Kentico — CraftedSignal Threat Feedhttps://feed.craftedsignal.io/tags/kentico/Trending threats, MITRE ATT&CK coverage, and detection metadata — refreshed continuously.Hugoenhello@craftedsignal.iohello@craftedsignal.ioTue, 30 Jan 2024 12:00:00 +0000Kentico Xperience Path Traversal Vulnerability (CVE-2025-2749)https://feed.craftedsignal.io/briefs/2024-01-kentico-traversal/Tue, 30 Jan 2024 12:00:00 +0000hello@craftedsignal.iohttps://feed.craftedsignal.io/briefs/2024-01-kentico-traversal/Kentico Xperience contains a path traversal vulnerability (CVE-2025-2749) that could allow an authenticated user's Staging Sync Server to upload arbitrary data to path relative locations, potentially leading to remote code execution or data compromise.CVE-2025-2749 is a path traversal vulnerability affecting Kentico Xperience, a digital experience platform. This vulnerability allows an authenticated user, specifically one with access to the Staging Sync Server, to upload arbitrary data to path-relative locations on the server. The vulnerability stems from insufficient validation of file paths during the staging synchronization process. Successful exploitation of this vulnerability could lead to arbitrary file uploads, potentially overwriting critical system files or introducing malicious code. This could enable an attacker to achieve remote code execution, compromise sensitive data, or disrupt the availability of the Kentico Xperience instance. Due to the potential for significant impact, organizations using Kentico Xperience should apply mitigations as soon as possible.

Attack Chain

  1. An attacker gains valid credentials for a Kentico Xperience user account that has access to the Staging Sync Server.
  2. The attacker crafts a malicious payload containing a path traversal sequence (e.g., “../../../”) within the file path.
  3. The attacker initiates a staging synchronization process, sending the crafted payload to the Staging Sync Server.
  4. The Staging Sync Server, due to insufficient path validation, processes the payload and attempts to upload the data to the attacker-specified path.
  5. The system uploads the arbitrary data to an unintended location due to the path traversal vulnerability.
  6. If the uploaded file overwrites an existing executable, the attacker may achieve remote code execution.
  7. Alternatively, the uploaded file could contain a web shell allowing the attacker to execute commands on the server.
  8. The attacker exploits the uploaded web shell or executable to gain further access and compromise the system.

Impact

Successful exploitation of CVE-2025-2749 can lead to arbitrary file uploads on the Kentico Xperience server. This could result in several severe consequences, including remote code execution, data compromise, and denial of service. While the exact number of affected organizations is unknown, organizations in various sectors rely on Kentico Xperience for their web content management needs. If exploited, attackers could gain complete control over the affected systems, leading to significant financial and reputational damage.

Recommendation

  • Apply mitigations per vendor instructions, specifically the hotfixes available on the Kentico devnet portal to address CVE-2025-2749.
  • Follow applicable BOD 22-01 guidance for cloud services if the Kentico Xperience instance is hosted in a cloud environment.
  • Deploy the Sigma rule “Detect Kentico Staging Sync Path Traversal Attempt” to monitor for suspicious file uploads with path traversal sequences in web server logs.
  • Regularly review and audit user accounts with access to the Staging Sync Server to minimize the risk of compromised credentials.
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