Get expert threat analysis weekly. Sign up to receive our Threat Briefing:
Date: 10/04/2023
A recent phishing campaign leveraging an open redirection vulnerability on Indeed’s job search platform has been discovered. Open redirection happens when an application (by design or unintentionally) causes redirection to an untrusted external domain. The phishing campaign aims to steal Microsoft credentials by redirecting victims to a fake Microsoft login page.
This phishing campaign primarily targets executives and C-level individuals in various sectors. Victims receive phishing emails containing links that appear to lead to indeed.com. However, clicking these links redirects to a fake Microsoft login page. The phishing kit (EvilProxy framework) used in the attack acts as a reverse proxy to intercept credentials and session cookies, potentially allowing attackers to bypass multifactor authentication mechanisms.
Individuals and organizations should exercise caution and verify links and emails, even from reputable sources. Implementing robust email security measures and strong multifactor authentication (MFA) methods, such as number matching, can strengthen defenses against such phishing campaigns. Security awareness training and social engineering tests are recommended on a regular basis.
For a complimentary consultation, fill out the form below and we will be in touch soon.
A proof-of-concept exploit for a critical vulnerability affecting Progress Software’s WS_FTP Server file-sharing platform has been released. The proof-of-concept was released while customers were still in the process of patching, allowing for successful mass exploitation. The vulnerability is tracked as CVE-2023-40044 and is a .NET deserialization vulnerability in the Ad Hoc Transfer Module.
CVE-2023-40044 can be exploited from an unauthenticated perspective and allows for remote code execution on the underlying operating system via a simple HTTP request. While mass exploitation will be automated, attackers may leverage successful exploitation to establish persistence and launch manual attacks against targeted networks if remediation steps are not taken.
Progress Software has released fixes for CVE-2023-40044, and upgrading to the most recent version is recommended. Additionally, exploitation can be prevented by disabling the vulnerable Ad Hoc Transfer module. Exploited servers should be immediately quarantined and checked for persistence access and lateral movement attempts.
Sources
Microsoft recently issued emergency security updates software, such as Edge, Teams, and Skype, to address two zero-day vulnerabilities in open-source libraries. The first is CVE-2023-4863, which is a heap buffer overflow in the WebP code library, potentially leading to crashes or arbitrary code execution. The second vulnerability is CVE-2023-5217 and involves a heap buffer overflow in the VP8 encoding of the libvpx video codec library, with similar potential consequences.
Both vulnerabilities were observed being exploited in the wild, though very few details exist. However, exploitation that has been occurring could be related to spyware attacks. Generally speaking, such vulnerabilities could be exploited by a user visiting a malicious site or interacting with a malicious link or file. Note that vulnerabilities in browsers such as Edge could result in stolen browser information such as saved credentials or similar data.
Some applications should be updated automatically, but administrators should ensure this is occurring. Additionally, endpoints, and especially end-user systems, should be monitored and protected through Endpoint Detection & Response software. Additionally, vulnerability scanning should be completed periodically to ensure critical vulnerabilities are being addressed.
Sources
Exim developers released patches for multiple zero-day vulnerabilities affecting Exim mail servers. One vulnerability tracked as CVE-2023-42115 is due to an out-of-bounds write flaw in the SMTP service (listens on port 25) and can be exploited by a remote unauthenticated attacker.
Exploitation could result in code execution in the context of the SMTP service account. Note that exploitation is dependent on the use of external authentication on targeted servers. Exploitation can potentially be used to establish a foothold in a targeted environment and launch additional attacks.
Patches should be applied when they are available. If the vulnerable configuration is in use, monitor for indicators of compromise and restrict access to the mail service if detected. Note that widespread exploitation has not been observed. Generally speaking, external vulnerability scanning can be performed to identify public-facing services to understand the attack surface better and identify critical vulnerabilities.
Sources
If you need assistance with any of the Threats identified today or any other cybersecurity concerns, compliance issues or questions, please reach out through the contact button below. We stand ready to assist!
Offerings
Industries
Compliance
Copyright © 2023 GreyCastle Security. All Rights Reserved
800-403-8350Copyright © 2022 GreyCastle Security. All Rights Reserved
Ho Chin is Chief Financial Officer at GreyCastle Security. In this role, Ho leads Finance, HR, IT and Professional Development. As part of the executive leadership team, Ho works to establish the company’s overall strategy and ensure proper execution of the supporting initiatives pertaining to the above areas of responsibility.
Prior to joining GreyCastle Security, Ho led finance and administrative functions at multiple private equity and venture-backed portfolio companies across multiple industries. Ho holds a bachelor’s degree in Accounting from Pennsylvania State University in Centre County, Pennsylvania and a master’s degree in Business Administration from the Wharton School of Business at the University of Pennsylvania in Philadelphia, Pennsylvania.
Michael Stamas is an entrepreneur, board member, Vice President and a founder of GreyCastle Security. With more than two decades of experience in the technology sector, Mike pairs his management and business development skills with a deep understanding of cybersecurity. Mike brings a unique brand of risk-based advising to GreyCastle clients and prospects.
Mike holds certifications in numerous security and technology related areas, including the Department of Homeland Security and other security technologies like Symantec, Cisco and Microsoft.
Mike plays an active role in his community and serves as a board member and Vice President of InfraGard Albany as well as an advisory board position with the Capital Region YMCA.
Mike has been recognized for his numerous achievements through various honors including the Albany Business Review’s prestigious 40 Under 40 award.
Dan Kalil is Chief Executive Officer (CEO) and Board Chairman at GreyCastle Security. In this role, Dan provides vision, leadership and strategies that drive GreyCastle Security’s position as an industry leader. With an emphasis on customer success, Dan’s profitable growth model leverages a customer-centric business approach that balances employee wellbeing and social responsibility.
Prior to becoming CEO, Dan served as the company’s Chief Strategy Officer, during which he supported multiple acquisitions and helped the organization achieve substantial sales growth. In addition to serving as CEO at GreyCastle Security, Dan continues to hold the position of Chief Commercial Officer (CCO) at Assured information Security (AIS) in Rome, New York, a company he co-founded in 2001.
Over the course of the last 22 years, Dan has been committed to advancing the state of cybersecurity and has played an instrumental role in the identification and development of critical, next-generation cyber capabilities. He has held positions in almost every facet of cybersecurity, beginning as a computer forensic examiner and progressing through the management and executive leadership ranks. In addition to co-founding AIS, Dan has facilitated multiple cybersecurity startups, raised investment capital and has served in various lead and support roles toward the acquisition of five companies in the last eight years.
Dan has a bachelor’s degree in Cybersecurity and a master’s degree in Cybersecurity from Utica College in Utica, New York.
Dan Maynard serves as GreyCastle Security’s Chief Operating Officer, where he currently leads Sales, Marketing and Legal.
Dan has enjoyed a 30+ year career in the Information Technology and Telecommunications industry, during which time he has held various leadership positions for organizations such as Rochester Tel/RCI, Citizens Communications (Frontier), PAETEC Communications, IntegraOptics, tw telecom/Level3 and Centurylink.
In addition to various voice and data technology platforms, he possesses a strong background in leadership development, sales and marketing leadership, transformational leadership and strategic planning. Dan has a thirst for knowledge and as a committed lifelong learner, he encourages and supports professional development initiatives for his teams and continues his involvement with Vistage International.
Dan holds a bachelor’s degree in Biology from Lafayette College in Easton, Pennsylvania, where he was selected as a member of their Athletic Hall of Fame in 2016.
When not at work, Dan enjoys traveling, golfing, attending Utica Comets hockey games and relaxing in the Adirondacks on beautiful Canada Lake with family and friends.
Dan Didier is the Vice President of Solutions and board member at GreyCastle Security.
Dan has been a cybersecurity practitioner for more than 20 years and uses his knowledge and experience to develop cybersecurity solutions that ensure readiness and preparedness.
Dan received his bachelor’s degree in Telecommunications from SUNY Polytechnic Institute in Utica, New York, and graduated Summa Cum Laude with a master’s degree in Information Assurance from Norwich University in Northfield, Vermont.
Our Computer Incident Response Teams (CIRTs) have responded to hundreds of breaches, intrusions, malware infections, thefts, employee investigations, fraud cases and other incidents. Our highly-certified experts have extensive experience in command, coordination and correction of incidents in nearly every industry throughout North America, from local businesses to Fortune 500 international conglomerates.
800-403-8350Francesca LoPorto-Brandow is Director of Culture at GreyCastle Security. In this role, Francesca leads all social responsibility efforts and partnerships and develops effective strategies that promote organizational-wide behaviors and attitudes consistent with a culture of safety, inclusion, teamwork, motivation and high-performance.
Prior to this role, Francesca was Director of People & Culture at GreyCastle and with her leadership, the company’s culture has been recognized by Inc. Magazine as a Nationally recognized Best Workplace, Albany Business Review Best Places to Work and Albany Times Union Top Workplaces.
Before joining GreyCastle Security, Francesca worked as an OD consultant and focused on strategic culture change at The Kaleel Jamison Consulting Group, Inc. for more than six years. There, she facilitated client education sessions, coached leaders and teams, developed and executed consulting interventions and served as strategy project leader on various client engagements. Her work has taken her into Fortune 100 companies and across borders including Panama, Singapore and beyond.
Francesca is a Lean Six Sigma–certified Green Belt, a proud YWCA-GCR board member and in 2013, she coordinated and emceed the inaugural TEDx Troy—a livestream of TEDCity 2.0. Since 2012, she has coordinated and emceed the Troy 100 Forum, a biannual forum for government, religious and community leaders to discuss issues vital to the future of Troy, New York.
Bilingual in English and Italian, Francesca holds a bachelor’s degree in Management and Technology from the Rensselaer Polytechnic Institute’s Lally School of Management & Technology. She was awarded Cybersecurity Recruiter of the year North America in 2017 by the Cybersecurity Excellence Awards.
Jamie Aiello is Senior Vice President of Services and Product Management at GreyCastle Security. In this position, Jamie is responsible for leading a high performing and well-balanced team that is ultimately responsible for the identification, selection, execution and successful performance of our company’s diverse portfolio of cybersecurity offerings.
Prior to joining GreyCastle Security, Jamie has held leadership positions with Annese and Associates, ConvergeOne and BlueSky IT Partners with a focus on delivering cost effective information technology solutions for companies across multiple verticals.
Jamie holds a bachelor’s degree in Political Science from Le Moyne College in Syracuse, New York, a master’s degree in Business Administration from Gardner-Webb University in Boiling Springs, North Carolina and a master’s degree in Computer Information Systems from University of Phoenix in Phoenix, Arizona.
