercriminals and other attackers an effective vehicle to launch attacks targeting users and organiz...

Other than Windows, Now other platforms are becoming more popular every day and attracting bad guys who are starting to create malicious code for other systems.  Java applications can run on multiple platforms with ease, thus no surprise that malicious code written in Java that is designed to target more than one operating system are becoming increasingly common. Researchers at McAfee Labs spotted another sample of Java based trojan dubbed as JV/BackDoor-FAZY  that opens a back door for an attacker to execute commands and acts as a bot after infection. According to researcher, The key to decrypt the config file was encrypted with Base 64, Triple-DES algorithm and Hex. Decrypting the file provides information about the backdoor connection, includes IP address, port number, operating system, mutex information, and password for the connection. " On execution, the JAR file opens the backdoor connection to the IP address and the port mentioned in the pla...

Founder and CEO of Security Explorations of Poland,  Adam Gowdiak has reported a new unpatched security vulnerability in JAVA that affects all Java versions, including 7u21 released last Tuesday. Gowdiak claims to have sent to Oracle a report about a reflection API vulnerability in the newly shipped Server Java Runtime Environment (JRE), notifying them of the new security weakness. " It can be used to achieve a complete Java security sandbox bypass on a target system ," Vulnerability allows attackers to completely bypass the language's sandbox to access the underlying system. Gowdiak has not published any further details about the vulnerability in order to give Oracle time to patch the problem. Last week's Oracle patch update repaired many issues plaguing the platform. Java 7 Update 21 contains 42 new security fixes for Oracle Java SE. A majority of these flaws are browse-to–a-hacked-site-and-get-infected vulnerabilities. According to Oracle, " 3...

Exploit kits are one of the dangerous cyber crime tool, where The Phoenix Exploit Kit is a good example of exploit packs used to exploit vulnerable software on the computers of unsuspecting Internet users. The Phoenix Exploit Kit is available for a base price of $2,200 in underground market by its malware author or developer.  Like other exploit kits , Phoenix also developed to exploit browser-based  vulnerabilities in outdated and insecure versions of browser plugins like Java, and Adobe Flash and Reader. Developer of Phoenix is known by nickname AlexUdakov on several forums. According to new investigation report published by  krebsonsecurity , AlexUdakov was also member of a forum called Darkode , whose administrator accounts were compromised few weeks before and that the intruders were able to gain access to private communications of the administrators.  Intruders was able to view full profiles and database of Dar...

Oracle has released emergency patches multiple of times in recent months for Java for one after another set of vulnerabilities . About 100 million computers reported to be vulnerable to unauthorized access via different flaw in Java software. Department of Homeland Security's US-CERT already warned users to disable Java permanently to stop hackers from taking control of users' machines. Security experts advised,'T he best defense we have right now for these kinds of attacks is to disable Java in the browser forever' . According to Websense experts, Most browser installations use outdated versions of the Java plug-in that are vulnerable to at least one of several exploits used in popular web attack toolkit. Exploit kits are a very common tool for distribution of many Java-based threats. To detect the vulnerable Java versions that are installed on systems and Websense experts, used their technology via ' threat intelligence network' , which monitors bi...