Executive Summary

This vulnerability exists in xrdp, an open source RDP server, in versions up to 0.10.5. It is an out-of-bounds read vulnerability that occurs during the RDP capability exchange phase. Specifically, the issue happens because memory is accessed before the remaining buffer length is validated. A remote, unauthenticated attacker can exploit this by sending a specially crafted Confirm Active PDU.

Exploitation of this vulnerability can cause the xrdp process to crash (denial of service) or potentially allow the attacker to disclose sensitive information from the process memory.

This vulnerability was fixed in version 0.10.6 of xrdp.

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Impact Analysis

If exploited, this vulnerability can impact you by causing a denial of service, where the xrdp server process crashes and becomes unavailable.

Additionally, there is a risk of sensitive information disclosure from the process memory, which could lead to exposure of confidential data.

Since the attacker can be remote and unauthenticated, the risk is higher as no prior access is needed to trigger the vulnerability.

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Mitigation Strategies

To mitigate this vulnerability, you should upgrade xrdp to version 0.10.6 or later, where the issue has been fixed.

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Compliance Impact

The vulnerability in xrdp versions through 0.10.5 allows a remote unauthenticated attacker to potentially disclose sensitive information from process memory. Such a disclosure could impact compliance with data protection regulations like GDPR and HIPAA, which require safeguarding sensitive information against unauthorized access.

Additionally, the possibility of denial of service could affect system availability, which is also a consideration under these standards.

However, specific impacts on compliance depend on the context of deployment and whether the vulnerable versions are used in environments subject to these regulations.

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