In a recent revelation, cybersecurity experts from Hunters’ Team Axon have unearthed a significant design flaw within Google Workspace’s Domain-Wide delegation feature. Termed “DeleFriend,” this flaw poses a serious threat as it enables the exploitation of existing delegations, potentially leading to unauthorized access and the escalation of privileges within Workspace APIs, all without the need for Super Admin privileges.
Despite being responsibly disclosed to Google as part of the Bug Hunters program in August 2023, the flaw remains active, raising concerns about the continued vulnerability of Google Workspace. To aid in detection and reduce the risks associated with DeleFriend’s exploitation, Team Axon has developed a proof-of-concept tool, featured in a comprehensive blog post. This tool aims to assist organizations in identifying misconfigurations within their Workspace settings, offering a proactive approach to thwart potential attacks leveraging this flaw. The research paper accompanying this discovery provides a deep dive into the Domain-Wide delegation feature, outlining its intricate workings and highlighting the potential for malicious exploitation, emphasizing the urgency for organizations to fortify their defenses.
The research paper not only elucidates the technical intricacies of the flaw but also offers actionable insights in the “Let’s go hunting” section. This segment of the paper outlines comprehensive threat hunting techniques and best practices to mitigate the risks associated with Domain-Wide delegation attacks. By delving into detection methodologies and proposing defensive strategies, this resource aims to empower organizations in safeguarding their systems against potential exploits stemming from this critical flaw in Google Workspace.
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