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A zero-day vulnerability in FortiOS SSL-VPN that Fortinet addressed last month was exploited by unknown actors in attacks targeting governments and other large organizations. "The complexity of the exploit suggests an advanced actor and that it is highly targeted at governmental or government-related targets," Fortinet researchers  said  in a post-mortem analysis published this week. The attacks entailed the exploitation of  CVE-2022-42475 , a heap-based buffer overflow flaw that could enable an unauthenticated remote attacker to execute arbitrary code via specifically crafted requests. The infection chain analyzed by the company shows that the end goal was to deploy a generic Linux implant modified for FortiOS that's equipped to compromise Fortinet's intrusion prevention system ( IPS ) software and establish connections with a remote server to download additional malware and execute commands. Fortinet said it was unable to recover the payloads used in the subs...

A recent IcedID malware attack enabled the threat actor to compromise the Active Directory domain of an unnamed target less than 24 hours after gaining initial access, while also borrowing techniques from other groups like Conti to meet its goals. "Throughout the attack, the attacker followed a routine of recon commands, credential theft, lateral movement by abusing Windows protocols, and executing Cobalt Strike on the newly compromised host," Cybereason researchers  said  in a report published this week. IcedID , also known by the name BokBot, started its life as a banking trojan in 2017 before evolving into a  dropper for other malware , joining the likes of  Emotet ,  TrickBot ,  Qakbot ,  Bumblebee , and  Raspberry Robin . Attacks involving the delivery of IcedID have  leveraged a variety of methods , especially in the wake of  Microsoft's decision to block macros  from Office files downloaded from the web. The intrusion d...

Security researchers have disclosed multiple architectural vulnerabilities in Siemens SIMATIC and SIPLUS S7-1500 programmable logic controllers (PLCs) that could be exploited by a malicious actor to stealthily install firmware on affected devices and take control of them. Discovered by Red Balloon Security , the issues are tracked as  CVE-2022-38773  (CVSS score: 4.6), with the low severity stemming from the prerequisite that exploitation requires physical tampering of the device. The flaws "could allow attackers to bypass all protected boot features, resulting in persistent arbitrary modification of operating code and data," the company  said . More than 100 models are susceptible. Put differently, the weaknesses are the result of a lack of asymmetric signature verifications for firmware at bootup, effectively permitting the attacker to load tainted bootloader and firmware in a manner that undermines integrity protections. A more severe consequence of loading such ...

Details have emerged about a now-patched vulnerability in Google Chrome and Chromium-based browsers that, if successfully exploited, could have made it possible to siphon files containing confidential data. "The issue arose from the way the browser interacted with  symlinks  when processing files and directories," Imperva researcher Ron Masas  said . "Specifically, the browser did not properly check if the symlink was pointing to a location that was not intended to be accessible, which allowed for the theft of sensitive files." Google characterized the medium-severity issue (CVE-2022-3656) as a case of insufficient data validation in File System,  releasing   fixes  for it in versions 107 and 108 released in October and November 2022. Dubbed SymStealer, the vulnerability, at its core, relates to a type of weakness known as symbolic link (aka symlink) following, which  occurs  when an attacker abuses the feature to bypass the file system restr...

A recently published  Security Navigator  report data shows that businesses are still taking 215 days to patch a reported vulnerability. Even for critical vulnerabilities, it generally takes more than 6 months to patch. Good vulnerability management is not about being fast enough in patching all potential breaches. It's about focusing on the real risk using vulnerability prioritization to correct the most significant flaws and reduce the company's attack surface the most. Company data and threat intelligence need to be correlated and automated. This is essential to enable internal teams focus their remediation efforts. Suitable technologies can take the shape of a global Vulnerability Intelligence Platform. Such a platform can help to prioritize vulnerabilities using a risk score and let companies focus on their real organizational risk.  Getting Started Three facts to have in mind before establishing an effective vulnerability management program:  1. The numbe...

Twitter on Wednesday said that its investigation found "no evidence" that users' data sold online was obtained by exploiting any security vulnerabilities in its systems. "Based on information and intel analyzed to investigate the issue, there is no evidence that the data being sold online was obtained by exploiting a vulnerability of Twitter systems," the company  said  in a statement. "The data is likely a collection of data already publicly available online through different sources." The disclosure comes in the wake of  multiple   reports  that Twitter data belonging to millions of users – 5.4 million in November 2022, 400 million in December 2022, and 200 million last week – have been made available for sale on online criminal forums. The social media giant further said the breach "could not be correlated with the previously reported incident, nor with any new incident," adding no passwords were exposed. The two datasets published in...