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Microsoft on Thursday warned of a consumer-facing attack that made use of rogue OAuth applications deployed on compromised cloud tenants to ultimately seize control of Exchange servers and spread spam. "The threat actor launched credential stuffing attacks against high-risk accounts that didn't have multi-factor authentication (MFA) enabled and leveraged the unsecured administrator accounts to gain initial access," the Microsoft 365 Defender Research Team said. The unauthorized access to the cloud tenant permitted the adversary to register a malicious OAuth application and grant it elevated permissions, and eventually modify Exchange Server settings to allow inbound emails from specific IP addresses to be routed through the compromised email server. "These modifications to the Exchange server settings allowed the threat actor to perform their primary goal in the attack: sending out spam emails," Microsoft  said . "The spam emails were sent as part of a...

A new wave of a mobile surveillance campaign has been observed targeting the Uyghur community as part of a long-standing spyware operation active since at least 2015, cybersecurity researchers disclosed Thursday. The intrusions, originally attributed to a threat actor named  Scarlet Mimic  back in January 2016, is said to have encompassed 20 different variants of the Android malware, which were disguised as books, pictures, and an audio version of the Quran. The malware, while relatively unsophisticated from a technical standpoint, comes with extensive capabilities to steal sensitive data from an infected device, send SMS messages on the victim's behalf, make phone calls, and track their locations. Additionally, it allows the recording of incoming and outgoing phone calls as well as surrounding audio. "All this makes it a powerful and dangerous surveillance tool," Israeli cybersecurity firm Check Point  said  in a technical deepdive, calling the spyware  M...

A malicious NPM package has been found masquerading as the legitimate software library for Material Tailwind, once again indicating attempts on the part of threat actors to distribute malicious code in open source software repositories. Material Tailwind is a  CSS-based framework  advertised by its maintainers as an "easy to use components library for Tailwind CSS and Material Design." "The malicious Material Tailwind npm package, while posing as a helpful development tool, has an automatic post-install script," Karlo Zanki, security researcher at ReversingLabs,  said  in a report shared with The Hacker News. This script is engineered to download a password-protected ZIP archive file that contains a Windows executable capable of running PowerShell scripts. The now-removed rogue package, named  material-tailwindcss , has been downloaded 320 times to date, all of which occurred on or after September 15, 2022. In a tactic that's becoming increasingly common,...

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Last month Tech Crunch reported that  payment terminal manufacturer Wiseasy had been hacked . Although Wiseasy might not be well known in North America, their Android-based payment terminals are widely used in the Asia Pacific region and hackers managed to steal passwords for 140,000 payment terminals. How Did the Wiseasy Hack Happen? Wiseasy employees use a cloud-based dashboard for remotely managing payment terminals. This dashboard allows the company to perform a variety of configuration and management tasks such as managing payment terminal users, adding or removing apps, and even locking the terminal.  Hackers were able to gain access to the Wiseasy dashboard by infecting employee's computers with malware. This allowed hackers to gain access to two different employee's dashboards, ultimately leading to a massive harvesting of payment terminal credentials once they gained access. Top Lessons Learned from the Wiseasy Hack 1 — Transparency isn't always the best policy...

Researchers have disclosed a new severe Oracle Cloud Infrastructure (OCI) vulnerability that could be exploited by users to access the virtual disks of other Oracle customers. "Each virtual disk in Oracle's cloud has a unique identifier called OCID," Shir Tamari, head of research at Wiz,  said  in a series of tweets. "This identifier is not considered secret, and organizations do not treat it as such." "Given the OCID of a victim's disk that is not currently attached to an active server or configured as shareable, an attacker could 'attach' to it and obtain read/write over it," Tamari added. The cloud security firm, which dubbed the tenant isolation vulnerability " AttachMe ," said Oracle  patched the issue  within 24 hours of responsible disclosure on June 9, 2022. Accessing a volume using the CLI without sufficient permissions At its core, the vulnerability is rooted in the fact that a disk could be attached to a compute ...

As many as 350,000 open source projects are believed to be potentially vulnerable to exploitation as a result of a security flaw in a Python module that has remained unpatched for 15 years. The open source repositories span a number of industry verticals, such as software development, artificial intelligence/machine learning, web development, media, security, and IT management. The shortcoming, tracked as  CVE-2007-4559  (CVSS score: 6.8), is rooted in the tarfile module, successful exploitation of which could lead to code execution from an arbitrary file write. "The vulnerability is a path traversal attack in the extract and extractall functions in the tarfile module that allow an attacker to overwrite arbitrary files by adding the '..' sequence to filenames in a TAR archive," Trellix security researcher Kasimir Schulz  said  in a writeup. Originally disclosed in August 2007, the bug has to do with how a specially crafted tar archive can be leveraged to overwr...

A now-patched critical security flaw affecting Atlassian Confluence Server that came to light a few months ago is being actively exploited for illicit cryptocurrency mining on unpatched installations. "If left unremedied and successfully exploited, this vulnerability could be used for multiple and more malicious attacks, such as a complete domain takeover of the infrastructure and the deployment information stealers, remote access trojans (RATs), and ransomware," Trend Micro threat researcher Sunil Bharti  said  in a report. The issue, tracked as  CVE-2022-26134  (CVSS score: 9.8), was addressed by the Australian software company in June 2022. In one of the infection chains observed by the cybersecurity company, the flaw was leveraged to download and run a shell script ("ro.sh") on the victim's machine, which, in turn, fetched a second shell script ("ap.sh"). The malicious code is designed to update the  PATH variable  to include additional paths...