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The Hacker News - Cybersecurity News and Analysis: encryption

Agora SDK Bug Left Several Video Calling Apps Vulnerable to Snooping

Agora SDK Bug Left Several Video Calling Apps Vulnerable to Snooping

February 17, 2021Ravie Lakshmanan
A severe security vulnerability in a popular video calling software development kit (SDK) could have allowed an attacker to spy on ongoing private video and audio calls. That's according to new research published by the McAfee Advanced Threat Research (ATR) team today, which found the aforementioned flaw in Agora.io's SDK used by several social apps such as eHarmony, Plenty of Fish, MeetMe, and Skout; healthcare apps like Talkspace, Practo, and Dr. First's Backline; and in the Android app that's paired with "temi" personal robot. California-based Agora is a video, voice, and live interactive streaming platform, allowing developers to embed voice and video chat, real-time recording, interactive live streaming, and real-time messaging into their apps. The company's SDKs are estimated to be embedded into mobile, web, and desktop applications across more than 1.7 billion devices globally. McAfee disclosed the flaw (CVE-2020-25605) to Agora.io on April 20
Google Discloses Severe Bug in Libgcrypt Encryption Library—Impacting Many Projects

Google Discloses Severe Bug in Libgcrypt Encryption Library—Impacting Many Projects

January 31, 2021Ravie Lakshmanan
A "severe" vulnerability in GNU Privacy Guard (GnuPG)'s Libgcrypt encryption software could have allowed an attacker to write arbitrary data to the target machine, potentially leading to remote code execution. The flaw, which affects version 1.9.0 of libgcrypt, was discovered on January 28 by Tavis Ormandy of Project Zero, a security research unit within Google dedicated to finding zero-day bugs in hardware and software systems. No other versions of Libgcrypt are affected by the vulnerability. "There is a  heap buffer overflow  in libgcrypt due to an incorrect assumption in the block buffer management code," Ormandy  said . "Just decrypting some data can overflow a heap buffer with attacker controlled data, no verification or signature is validated before the vulnerability occurs." GnuPG addressed the weakness almost immediately within a day after disclosure, while urging users to  stop using  the vulnerable version. The latest version can be dow
NSA Suggests Enterprises Use 'Designated' DNS-over-HTTPS' Resolvers

NSA Suggests Enterprises Use 'Designated' DNS-over-HTTPS' Resolvers

January 15, 2021Ravie Lakshmanan
The U.S. National Security Agency (NSA) on Friday said DNS over HTTPS (DoH) — if configured appropriately in enterprise environments — can help prevent "numerous" initial access, command-and-control, and exfiltration techniques used by threat actors. "DNS over Hypertext Transfer Protocol over Transport Layer Security (HTTPS), often referred to as DNS over HTTPS (DoH), encrypts DNS requests by using HTTPS to provide privacy, integrity, and 'last mile' source authentication with a client's DNS resolver," according to the NSA's  new guidance . Proposed in 2018,  DoH  is a protocol for performing remote Domain Name System resolution via the HTTPS protocol. One of the major shortcomings with current DNS lookups is that even when someone visits a site that uses HTTPS, the DNS query and its response is sent over an unencrypted connection, thus allowing third-party eavesdropping on the network to track every website a user is visiting. Even worse, the
This Unpatchable Flaw Affects All Intel CPUs Released in Last 5 Years

This Unpatchable Flaw Affects All Intel CPUs Released in Last 5 Years

March 06, 2020Wang Wei
All Intel processors released in the past 5 years contain an unpatchable vulnerability that could allow hackers to compromise almost every hardware-enabled security technology that are otherwise designed to shield sensitive data of users even when a system gets compromised. The vulnerability, tracked as CVE-2019-0090 , resides in the hard-coded firmware running on the ROM ("read-only memory") of the Intel's Converged Security and Management Engine (CSME), which can't be patched without replacing the silicon. Intel CSME is a separate security micro-controller incorporated into the processors that provides an isolated execution environment protected from the host opening system running on the main CPU. It is responsible for the initial authentication of Intel-based systems by loading and verifying firmware components, root of trust based secure boot, and also cryptographically authenticates the BIOS, Microsoft System Guard, BitLocker, and other security features
Researchers Find New Hack to Read Content Of Password Protected PDF Files

Researchers Find New Hack to Read Content Of Password Protected PDF Files

October 01, 2019Mohit Kumar
Looking for ways to unlock and read the content of an encrypted PDF without knowing the password? Well, that's now possible, sort of—thanks to a novel set of attacking techniques that could allow attackers to access the entire content of a password-protected or encrypted PDF file, but under some specific circumstances. Dubbed PDFex , the new set of techniques includes two classes of attacks that take advantage of security weaknesses in the standard encryption protection built into the Portable Document Format, better known as PDF. To be noted, the PDFex attacks don't allow an attacker to know or remove the password for an encrypted PDF; instead, enable attackers to remotely exfiltrate content once a legitimate user opens that document. In other words, PDFex allows attackers to modify a protected PDF document, without having the corresponding password, in a way that when opened by someone with the right password, the file will automatically send out a copy of the decry
Google Created Faster Storage Encryption for All Low-End Devices

Google Created Faster Storage Encryption for All Low-End Devices

February 08, 2019Swati Khandelwal
Google has launched a new encryption algorithm that has been built specifically to run on mobile phones and smart IoT devices that don't have the specialized hardware to use current encryption methods to encrypt locally stored data efficiently. Encryption has already become an integral part of our everyday digital activities. However, it has long been known that encryption is expensive, as it causes performance issues, especially for low-end devices that don't have hardware support for making the encryption and decryption process faster. Since data security concerns have recently become very important, not using encryption is no more a wise tradeoff, and at the same time, using a secure but slow device on which apps take much longer to launch is also not a great idea. Currently Android OS supports AES-128-CBC-ESSIV for full-disk encryption and AES-256-XTS for file-based encryption, and Google has already made it mandatory for device manufacturers to include AES encry
Australia Passes Anti-Encryption Bill—Here's Everything You Need To Know

Australia Passes Anti-Encryption Bill—Here's Everything You Need To Know

December 07, 2018Swati Khandelwal
Australia's House of Representatives has finally passed the "Telecommunications Assistance and Access Bill 2018," also known as the Anti-Encryption Bill , on Thursday that would now allow law enforcement to force Google, Facebook, WhatsApp, Signal, and other tech giants to help them access encrypted communications. The Australian government argues the new legislation is important for national security and an essential tool to help law enforcement and security agencies fight serious offenses such as crime, terrorist attacks, drug trafficking, smuggling, and sexual exploitation of children. Since the bill had support from both major parties (the Coalition and Labor), the upper house could vote in support of the Assistance and Access Bill to make it law, which is expected to come into effect immediately during the next session of parliament in early 2019. Although the new legislation does not properly clarify specifics around the potential power that the Assistance
Signal Secure Messaging App Now Encrypts Sender's Identity As Well

Signal Secure Messaging App Now Encrypts Sender's Identity As Well

October 30, 2018Swati Khandelwal
Signal, the popular end-to-end encrypted messaging app, is planning to roll out a new feature that aims to hide the sender's identity from potential attackers trying to intercept the communication. Although messages send via secure messaging services, like Signal , WhatsApp , and Telegram , are fully end-to-end encrypted as they transmit across their servers, each message leaves behind some of the metadata information that reveals who sent the message to whom and when. The new feature, dubbed " Sealed Sender ," announced by Signal is going to further reduce the amount of information that is accessible to the company itself. However, you should note that Signal never stores metadata or logs of information on its users like who sends messages to each other and when, but the new feature would protect the sender's identity in case the communication is somehow intercepted. How Does the Signal's Sealed Sender Feature Protect Metadata? According to a blog post
WPA3 Standard Officially Launches With New Wi-Fi Security Features

WPA3 Standard Officially Launches With New Wi-Fi Security Features

June 26, 2018Swati Khandelwal
The Wi-Fi Alliance today officially launched WPA3 —the next-generation Wi-Fi security standard that promises to eliminate all the known security vulnerabilities and wireless attacks that are up today including the dangerous KRACK attacks . WPA, or Wi-Fi Protected Access, is a standard designed to authenticate wireless devices using the Advanced Encryption Standard (AES) protocol and is intended to prevent hackers from eavesdropping on your wireless data. However, in late last year, security researchers uncovered a severe flaw in the current WPA2 protocol, dubbed KRACK (Key Reinstallation Attack), that made it possible for attackers to intercept, decrypt and even manipulate WiFi network traffic. Although most device manufacturers patched their devices against KRACK attacks, the WiFi Alliance, without much delay, rushed to finalize and launch WPA3 in order to address WPA2's technical shortcomings from the ground. What is WPA3? What New Security Features WPA3 Offers? WP
Z-Wave Downgrade Attack Left Over 100 Million IoT Devices Open to Hackers

Z-Wave Downgrade Attack Left Over 100 Million IoT Devices Open to Hackers

May 25, 2018Swati Khandelwal
Researchers have found that even after having an advanced encryption scheme in place, more than 100 million Internet-of-Things (IoT) devices from thousands of vendors are vulnerable to a downgrade attack that could allow attackers to gain unauthorized access to your devices. The issue resides in the implementation of Z-Wave protocol —a wireless, radio frequency (RF) based communications technology that is primarily being used by home automation devices to communicate with each other. Z-Wave protocol has been designed to offer an easy process to set up pairing and remotely control appliances—such as lighting control, security systems, thermostats, windows, locks, swimming pools and garage door openers—over a distance of up to 100 meters (330 feet). The latest security standard for Z-Wave, called S2 security framework, uses an advanced key exchange mechanism, i.e., Elliptic-Curve Diffie-Hellman (ECDH) anonymous key agreement protocol, to share unique network keys between the con
Apple macOS Bug Reveals Passwords for APFS Encrypted Volumes in Plaintext

Apple macOS Bug Reveals Passwords for APFS Encrypted Volumes in Plaintext

March 29, 2018Swati Khandelwal
A severe programming bug has been found in APFS file system for macOS High Sierra operating system that exposes passwords of encrypted external drives in plain text. Introduced two years ago, APFS ( Apple File System ) is an optimized file system for flash and SSD-based storage solutions running MacOS, iOS, tvOS or WatchOS, and promises strong encryption and better performance. Discovered by forensic analyst Sarah Edwards, the bug leaves encryption password for a newly created APFS volume (e.g., encrypting USB drive using Disk Utility) in the unified logs in plaintext, as well as while encrypting previously created but unencrypted volumes. "Why is this a big deal? Well, passwords stored in plaintext can be discovered by anyone with unauthorized access to your machine, and malware can collect log files as well and send them off to someone with malicious intent," Edwards said. The password for an encrypted APFS volume can easily be retrieved by running following sim
Skype Finally Adds End-to-End Encryption for Private Conversations

Skype Finally Adds End-to-End Encryption for Private Conversations

January 12, 2018Mohit Kumar
Good news for Skype users who are concerned about their privacy. Microsoft is collaborating with popular encrypted communication company Signal to bring end-to-end encryption support to Skype messenger. End-to-end encryption assured its users that no one, not even the company or server that transmits the data, can decrypt their messages. Signal Protocol is an open source cryptographic protocol that has become an industry-wide standard—which is used in  Facebook Messenger , Whatsapp , and Google Allo for secure messaging. Dubbed Private Conversations , the new feature which is about to be introduced in Skype will offer end-to-end encryption for audio calls, text, and multimedia messages like videos and audio files. "Skype Private Conversations give you enhanced security through end-to-end encryption with an additional layer of security for conversations between you and your friends and family," the company announced .  "Private Conversations can only be betwe
WhatsApp Flaw Could Allow 'Potential Attackers' to Spy On Encrypted Group Chats

WhatsApp Flaw Could Allow 'Potential Attackers' to Spy On Encrypted Group Chats

January 10, 2018Swati Khandelwal
A more dramatic revelation of 2018—an outsider can secretly eavesdrop on your private end-to-end encrypted group chats on WhatsApp and Signal messaging apps. Considering protection against three types of attackers—malicious user, network attacker, and malicious server—an end-to-end encryption protocol plays a vital role in securing instant messaging services. The primary purpose of having end-to-end encryption is to stop trusting the intermediate servers in such a way that no one, not even the company or the server that transmits the data, can decrypt your messages or abuse its centralized position to manipulate the service. In order words—assuming the worst-case scenario—a corrupt company employee should not be able to eavesdrop on the end-to-end encrypted communication by any mean. However, so far even the popular end-to-end encrypted messaging services, like WhatsApp, Threema and Signal, have not entirely achieved zero-knowledge system. Researchers from Ruhr-Universität
Forever 21 Confirms Security Breach Exposed Customer Credit Card Details

Forever 21 Confirms Security Breach Exposed Customer Credit Card Details

January 01, 2018Swati Khandelwal
First notified in November of a data breach incident, popular clothing retailer Forever 21 has now confirmed that hackers stole credit card information from its stores throughout the country for several months during 2017. Although the company did not yet specify the total number of its customers affected by the breach, it did confirm that malware was installed on some point of sale (POS) systems in stores across the U.S. at varying times between April 3, 2017, and November 18, 2017. According to the company's investigation, which is still ongoing, the malware was designed to search for and likely steal sensitive customer credit card data, including credit card numbers, expiration dates, verification codes and, in some cases, cardholder names. Forever 21 has been using encryption technology since 2015 to protect its payment processing systems, but during the investigation, the company found that some POS terminals at certain stores had their encryption switched off, whic
ROBOT Attack: 19-Year-Old Bleichenbacher Attack On Encrypted Web Reintroduced

ROBOT Attack: 19-Year-Old Bleichenbacher Attack On Encrypted Web Reintroduced

December 12, 2017Swati Khandelwal
A 19-year-old vulnerability has been re-discovered in the RSA implementation from at least 8 different vendors—including F5, Citrix, and Cisco—that can give man-in-the-middle attackers access to encrypted messages. Dubbed ROBOT ( Return of Bleichenbacher's Oracle Attack ), the attack allows an attacker to perform RSA decryption and cryptographic operations using the private key configured on the vulnerable TLS servers. ROBOT attack is nothing but a couple of minor variations to the old Bleichenbacher attack on the RSA encryption protocol. First discovered in 1998 and named after Swiss cryptographer Daniel Bleichenbacher, the Bleichenbacher attack is a padding oracle attack on RSA-based PKCS#1 v1.5 encryption scheme used in SSLv2. Leveraging an adaptive chosen-ciphertext attack which occurred due to error messages by SSL servers for errors in the PKCS #1 1.5 padding, Bleichenbacher attack allows attackers to determine whether a decrypted message is correctly padded.
IEEE P1735 Encryption Is Broken—Flaws Allow Intellectual Property Theft

IEEE P1735 Encryption Is Broken—Flaws Allow Intellectual Property Theft

November 07, 2017Mohit Kumar
Researchers have uncovered several major weaknesses in the implementation of the Institute of Electrical and Electronics Engineers (IEEE) P1735 cryptography standard that can be exploited to unlock, modify or steal encrypted system-on-chip blueprints. The IEEE P1735 scheme was designed to encrypt electronic-design intellectual property (IP) in the hardware and software so that chip designers can protect their IPs from hackers and other prying eyes. Majority of mobile and embedded devices include a System-on-Chip (SoC), a single integrated circuit that can consist of multiple IPs—a collection of reusable design specifications—like a radio-frequency receiver, an analogue-to-digital converter, a digital signal processing unit, a graphics processing unit, a cryptographic engine, from different vendors. Therefore, these licensed IPs are quite valuable to their vendors, so to protect them from being reverse engineered after being sold, the IEEE developed the P1735 standard to encryp
Google to add "DNS over TLS" security feature to Android OS

Google to add "DNS over TLS" security feature to Android OS

October 23, 2017Mohit Kumar
No doubt your Internet Service Provides (ISPs), or network-level hackers cannot spy on https communications. But do you know — ISPs can still see all of your DNS requests, allowing them to know what websites you visit. Google is working on a new security feature for Android that could prevent your Internet traffic from network spoofing attacks. Almost every Internet activity starts with a DNS query, making it a fundamental building block of the Internet. DNS works as an Internet's phone book that resolves human-readable web addresses, like thehackernews.com, against their IP addresses. DNS queries and responses are sent in clear text (using UDP or TCP) without encryption, which makes it vulnerable to eavesdropping and compromises privacy. ISPs by default resolve DNS queries from their servers. So when you type a website name in your browser, the query first goes to their DNS servers to find the website's IP address, which eventually exposes this information (metada
 Microsoft Cortana Can Now Read Your Skype Messages to Make Chat Smarter

Microsoft Cortana Can Now Read Your Skype Messages to Make Chat Smarter

October 10, 2017Mohit Kumar
Microsoft today announced built-in support for Cortana—an artificial intelligence-powered smart assistant—in Skype messenger on Android as well as iOS devices. What purpose does it serve? Microsoft wants its AI-based smart assistance to understand your conversations and help you with quick suggestions, ideas and information right inside your chat window. "Cortana can also help you organize your day—no need to leave your conversations. Cortana can detect when you're talking about scheduling events or things you have to do and will recommend setting up a reminder, which you will receive on all your devices that have Cortana enabled," Skype said in a blog post . In other words, it typically means — Microsoft's Cortana can now read your private Skype conversations. Should You Worry About Your Privacy? Yes, Cortana needs continuous monitoring of your private chats in order to come up with useful suggestions such as movie bookings, travel plans, nearby restaura
A Company Offers $500,000 For Secure Messaging Apps Zero-Day Exploits

A Company Offers $500,000 For Secure Messaging Apps Zero-Day Exploits

August 24, 2017Swati Khandelwal
How much does your privacy cost? It will soon be sold for half a Million US dollars. A controversial company specialises in acquiring and reselling zero-day exploits is ready to pay up to US$500,000 for working zero-day vulnerabilities targeting popular secure messenger applications, such as Signal, Telegram and WhatsApp. Zerodium announced a new pricing structure on Wednesday, paying out $500,000 for fully functional remote code execution (RCE) and local privilege escalation (LPE) vulnerabilities in Signal, WhatsApp, iMessage, Viber, Facebook Messenger, WeChat, and Telegram. The payouts for all these secure messengers have been increased after tech companies introduced end-to-end encryption in their apps, making it more difficult for anyone to compromise their messaging platforms. The same payout is offered for remote code execution and local privilege escalation security flaws in default mobile email applications. Launched in 2015, Zerodium is a Washington, DC-based p
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