CVE-2018-20177 : Vulnerability Insights and Analysis

This CVE-2018-20177 article provides insights into an Integer Overflow vulnerability in rdesktop versions up to v1.8.3, leading to a Heap-Based Buffer Overflow and potential remote code execution.

Understanding CVE-2018-20177

This CVE-2018-20177 vulnerability involves an Integer Overflow in the rdesktop software, impacting versions up to v1.8.3.

What is CVE-2018-20177?

The presence of an Integer Overflow in rdesktop versions up to v1.8.3 causes a Heap-Based Buffer Overflow in the rdp_in_unistr() function. This, in turn, causes memory corruption and potentially allows for remote code execution.

The Impact of CVE-2018-20177

The vulnerability can result in memory corruption and potentially enable attackers to execute remote code on affected systems.

Technical Details of CVE-2018-20177

This section delves into the technical aspects of the CVE-2018-20177 vulnerability.

Vulnerability Description

rdesktop versions up to and including v1.8.3 contain an Integer Overflow that leads to a Heap-Based Buffer Overflow in the function rdp_in_unistr(), resulting in memory corruption and potentially remote code execution.

Affected Systems and Versions

Product: n/a
Vendor: n/a
Versions affected: up to v1.8.3

Exploitation Mechanism

The vulnerability is exploited through crafted input that triggers the Integer Overflow, leading to the Buffer Overflow and subsequent memory corruption.

Mitigation and Prevention

To address CVE-2018-20177, follow these mitigation strategies:

Immediate Steps to Take

Update rdesktop to a patched version.
Implement network security measures to restrict access to vulnerable systems.

Long-Term Security Practices

Regularly update software and apply security patches.
Conduct security assessments to identify and remediate vulnerabilities.

Patching and Updates

Stay informed about security advisories from rdesktop and relevant vendors.