Plattform
other
Komponente
myconnection-server
Behoben in
11.3.1
CVE-2023-42033 describes a Remote Code Execution (RCE) vulnerability in Visualware MyConnection Server. This flaw allows authenticated attackers to bypass authentication and execute arbitrary code on vulnerable systems. The vulnerability affects versions 11.3c through 11.3c and requires upgrading to a patched version to resolve the issue.
Successful exploitation of CVE-2023-42033 allows an attacker to gain complete control over the affected MyConnection Server instance. This could lead to data breaches, system compromise, and potential lateral movement within the network. The ability to bypass authentication significantly lowers the barrier to entry for attackers, making this vulnerability particularly concerning. An attacker could exfiltrate sensitive data stored within the server, modify configurations, or even use the server as a launchpad for further attacks against other systems on the network. The blast radius extends to any data or services reliant on the compromised MyConnection Server.
The vulnerability was publicly disclosed on 2024-05-03. Exploitation context is currently limited, but the bypass of authentication makes it a high-priority vulnerability. No public proof-of-concept (PoC) code has been widely reported as of the time of this writing, but the ease of exploitation suggests that PoCs are likely to emerge. Monitor CISA and vendor advisories for updates.
Organizations utilizing MyConnection Server for document management or collaboration are at risk. Specifically, deployments with weak authentication policies or those that allow unrestricted file uploads are particularly vulnerable. Shared hosting environments where multiple users share the same server instance are also at increased risk, as a compromise of one user could potentially lead to a compromise of the entire server.
• windows / server: Monitor event logs for unusual process creation events, particularly those involving file uploads or execution. Use Sysinternals Process Monitor to track file access patterns related to the MyConnection Server process.
• linux / server: Use auditd to monitor file access and modification events related to the MyConnection Server installation directory. Filter journalctl for errors or warnings related to file uploads.
• generic web: Monitor access logs for requests containing suspicious file extensions or unusual characters in the file path. Use curl to test file upload endpoints with various payloads to identify potential vulnerabilities.
• database (mysql, redis, mongodb, postgresql): N/A - This vulnerability does not directly impact database systems.
• other: Review Visualware's security advisories and documentation for specific detection signatures or recommendations.
disclosure
Exploit-Status
EPSS
1.61% (82% Perzentil)
CISA SSVC
CVSS-Vektor
The primary mitigation for CVE-2023-42033 is to upgrade to a patched version of Visualware MyConnection Server as soon as it becomes available. Until the upgrade can be performed, consider implementing strict file upload restrictions and input validation on the doPostUploadfiles endpoint. Web Application Firewalls (WAFs) configured to inspect and filter file upload requests can provide an additional layer of defense. Monitor server logs for suspicious file upload activity and unusual process execution. After upgrading, verify the fix by attempting a file upload with a specially crafted path designed to trigger the vulnerability; the upload should be rejected.
Actualizar a una versión parcheada de Visualware MyConnection Server que solucione la vulnerabilidad de recorrido de directorios. Consultar el sitio web del proveedor para obtener la última versión y las instrucciones de actualización.
Schwachstellenanalysen und kritische Warnungen direkt in deinen Posteingang.
CVE-2023-42033 is a Remote Code Execution vulnerability in Visualware MyConnection Server versions 11.3c–11.3c. It allows attackers to bypass authentication and execute arbitrary code.
If you are running MyConnection Server version 11.3c–11.3c, you are potentially affected by this vulnerability. Check with Visualware for confirmation and available patches.
The recommended fix is to upgrade to a patched version of MyConnection Server as soon as it is available from Visualware. Implement temporary workarounds if patching is not immediately possible.
While no public exploits are widely available, the ease of authentication bypass suggests a potential for rapid exploitation. Monitor threat intelligence feeds for updates.
Refer to Visualware's official security advisories and documentation on their website for the latest information and updates regarding CVE-2023-42033.
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