The Hacker News | #1 Trusted Source for Cybersecurity News — Index Page

Cybersecurity researchers have discovered multiple security vulnerabilities in Zimbra email collaboration software that could be potentially exploited to compromise email accounts by sending a malicious message and even achieve a full takeover of the mail server when hosted on a cloud infrastructure. The flaws — tracked as CVE-2021-35208 and CVE-2021-35208 — were discovered and reported in Zimbra 8.8.15 by researchers from code quality and security solutions provider SonarSource in May 2021. Mitigations have since been  released  in Zimbra versions 8.8.15 Patch 23 and 9.0.0 Patch 16. CVE-2021-35208  (CVSS score: 5.4) - Stored XSS Vulnerability in ZmMailMsgView.java CVE-2021-35209  (CVSS score: 6.1) - Proxy Servlet Open Redirect Vulnerability "A combination of these vulnerabilities could enable an unauthenticated attacker to compromise a complete Zimbra webmail server of a targeted organization,"  said  SonarSource vulnerability researcher, Simon Sc...

Cybersecurity researchers on Tuesday disclosed nine security vulnerabilities affecting three open-source projects —  EspoCRM ,  Pimcore , and  Akaunting  — that are widely used by several small to medium businesses and, if successfully exploited, could provide a pathway to more sophisticated attacks. All the security flaws in question, which impact EspoCRM v6.1.6, Pimcore Customer Data Framework v3.0.0, Pimcore AdminBundle v6.8.0, and Akaunting v2.1.12, were fixed within a day of responsible disclosure, researchers Wiktor Sędkowski of Nokia and Trevor Christiansen of Rapid7  noted. Six of the nine flaws were uncovered in the Akaunting project. EspoCRM is an open-source customer relationship management (CRM) application, while Pimcore is an open-source enterprise software platform for customer data management, digital asset management, content management, and digital commerce. Akaunting, on the other hand, is an open-source and online accounting software desi...

Threat actors are increasingly shifting to "exotic" programming languages such as Go, Rust, Nim, and Dlang that can better circumvent conventional security protections, evade analysis, and hamper reverse engineering efforts. "Malware authors are known for their ability to adapt and modify their skills and behaviors to take advantage of newer technologies,"  said  Eric Milam, Vice President of threat research at BlackBerry. "That tactic has multiple benefits from the development cycle and inherent lack of coverage from protective products." On the one hand, languages like Rust are more secure as they offer guarantees like  memory-safe programming , but they can also be a double-edged sword when malware engineers abuse the same features designed to offer increased safeguards to their advantage, thereby making malware less susceptible to exploitation and thwart attempts to  activate a kill-switch  and render them powerless. Noting that binaries written i...

If you invite guest users into your Entra ID tenant, you may be opening yourself up to a surprising risk.  A gap in access control in Microsoft Entra's subscription handling is allowing guest users to create and transfer subscriptions into the tenant they are invited into, while maintaining full ownership of them.  All the guest user needs are the permissions to create subscriptions in their home tenant, and an invitation as a guest user into an external tenant. Once inside, the guest user can create subscriptions in their home tenant, transfer them into the external tenant, and retain full ownership rights. This stealthy privilege escalation tactic allows a guest user to gain a privileged foothold in an environment where they should only have limited access. Many organizations treat guest accounts as low-risk based on their temporary, limited access, but this behavior, which works as designed, opens the door to known attack paths and lateral movement within the resource t...

Apple on Monday rolled out an urgent security update for  iOS, iPadOS , and  macOS  to address a zero-day flaw that it said may have been actively exploited, making it the thirteenth such vulnerability Apple has patched since the start of this year. The updates, which arrive less than a week after the company released iOS 14.7, iPadOS 14.7, and macOS Big Sur 11.5 to the public, fixes a memory corruption issue ( CVE-2021-30807 ) in the IOMobileFrameBuffer component, a kernel extension for managing the screen  framebuffer , that could be abused to execute arbitrary code with kernel privileges. The company said it addressed the issue with improved memory handling, noting it's "aware of a report that this issue may have been actively exploited." As is typically the case, additional details about the flaw have not been disclosed to prevent the weaponization of the vulnerability for additional attacks. Apple credited an anonymous researcher for discovering and reporting...

There is a saying that goes something like, "Do not judge a book by its cover." Yet, we all know we can not help but do just that - especially when it comes to online security. Logos play a significant role in whether or not we open an email and how we assess the importance of each message. Brand Indicators for Message Identification, or BIMI, aims to make it easier for us to quickly identify important information within emails using branding guidelines and visual cues found in logos.  In recent years, users are often unsure about the authenticity of emails, and this has become a major issue for businesses fighting spam. BIMI gives email users access to information about a brand's identity. A company has complete control and freedom over what logo to attach to authenticated emails. Overall, BIMI acts as an additional layer of security to the existing email authentication process. What is BIMI, and how does it strengthen the security of your emails?  BIMI is a standa...

Microsoft Windows 10 and Windows 11 users are at risk of a new unpatched vulnerability that was recently disclosed publicly. As we reported last week, the vulnerability — SeriousSAM — allows attackers with low-level permissions to access Windows system files to perform a Pass-the-Hash (and potentially Silver Ticket) attack.  Attackers can exploit this vulnerability to obtain hashed passwords stored in the Security Account Manager (SAM) and Registry, and ultimately run arbitrary code with SYSTEM privileges. SeriousSAM vulnerability, tracked as CVE-2021-36934 , exists in the default configuration of Windows 10 and Windows 11, specifically due to a setting that allows 'read' permissions to the built-in user's group that contains all local users. As a result, built-in local users have access to read the SAM files and the Registry, where they can also view the hashes. Once the attacker has 'User' access, they can use a tool such as Mimikatz to gain access to the Re...

An infamous cross-platform crypto-mining malware has continued to refine and improve upon its techniques to strike both Windows and Linux operating systems by setting its sights on older vulnerabilities, while simultaneously latching on to a variety of spreading mechanisms to maximize the effectiveness of its campaigns. "LemonDuck, an actively updated and robust malware that's primarily known for its botnet and cryptocurrency mining objectives, followed the same trajectory when it adopted more sophisticated behavior and escalated its operations," Microsoft  said  in a technical write-up published last week. "Today, beyond using resources for its traditional bot and mining activities, LemonDuck steals credentials, removes security controls, spreads via emails, moves laterally, and ultimately drops more tools for human-operated activity." The malware is notorious for its ability to propagate rapidly across an infected network to facilitate information theft an...