CVE-2017-16927 : Vulnerability Insights and Analysis

Xrdp through version 0.9.4 is affected by a vulnerability in the sesman/libscp/libscp_v0.c file, allowing local users to potentially cause a denial of service or other unspecified consequences.

Understanding CVE-2017-16927

This CVE entry describes a vulnerability in the session manager of Xrdp that could be exploited by local users.

What is CVE-2017-16927?

The sesman/libscp/libscp_v0.c file in the session manager of Xrdp through version 0.9.4 contains the scp_vos_accept function, which can be manipulated by local users to cause a denial of service or other consequences through a crafted input stream.

The Impact of CVE-2017-16927

The vulnerability could lead to a denial of service, buffer overflow, application crash, or other unspecified impacts when exploited by local users.

Technical Details of CVE-2017-16927

Xrdp vulnerability details and affected systems.

Vulnerability Description

The scp_v0s_accept function in sesman/libscp/libscp_v0.c in the session manager in Xrdp through 0.9.4 uses an untrusted integer as a write length, enabling local users to cause a denial of service or other impacts via a crafted input stream.

Affected Systems and Versions

Product: N/A
Vendor: N/A
Versions affected: All versions up to 0.9.4

Exploitation Mechanism

The vulnerability can be exploited by local users manipulating the scp_vos_accept function through a crafted input stream.

Mitigation and Prevention

Steps to mitigate and prevent the CVE-2017-16927 vulnerability.

Immediate Steps to Take

Apply the security update provided by Xrdp promptly.
Monitor for any unusual activities on the affected systems.

Long-Term Security Practices

Regularly update and patch Xrdp and other software to prevent vulnerabilities.
Implement the principle of least privilege to limit user access.

Patching and Updates

Ensure all systems running Xrdp are updated with the latest security patches.