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State-Sponsored Hackers Likely Exploited MS Exchange 0-Days Against ~10 Organizations

State-Sponsored Hackers Likely Exploited MS Exchange 0-Days Against ~10 Organizations

October 01, 2022Ravie Lakshmanan
Microsoft on Friday disclosed that a single activity group in August 2022 achieved initial access and breached Exchange servers by chaining the  two newly disclosed zero-day flaws  in a limited set of attacks aimed at less than 10 organizations globally. "These attacks installed the Chopper web shell to facilitate hands-on-keyboard access, which the attackers used to perform Active Directory reconnaissance and data exfiltration," the Microsoft Threat Intelligence Center (MSTIC)  said  in a new analysis. The weaponization of the vulnerabilities is expected to ramp up in the coming days, Microsoft further warned, as malicious actors co-opt the exploits into their toolkits, including deploying ransomware, due to the "highly privileged access Exchange systems confer onto an attacker." The tech giant attributed the ongoing attacks with medium confidence to a state-sponsored organization, adding it was already investigating these attacks when the Zero Day Initiative d
CISA Warns of Hackers Exploiting Critical Atlassian Bitbucket Server Vulnerability

CISA Warns of Hackers Exploiting Critical Atlassian Bitbucket Server Vulnerability

October 01, 2022Ravie Lakshmanan
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Friday  added  a recently disclosed critical flaw impacting Atlassian's Bitbucket Server and Data Center to the Known Exploited Vulnerabilities ( KEV ) catalog, citing evidence of active exploitation. Tracked as  CVE-2022-36804 , the issue relates to a command injection vulnerability that could allow malicious actors to gain arbitrary code execution on susceptible installations by sending a specially crafted HTTP request. Successful exploitation, however, banks on the prerequisite that the attacker already has access to a public repository or possesses read permissions to a private Bitbucket repository. "All versions of Bitbucket Server and Datacenter released after 6.10.17 including 7.0.0 and newer are affected, this means that all instances that are running any versions between 7.0.0 and 8.3.0 inclusive are affected by this vulnerability," Atlassian  noted  in a late August 2022 advisory. CISA did
New Malware Campaign Targeting Job Seekers with Cobalt Strike Beacons

New Malware Campaign Targeting Job Seekers with Cobalt Strike Beacons

September 30, 2022Ravie Lakshmanan
A social engineering campaign leveraging job-themed lures is weaponizing a years-old remote code execution flaw in Microsoft Office to deploy Cobalt Strike beacons on compromised hosts. "The payload discovered is a leaked version of a Cobalt Strike beacon," Cisco Talos researchers Chetan Raghuprasad and Vanja Svajcer  said  in a new analysis published Wednesday. "The beacon configuration contains commands to perform targeted process injection of arbitrary binaries and has a high reputation domain configured, exhibiting the redirection technique to masquerade the beacon's traffic." The malicious activity, discovered in August 2022, attempts to exploit the vulnerability  CVE-2017-0199 , a remote code execution issue in Microsoft Office, that allows an attacker to take control of an affected system. The entry vector for the attack is a phishing email containing a Microsoft Word attachment that employs job-themed lures for roles in the U.S. government and Publ
Microsoft Confirms 2 New Exchange Zero-Day Flaws Being Used in the Wild

Microsoft Confirms 2 New Exchange Zero-Day Flaws Being Used in the Wild

September 30, 2022Ravie Lakshmanan
Microsoft officially disclosed it investigating two zero-day security vulnerabilities impacting Exchange Server 2013, 2016, and 2019 following  reports of in-the-wild exploitation . "The first vulnerability, identified as  CVE-2022-41040 , is a Server-Side Request Forgery ( SSRF ) vulnerability, while the second, identified as  CVE-2022-41082 , allows remote code execution (RCE) when PowerShell is accessible to the attacker," the tech giant  said . The company also confirmed that it's aware of "limited targeted attacks" weaponizing the flaws to obtain initial access to targeted systems, but emphasized that authenticated access to the vulnerable Exchange Server is required to achieve successful exploitation. The attacks detailed by Microsoft show that the two flaws are stringed together in an exploit chain, with the SSRF bug enabling an authenticated adversary to remotely trigger arbitrary code execution. The Redmond-based company further emphasized that it
WARNING: New Unpatched Microsoft Exchange Zero-Day Under Active Exploitation

WARNING: New Unpatched Microsoft Exchange Zero-Day Under Active Exploitation

September 30, 2022Ravie Lakshmanan
Security researchers are warning of previously undisclosed flaws in fully patched Microsoft Exchange servers being exploited by malicious actors in real-world attacks to achieve remote code execution on affected systems. The advisory comes from Vietnamese cybersecurity company GTSC, which discovered the shortcomings as part of its security monitoring and incident response efforts in August 2022. The two vulnerabilities, which are formally yet to be assigned CVE identifiers, are being  tracked  by the Zero Day Initiative as  ZDI-CAN-18333  (CVSS score: 8.8) and  ZDI-CAN-18802  (CVSS score: 6.3). GTSC said that successful exploitation of the flaws could be abused to gain a foothold in the victim's systems, enabling adversaries to drop web shells and carry out lateral movements across the compromised network. "We detected web shells, mostly obfuscated, being dropped to Exchange servers," the company  noted . "Using the user-agent, we detected that the attacker use
5 Network Security Threats And How To Protect Yourself

5 Network Security Threats And How To Protect Yourself

September 26, 2022The Hacker News
Cybersecurity today matters so much because of everyone's dependence on technology, from collaboration, communication and collecting data to e-commerce and entertainment. Every organisation that needs to deliver services to their customers and employees must protect their IT 'network' - all the apps and connected devices from laptops and desktops to servers and smartphones. While traditionally, these would all live on one "corporate network," - networks today are often just made up of the devices themselves, and how they're connected: across the internet, sometimes via VPNs, to the homes and cafes people work from, to the cloud and data centres where services live. So what threats does this modern network face? Let's look at them in more detail. #1 Misconfiguration According to recent research by  Verizon , misconfiguration errors and misuse now make up 14% of breaches. Misconfiguration errors occur when configuring a system or application so that it&
CISA Warns of Hackers Exploiting Recent Zoho ManageEngine Vulnerability

CISA Warns of Hackers Exploiting Recent Zoho ManageEngine Vulnerability

September 23, 2022Ravie Lakshmanan
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Thursday  added  a recently disclosed security flaw in Zoho ManageEngine to its Known Exploited Vulnerabilities ( KEV ) Catalog, citing evidence of active exploitation. "Zoho ManageEngine PAM360, Password Manager Pro, and Access Manager Plus contain an unspecified vulnerability which allows for remote code execution," the agency said in a notice. The  critical vulnerability , tracked as  CVE-2022-35405 , is rated 9.8 out of 10 for severity on the CVSS scoring system, and was patched by Zoho as part of updates released on June 24, 2022. Although the exact nature of the flaw remains unknown, the India-based enterprise solutions company  said  it addressed the issue by removing the vulnerable components that could lead to the remote execution of arbitrary code. Zoho has also warned of the public availability of a proof-of-concept (PoC) exploit for the vulnerability, making it imperative that customers move
Researchers Disclose Critical Vulnerability in Oracle Cloud Infrastructure

Researchers Disclose Critical Vulnerability in Oracle Cloud Infrastructure

September 22, 2022Ravie Lakshmanan
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
15-Year-Old Unpatched Python Vulnerability Potentially Affects Over 350,000 Projects

15-Year-Old Unpatched Python Vulnerability Potentially Affects Over 350,000 Projects

September 22, 2022Ravie Lakshmanan
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 overwri
Hackers Targeting Unpatched Atlassian Confluence Servers to Deploy Crypto Miners

Hackers Targeting Unpatched Atlassian Confluence Servers to Deploy Crypto Miners

September 22, 2022Ravie Lakshmanan
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
Over 280,000 WordPress Sites Attacked Using WPGateway Plugin Zero-Day Vulnerability

Over 280,000 WordPress Sites Attacked Using WPGateway Plugin Zero-Day Vulnerability

September 14, 2022Ravie Lakshmanan
A zero-day flaw in the latest version of a WordPress premium plugin known as  WPGateway  is being actively exploited in the wild, potentially allowing malicious actors to completely take over affected sites. Tracked as  CVE-2022-3180  (CVSS score: 9.8), the issue is being weaponized to add a malicious administrator user to sites running the WPGateway plugin, WordPress security company Wordfence noted. "Part of the plugin functionality exposes a vulnerability that allows unauthenticated attackers to insert a malicious administrator," Wordfence researcher Ram Gall  said  in an advisory. WPGateway is billed as a means for site administrators to install, backup, and clone WordPress plugins and themes from a unified dashboard. The most common indicator that a website running the plugin has been compromised is the presence of an administrator with the username "rangex." Additionally, the appearance of requests to "//wp-content/plugins/wpgateway/wpgateway-webse
Apple Releases iOS and macOS Updates to Patch Actively Exploited Zero-Day Flaw

Apple Releases iOS and macOS Updates to Patch Actively Exploited Zero-Day Flaw

September 13, 2022Ravie Lakshmanan
Apple has released another round of security updates to address multiple vulnerabilities in iOS and macOS, including a new zero-day flaw that has been used in attacks in the wild. The issue, assigned the identifier  CVE-2022-32917 , is rooted in the Kernel component and could enable a malicious app to execute arbitrary code with kernel privileges. "Apple is aware of a report that this issue may have been actively exploited," the iPhone maker acknowledged in a brief statement, adding it resolved the bug with improved bound checks. An anonymous researcher has been credited with reporting the shortcoming. It's worth noting that CVE-2022-32917 is also the  second Kernel related zero-day flaw  that Apple has remediated in less than a month. Patches are available in versions  iOS 15.7, iPadOS 15.7 ,  iOS 16 ,  macOS Big Sur 11.7 , and  macOS Monterey 12.6 . The iOS and iPadOS updates cover iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generati
Why Vulnerability Scanning is Critical for SOC 2

Why Vulnerability Scanning is Critical for SOC 2

September 12, 2022The Hacker News
SOC 2 may be a voluntary standard, but for today's security-conscious business, it's a minimal requirement when considering a SaaS provider. Compliance can be a long and complicated process, but a scanner like  Intruder  makes it easy to tick the vulnerability management box. Security is critical for all organisations, including those that outsource key business operations to third parties like SaaS vendors and cloud providers. Rightfully so, since mishandled data – especially by application and network security providers – can leave organisations vulnerable to attacks, such as data theft, extortion and malware. But how secure are the third parties you've entrusted with your data? SOC 2 is a framework that ensures these service providers securely manage data to protect their customers and clients. For security-conscious businesses – and security should be a priority for every business today – SOC 2 is now a minimal requirement when considering a SaaS provider. What SOC
Hackers Exploit Zero-Day in WordPress BackupBuddy Plugin in ~5 Million Attempts

Hackers Exploit Zero-Day in WordPress BackupBuddy Plugin in ~5 Million Attempts

September 09, 2022Ravie Lakshmanan
A zero-day flaw in a WordPress plugin called  BackupBuddy  is being actively exploited, WordPress security company Wordfence has disclosed. "This vulnerability makes it possible for unauthenticated users to download arbitrary files from the affected site which can include sensitive information," it  said . BackupBuddy allows users to back up their entire WordPress installation from within the dashboard, including theme files, pages, posts, widgets, users, and media files, among others. The plugin is estimated to have around 140,000 active installations, with the flaw (CVE-2022-31474, CVSS score: 7.5) affecting versions 8.5.8.0 to 8.7.4.1. It's been addressed in version 8.7.5 released on September 2, 2022. The issue is rooted in the function called "Local Directory Copy" that's designed to store a local copy of the backups. According to Wordfence, the vulnerability is the result of an insecure implementation, which enables an unauthenticated threat acto
Critical RCE Vulnerability Affects Zyxel NAS Devices — Firmware Patch Released

Critical RCE Vulnerability Affects Zyxel NAS Devices — Firmware Patch Released

September 07, 2022Ravie Lakshmanan
Networking equipment maker Zyxel has released patches for a critical security flaw impacting its network-attached storage (NAS) devices. Tracked as  CVE-2022-34747  (CVSS score: 9.8), the issue relates to a "format string vulnerability" affecting NAS326, NAS540, and NAS542 models. Zyxel credited researcher Shaposhnikov Ilya for reporting the flaw. "A format string vulnerability was found in a specific binary of Zyxel NAS products that could allow an attacker to achieve unauthorized remote code execution via a crafted UDP packet," the company  said  in an advisory released on September 6. The flaw affects the following versions - NAS326 (V5.21(AAZF.11)C0 and earlier) NAS540 (V5.21(AATB.8)C0 and earlier), and NAS542 (V5.21(ABAG.8)C0 and earlier) The disclosure comes as Zyxel previously addressed local privilege escalation and authenticated directory traversal vulnerabilities ( CVE-2022-30526 and CVE-2022-2030 ) affecting its firewall products in July. In J
Google Releases Urgent Chrome Update to Patch New Zero-Day Vulnerability

Google Releases Urgent Chrome Update to Patch New Zero-Day Vulnerability

September 03, 2022Ravie Lakshmanan
Google on Friday shipped emergency fixes to address a security vulnerability in the Chrome web browser that it said is being actively exploited in the wild. The issue, assigned the identifier  CVE-2022-3075 , concerns a case of insufficient data validation in  Mojo , which refers to a collection of runtime libraries that provide a platform-agnostic mechanism for inter-process communication (IPC). An anonymous researcher has been credited with reporting the high-severity flaw on August 30, 2022. "Google is aware of reports that an exploit for CVE-2022-3075 exists in the wild," the internet giant  said , without delving into additional specifics about the nature of the attacks to prevent additional threat actors from taking advantage of the flaw. The latest update makes it the sixth zero-day vulnerability in Chrome that Google has resolved since the start of the year - CVE-2022-0609  - Use-after-free in Animation CVE-2022-1096  - Type confusion in V8 CVE-2022-1364  -
Microsoft Discover Severe ‘One-Click’ Exploit for TikTok Android App

Microsoft Discover Severe 'One-Click' Exploit for TikTok Android App

September 01, 2022Ravie Lakshmanan
Microsoft on Wednesday disclosed details of a now-patched "high severity vulnerability" in the TikTok app for Android that could let attackers take over accounts when victims clicked on a malicious link. "Attackers could have leveraged the vulnerability to hijack an account without users' awareness if a targeted user simply clicked a specially crafted link," Dimitrios Valsamaras of the Microsoft 365 Defender Research Team  said  in a write-up. Successful exploitation of the flaw could have permitted malicious actors to access and modify users' TikTok profiles and sensitive information, leading to the unauthorized exposure of private videos. Attackers could also have abused the bug to send messages and upload videos on behalf of users. The issue, addressed in version 23.7.3, impacts two flavors of its Android app com.ss.android.ugc.trill (for East and Southeast Asian users) and com.zhiliaoapp.musically (for users in other countries except for India, wher
Apple Releases iOS Update for Older iPhones to Fix Actively Exploited Vulnerability

Apple Releases iOS Update for Older iPhones to Fix Actively Exploited Vulnerability

September 01, 2022Ravie Lakshmanan
Apple on Wednesday backported security updates to older iPhones, iPads, and iPod touch devices to address a  critical security flaw  that has been actively exploited in the wild. The shortcoming, tracked as  CVE-2022-32893  (CVSS score: 8.8), is an out-of-bounds write issue affecting WebKit that could lead to arbitrary code execution when processing maliciously crafted web content. WebKit is the browser engine that powers Safari and every other third-party browser available on iOS and iPadOS, meaning a flaw uncovered in the platform poses a security risk to users of Google Chrome, Mozilla Firefox, and Microsoft Edge as well. The tech giant said it fixed the bug with improved bounds checking. An anonymous researcher has been credited for reporting the vulnerability. The iOS 12.5.6 update is available for iPhone 5s, iPhone 6, iPhone 6 Plus, iPad Air, iPad mini 2, iPad mini 3, and iPod touch (6th generation). "iOS 12 is not impacted by CVE-2022-32894," Apple  noted  in it
Google Launches New Open Source Bug Bounty to Tackle Supply Chain Attacks

Google Launches New Open Source Bug Bounty to Tackle Supply Chain Attacks

August 31, 2022Ravie Lakshmanan
Google on Monday introduced a new bug bounty program for its open source projects, offering payouts anywhere from $100 to $31,337 (a reference to  eleet or leet ) to secure the ecosystem from  supply chain attacks . Called the Open Source Software Vulnerability Rewards Program (OSS VRP), the offering is one of the first open source-specific vulnerability programs. With the tech giant the maintainer of major projects such as Angular, Bazel, Golang, Protocol Buffers, and Fuchsia, the program aims to reward vulnerability discoveries that could otherwise have a significant impact on the larger open source landscape.  Other projects managed by Google and hosted on public repositories such as GitHub as well as the third-party dependencies that are included in those projects are also eligible. Submissions  from bug hunters are expected to meet the following criteria - Vulnerabilities that lead to supply chain compromise Design issues that cause product vulnerabilities Other security
CISA Adds 10 New Known Actively Exploited Vulnerabilities to its Catalog

CISA Adds 10 New Known Actively Exploited Vulnerabilities to its Catalog

August 29, 2022Ravie Lakshmanan
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Friday added 10 new actively exploited vulnerabilities to its  Known Exploited Vulnerabilities (KEV) Catalog , including a high-severity security flaw affecting industrial automation software from Delta Electronics. The issue, tracked as  CVE-2021-38406  (CVSS score: 7.8), impacts DOPSoft 2 versions 2.00.07 and prior. A successful exploitation of the flaw may lead to arbitrary code execution. "Delta Electronics DOPSoft 2 lacks proper validation of user-supplied data when parsing specific project files (improper input validation) resulting in an out-of-bounds write that allows for code execution," CISA said in an alert. It's worth noting that CVE-2021-38406 was originally disclosed as part of an industrial control systems (ICS) advisory  published  in September 2021. However, there are no patches that address the vulnerability, with CISA noting that the "impacted product is end-of-life and shoul
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