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The Hacker News - Cybersecurity News and Analysis: remote code execution

Flaw Affecting Millions of Cisco Devices Let Attackers Implant Persistent Backdoor

Flaw Affecting Millions of Cisco Devices Let Attackers Implant Persistent Backdoor

May 14, 2019Mohit Kumar
Researchers have discovered a severe vulnerability in Cisco products that could allow attackers to implant persistent backdoor on wide range devices used in enterprises and government networks, including routers, switches, and firewalls. Dubbed Thrangrycat or 😾😾😾, the vulnerability, discovered by researchers from the security firm Red Balloon and identified as CVE-2019-1649, affects multiple Cisco products that support Trust Anchor module (TAm). Trust Anchor module (TAm) is a hardware-based Secure Boot functionality implemented in almost all of Cisco enterprise devices since 2013 that ensures the firmware running on hardware platforms is authentic and unmodified. However, researchers found a series of hardware design flaws that could allow an authenticated attacker to make the persistent modification to the Trust Anchor module via FPGA bitstream modification and load the malicious bootloader. "An attacker with root privileges on the device can modify the contents of
Pre-Installed Software Flaw Exposes Most Dell Computers to Remote Hacking

Pre-Installed Software Flaw Exposes Most Dell Computers to Remote Hacking

May 02, 2019Mohit Kumar
If you use a Dell computer, then beware — hackers could compromise your system remotely. Bill Demirkapi, a 17-year-old independent security researcher, has discovered a critical remote code execution vulnerability in the Dell SupportAssist utility that comes pre-installed on most Dell computers . Dell SupportAssist , formerly known as Dell System Detect , checks the health of your computer system's hardware and software. The utility has been designed to interact with the Dell Support website and automatically detect Service Tag or Express Service Code of your Dell product, scan the existing device drivers and install missing or available driver updates, as well as perform hardware diagnostic tests. If you are wondering how it works, Dell SupportAssist in the background runs a web server locally on the user system, either on port 8884, 8883, 8886, or port 8885, and accepts various commands as URL parameters to perform some-predefined tasks on the computer, like collecting
'Highly Critical' Unpatched Zero-Day Flaw Discovered In Oracle WebLogic

'Highly Critical' Unpatched Zero-Day Flaw Discovered In Oracle WebLogic

April 25, 2019Mohit Kumar
A team of cybersecurity researchers today published a post warning enterprises of an unpatched, highly critical zero-day vulnerability in Oracle WebLogic server application that some attackers might have already started exploiting in the wild. Oracle WebLogic is a scalable, Java-based multi-tier enterprise application server that allows businesses to quickly deploy new products and services on the cloud. It's popular across both, cloud environment and conventional environments. Oracle WebLogic application reportedly contains a critical deserialization remote code execution vulnerability that affects all versions of the software, which can be triggered if the "wls9_async_response.war" and "wls-wsat.war" components are enabled. The vulnerability, spotted by the researchers from KnownSec 404, allows attackers to remotely execute arbitrary commands on the affected servers just by sending a specially crafted HTTP request—without requiring any authorization.
Hackers Actively Exploiting Widely-Used Social Share Plugin for WordPress

Hackers Actively Exploiting Widely-Used Social Share Plugin for WordPress

April 23, 2019Swati Khandelwal
Hackers have been found exploiting a pair of critical security vulnerabilities in one of the popular social media sharing plugins to take control over WordPress websites that are still running a vulnerable version of the plugin. The vulnerable plugin in question is Social Warfare which is a popular and widely deployed WordPress plugin with more than 900,000 downloads. It is used to add social share buttons to a WordPress website or blog. Late last month, maintainers of Social Warfare for WordPress released an updated version 3.5.3 of their plugin to patch two security vulnerabilities—stored cross-site scripting (XSS) and remote code execution (RCE)—both tracked by a single identifier, i.e., CVE-2019-9978 . Hackers can exploit these vulnerabilities to run arbitrary PHP code and take complete control over websites and servers without authentication, and then use the compromised sites to perform digital coin mining or host malicious exploit code. However, the same day when Soc
Drupal Releases Core CMS Updates to Patch Several Vulnerabilities

Drupal Releases Core CMS Updates to Patch Several Vulnerabilities

April 17, 2019Swati Khandelwal
Drupal, the popular open-source content management system, has released security updates to address multiple "moderately critical" vulnerabilities in Drupal Core that could allow remote attackers to compromise the security of hundreds of thousands of websites. According to the advisories published today by the Drupal developers, all security vulnerabilities Drupal patched this month reside in third-party libraries that are included in Drupal 8.6, Drupal 8.5 or earlier and Drupal 7. One of the security flaws is a cross-site scripting (XSS) vulnerability that resides in a third-party plugin, called JQuery, the most popular JavaScript library that is being used by millions of websites and also comes pre-integrated in Drupal Core. Last week, JQuery released its latest version jQuery 3.4.0 to patch the reported vulnerability, which has not yet assigned a CVE number, that affects all prior versions of the library to that date. "jQuery 3.4.0 includes a fix for som
Zero-Day Flaws in Counter-Strike 1.6 Let Malicious Servers Hack Gamers' PCs

Zero-Day Flaws in Counter-Strike 1.6 Let Malicious Servers Hack Gamers' PCs

March 14, 2019Mohit Kumar
If you are a Counter-Strike gamer, then beware, because 39% of all existing Counter-Strike 1.6 game servers available online are malicious that have been set-up to remotely hack gamers' computers. A team of cybersecurity researchers at Dr. Web has disclosed that an attacker has been using malicious gaming servers to silently compromise computers of Counter-Strike gamers worldwide by exploiting zero-day vulnerabilities in the game client. According to the researchers, Counter-Strike 1.6, a popular game that's almost two decades old, contains unpatched multiple remote code execution (RCE) vulnerabilities in its client software that let attackers execute arbitrary code on the gamer's computer as soon as they connect to a malicious server, without requiring any further interaction from the gamers. It turned out that a Russian gaming server developer, nicknamed 'Belonard,' has been exploiting these vulnerabilities in the wild to promote his business and create a
Adobe Releases Patches for Critical Flaws in Photoshop CC and Digital Edition

Adobe Releases Patches for Critical Flaws in Photoshop CC and Digital Edition

March 12, 2019Swati Khandelwal
Adobe users would feel lighter this month, as Adobe has released patches for just two security vulnerability in its March Security Update. The company today released its monthly security updates to address two critical arbitrary code execution vulnerabilities—one in Adobe Photoshop CC and another in Adobe Digital Editions. Upon successful exploitation, both critical vulnerabilities could allow an attacker to achieve arbitrary code execution in the context of the current user and take control of an affected system. However, the good news is that the company found no evidence of any exploits in the wild for these security issues, Adobe said. The vulnerability in Adobe Photoshop CC , discovered by Trend Micro Zero Day Initiative and assigned CVE-2019-7094, is a heap corruption issue which affects Photoshop CC 19.1.7 and earlier 19.x versions as well as Photoshop CC 20.0.2 and earlier 20.x versions for Microsoft Windows and Apple macOS operating systems. Users are recommended
Hackers Actively Exploiting Latest Drupal RCE Flaw Published Last Week

Hackers Actively Exploiting Latest Drupal RCE Flaw Published Last Week

February 26, 2019Swati Khandelwal
Cybercriminals have actively started exploiting an already patched security vulnerability in the wild to install cryptocurrency miners on vulnerable Drupal websites that have not yet applied patches and are still vulnerable. Last week, developers of the popular open-source content management system Drupal patched a critical remote code execution (RCE) vulnerability (CVE-2019-6340) in Drupal Core that could allow attackers to hack affected websites. Despite releasing no technical details of the security vulnerability, the proof-of-concept (PoC) exploit code for the vulnerability was made publicly available on the Internet just two days after the Drupal security team rolled out the patched version of its software. Now, security researchers at data center security vendor Imperva discovered a series of attacks—that began just a day after the exploit code went public—against its customers' websites using an exploit that leverages the CVE-2019-6340 security flaw. The attacks or
Another Critical Flaw in Drupal Discovered — Update Your Site ASAP!

Another Critical Flaw in Drupal Discovered — Update Your Site ASAP!

February 21, 2019Wang Wei
Developers of Drupal—a popular open-source content management system software that powers millions of websites—have released the latest version of their software to patch a critical vulnerability that could allow remote attackers to hack your site. The update came two days after the Drupal security team released an advance security notification of the upcoming patches, giving websites administrators early heads-up to fix their websites before hackers abuse the loophole. The vulnerability in question is a critical remote code execution (RCE) flaw in Drupal Core that could "lead to arbitrary PHP code execution in some cases," the Drupal security team said. While the Drupal team hasn't released any technical details of the vulnerability (CVE-2019-6340), it mentioned that the flaw resides due to the fact that some field types do not properly sanitize data from non-form sources and affects Drupal 7 and 8 Core. It should also be noted that your Drupal-based website
Warning: Critical WinRAR Flaw Affects All Versions Released In Last 19 Years

Warning: Critical WinRAR Flaw Affects All Versions Released In Last 19 Years

February 21, 2019Swati Khandelwal
Beware Windows users... a new dangerous remote code execution vulnerability has been discovered in the WinRAR software, affecting hundreds of millions of users worldwide. Cybersecurity researchers at Check Point have disclosed technical details of a critical vulnerability in WinRAR—a popular Windows file compression application with 500 million users worldwide—that affects all versions of the software released in last 19 years. The flaw resides in the way an old third-party library, called UNACEV2.DLL, used by the software handled the extraction of files compressed in ACE data compression archive file format. However, since WinRAR detects the format by the content of the file and not by the extension, attackers can merely change the .ace extension to .rar extension to make it look normal. According to researchers, they found an "Absolute Path Traversal" bug in the library that could be leveraged to execute arbitrary code on a targeted system attempting to uncompre
Critical Flaw Uncovered In WordPress That Remained Unpatched for 6 Years

Critical Flaw Uncovered In WordPress That Remained Unpatched for 6 Years

February 19, 2019Swati Khandelwal
Exclusive — If you have not updated your website to the latest WordPress version 5.0.3, it's a brilliant idea to upgrade the content management software of your site now. From now, I mean immediately. Cybersecurity researchers at RIPS Technologies GmbH today shared their latest research with The Hacker News, revealing the existence of a critical remote code execution vulnerability that affects all previous versions of WordPress content management software released in the past 6 years. The remote code execution attack, discovered and reported to the WordPress security team late last year, can be exploited by a low privileged attacker with at least an "author" account using a combination of two separate vulnerabilities—Path Traversal and Local File Inclusion—that reside in the WordPress core. The requirement of at least an author account reduces the severity of this vulnerability to some extent, which could be exploited by a rogue content contributor or an attacker w
Android Phones Can Get Hacked Just by Looking at a PNG Image

Android Phones Can Get Hacked Just by Looking at a PNG Image

February 06, 2019Swati Khandelwal
Using an Android device? Beware! You have to remain more caution while opening an image file on your smartphone—downloaded anywhere from the Internet or received through messaging or email apps. Yes, just viewing an innocuous-looking image could hack your Android smartphone—thanks to three newly-discovered critical vulnerabilities that affect millions of devices running recent versions of Google's mobile operating system, ranging from Android 7.0 Nougat to its current Android 9.0 Pie. The vulnerabilities, identified as CVE-2019-1986, CVE-2019-1987, and CVE-2019-1988, have been patched in Android Open Source Project (AOSP) by Google as part of its February Android Security Updates . However, since not every handset manufacturer rolls out security patches every month, it's difficult to determine if your Android device will get these security patches anytime sooner. Although Google engineers have not yet revealed any technical details explaining the vulnerabilities, t
Flaws in Popular RDP Clients Allow Malicious Servers to Reverse Hack PCs

Flaws in Popular RDP Clients Allow Malicious Servers to Reverse Hack PCs

February 05, 2019Swati Khandelwal
You've always been warned not to share remote access to your computer with any untrusted people for many reasons—it's basic cyber security advice, and common sense, right? But what if I say, you should not even trust anyone who invites or offers you full remote access to their computers? Security researchers at cybersecurity firm Check Point have discovered more than two dozen vulnerabilities in both open-source RDP clients and Microsoft's own proprietary client that could allow a malicious RDP server to compromise a client computer, reversely. RDP, or Remote Desktop Protocol, allows users to connect to remote computers. The protocol is usually used by technical users and IT administrators to remotely connect to other devices on the network. RDP was initially developed by Microsoft for its Windows operating system, but there are several open source clients for the RDP protocol that can be used on Linux as well as Unix systems. Check Point researchers recently
Severe RCE Flaw Disclosed in Popular LibreOffice and OpenOffice Software

Severe RCE Flaw Disclosed in Popular LibreOffice and OpenOffice Software

February 05, 2019Swati Khandelwal
It's 2019, and just opening an innocent looking office document file on your system can still allow hackers to compromise your computer. No, I'm not talking about yet another vulnerability in Microsoft Office, but in two other most popular alternatives— LibreOffice and Apache OpenOffice —free, open source office software used by millions of Windows, MacOS and Linux users. Security researcher Alex Inführ has discovered a severe remote code execution (RCE) vulnerability in these two open source office suites that could be triggered just by opening a maliciously-crafted ODT (OpenDocument Text) file. The attack relies on exploiting a directory traversal flaw, identified as CVE-2018-16858, to automatically execute a specific python library bundled within the software using a hidden onmouseover event. To exploit this vulnerability, Inführ created  an ODT file with a white-colored hyperlink (so it can't be seen) that has an "onmouseover" event to trick victim
Adobe Issues Emergency Patches for Two Critical Flaws in Acrobat and Reader

Adobe Issues Emergency Patches for Two Critical Flaws in Acrobat and Reader

January 04, 2019Swati Khandelwal
I hope you had biggest, happiest and craziest New Year celebration, but now it's time to come back at work and immediately update your systems to patch new security flaws that could exploit your computer just by opening a PDF file. Adobe has issued an out-of-band security update to patch two critical vulnerabilities in the company's Acrobat and Reader for both the Windows and macOS operating systems. Though the San Jose, California-based software company did not give details about the vulnerabilities, it did classify the security flaws as critical since they allow privilege escalation and arbitrary code execution in the context of the current user. Both the vulnerabilities were reported to Adobe by security researchers--Abdul-Aziz Hariri and Sebastian Apelt—from Trend Micro's Zero Day Initiative (ZDI). Critical Adobe Acrobat and Reader Vulnerabilities The first vulnerability, reported by Apelt and identified as CVE-2018-16011, is a use-after-free bug that can lead
How Just Opening A Site In Safari Could Have Hacked Your Apple macOS

How Just Opening A Site In Safari Could Have Hacked Your Apple macOS

November 22, 2018Swati Khandelwal
Earlier this week Dropbox team unveiled details of three critical vulnerabilities in Apple macOS operating system, which altogether could allow a remote attacker to execute malicious code on a targeted Mac computer just by convincing a victim into visiting a malicious web page. The reported vulnerabilities were originally discovered by Syndis , a cybersecurity firm hired by Dropbox to conduct simulated penetration testing attacks as Red Team on the company's IT infrastructure, including Apple software used by Dropbox . The vulnerabilities were discovered and disclosed to Apple security team in February this year, which were then patched by Apple just over one month later with the release of its  March security updates . DropBox applauded Apple for its quick response to its bug report. According to DropBox, the vulnerabilities discovered by Syndis didn't just affect its macOS fleet, but also affected all Safari users running the latest version of the web browser and op
Critical Flaws Found in Amazon FreeRTOS IoT Operating System

Critical Flaws Found in Amazon FreeRTOS IoT Operating System

October 19, 2018Swati Khandelwal
A security researcher has discovered several critical vulnerabilities in one of the most popular embedded real-time operating systems—called FreeRTOS—and its other variants, exposing a wide range of IoT devices and critical infrastructure systems to hackers. What is FreeRTOS (Amazon, WHIS OpenRTOS, SafeRTOS)? FreeRTOS is a leading open source real-time operating system (RTOS) for embedded systems that has been ported to over 40 microcontrollers, which are being used in IoT, aerospace, medical, automotive industries, and more. RTOS has specifically been designed to carefully run applications with very precise timing and a high degree of reliability, every time. A pacemaker is an excellent example of the real-time embedded system that contracts heart muscle at the right time, a process that can't afford delays, to keep a person alive. Since late last year, FreeRTOS project is being managed by Amazon, who created Amazon FreeRTOS (a:FreeRTOS) IoT operating system for mic
Just Answering A Video Call Could Compromise Your WhatsApp Account

Just Answering A Video Call Could Compromise Your WhatsApp Account

October 10, 2018Swati Khandelwal
What if just receiving a video call on WhatsApp could hack your smartphone? This sounds filmy, but Google Project Zero security researcher Natalie Silvanovich found a critical vulnerability in WhatsApp messenger that could have allowed hackers to remotely take full control of your WhatsApp just by video calling you over the messaging app. The vulnerability is a memory heap overflow issue which is triggered when a user receives a specially crafted malformed RTP packet via a video call request, which results in the corruption error and crashing the WhatsApp mobile app. Since the vulnerability affect RTP (Real-time Transport Protocol) implementation of Whatsapp, the flaw affects Android and iOS apps, but not WhatsApp Web that relies on WebRTC for video calls. Silvanovich also published a proof-of-concept exploit, along with the instructions for reproducing the WhatsApp attack. Although the proof-of-concept published by Silvanovich only triggers memory corruption, another Go
Researcher Discloses New Zero-Day Affecting All Versions of Windows

Researcher Discloses New Zero-Day Affecting All Versions of Windows

September 21, 2018Mohit Kumar
A security researcher has publicly disclosed an unpatched zero-day vulnerability in all supported versions of Microsoft Windows operating system (including server editions) after the company failed to patch a responsibly disclosed bug within the 120-days deadline. Discovered by Lucas Leong of the Trend Micro Security Research team, the zero-day vulnerability resides in Microsoft Jet Database Engine that could allow an attacker to remotely execute malicious code on any vulnerable Windows computer. The Microsoft JET Database Engine, or simply JET (Joint Engine Technology), is a database engine integrated within several Microsoft products, including Microsoft Access and Visual Basic. According to the an  advisory  released by Zero Day Initiative (ZDI), the vulnerability is due to a problem with the management of indexes in the Jet database engine that, if exploited successfully, can cause an out-out-bounds memory write, leading to remote code execution. An attacker must convi
Adobe Issues ColdFusion Software Update for 6 Critical Vulnerabilities

Adobe Issues ColdFusion Software Update for 6 Critical Vulnerabilities

September 11, 2018Swati Khandelwal
Adobe has released September 2018 security patch updates for a total of 10 vulnerabilities in Flash Player and ColdFusion, six of which are rated as critical that affected ColdFusion and could allow attackers to remotely execute arbitrary code on a vulnerable server. What's the good news this month for Adobe users? This month Adobe Acrobat and Reader applications did not receive any patch update, while Adobe Flash Player has received an update for just a single privilege escalation vulnerability (CVE-2018-15967) rated as important. Secondly, Adobe said none of the security vulnerabilities patched this month were either publicly disclosed or found being actively exploited in the wild. Total 9 Security Patches for Adobe ColdFusion Adobe has addressed a total of nine security vulnerabilities in its ColdFusion web application development platform, six of which are critical, two important and one moderate. According to the advisory released by Adobe, ColdFusion contain
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