CyberSecure Specialist

US, Australia Issue Warning Over Access Control Vulnerabilities in Web Applications

New guidance from the Australian Cyber Security Centre (ACSC), the US Cybersecurity and Infrastructure Security Agency (CISA), and National Security Agency (NSA) warns developers, vendors, and organizations of access control vulnerabilities in web applications. Described as insecure direct object reference (IDOR) issues, they allow threat actors to read or tamper with sensitive data via application programming interface (API) requests that include the identifier of a valid user. These requests are successful because the authentication or…

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In Other News: Data Breach Cost Rises, Russia Targets Diplomats, Tracker Alerts in Android 

SecurityWeek is publishing a weekly cybersecurity roundup that provides a concise compilation of noteworthy stories that might have slipped under the radar. We provide a valuable summary of stories that may not warrant an entire article, but are nonetheless important for a comprehensive understanding of the cybersecurity landscape. Each week, we will curate and present a collection of noteworthy developments, ranging from the latest vulnerability discoveries and emerging attack techniques to significant policy changes and…

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Exploitation of Recent Citrix ShareFile RCE Vulnerability Begins

Threat intelligence company Greynoise says it has observed the first attempts to exploit a recent critical remote code execution (RCE) vulnerability in Citrix ShareFile. A popular cloud-based file-sharing and collaboration solution, ShareFile allows users to store files in their own data centers, via a storage zones controller (or storage center), a .NET web application running under Internet Information Services (IIS). The vulnerability, tracked as CVE-2023-24489 (CVSS score of 9.1), was the result of errors leading…

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CISA Releases Malware Analysis Reports on Barracuda Backdoors

CISA has published three malware analysis reports on malware variants associated with exploitation of CVE-2023-2868. CVE-2023-2868 is a remote command injection vulnerability affecting Barracuda Email Security Gateway (ESG) Appliance, versions 5.1.3.001-9.2.0.006. It was exploited as a zero day as early as October 2022 to gain access to ESG appliances. According to industry reporting, the actors exploited the vulnerability to gain initial access to victim systems and then implanted backdoors to establish and maintain persistence. CISA…

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Ivanti Releases Security Updates for EPMM to address CVE-2023-35081

Ivanti has identified and released patches for a directory traversal vulnerability (CVE-2023-35081, CWE-22) in Ivanti Endpoint Manager Mobile (EPMM). This vulnerability allows an attacker with EPMM administrator privileges to write arbitrary files with the operating system privileges of the EPMM web application server. The attacker could then execute the uploaded file, for example, a web shell. To gain EPMM administrator privileges, the attacker could exploit CVE-2023-35078 on an unpatched system. Ivanti reports active exploitation of…

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S3 Ep145: Bugs With Impressive Names!

by Paul Ducklin ONE WEEK, TWO BWAINS Apple patches two zero-days, one for a second time. How a 30-year-old cryptosystem got cracked. All your secret are belong to Zenbleed. Remembering those dodgy PC/Mac ads. No audio player below? Listen directly on Soundcloud. With Doug Aamoth and Paul Ducklin. Intro and outro music by Edith Mudge. You can listen to us on Soundcloud, Apple Podcasts, Google Podcasts, Spotify and anywhere that good podcasts are found. Or…

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US Senator Wyden Accuses Microsoft of ‘Cybersecurity Negligence’

Oregon senator Ron Wyden wants the U.S. government to hold Microsoft responsible for what he describes as “negligent cybersecurity practices” that enabled “a successful Chinese espionage campaign against the United States government.” In a strongly worded letter to Attorney General Merrick Garland and the heads of CISA and the FTC, Wyden said the software giant “bears significant responsibility” for the M365 cloud hack that started with the theft of a Microsoft encryption key. “Since the…

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CISA and Partners Release Joint Cybersecurity Advisory on Preventing Web Application Access Control Abuse

The Australian Signals Directorate’s Australian Cyber Security Centre (ACSC), the Cybersecurity and Infrastructure Security Agency (CISA), and the National Security Agency (NSA) are releasing a joint Cybersecurity Advisory (CSA), Preventing Web Application Access Control Abuse, to warn vendors, designers, developers, and end-user organizations of web applications about insecure direct object reference (IDOR) vulnerabilities. These vulnerabilities are frequently exploited by malicious actors in data breach incidents and have resulted in the compromise of personal, financial, and…

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