Executive Summary

CVE-2018-25244 is a denial of service vulnerability in Microsoft Eco Search version 1.0.2.0 and earlier. It occurs when a local attacker submits an excessively long string—specifically, a buffer of 950 or more characters—into the search bar and initiates a search operation. This causes the application to crash due to a buffer overflow.

The vulnerability is classified under CWE-1312, indicating missing protection for mirrored regions in the on-chip fabric firewall.

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Compliance Impact

The provided information does not specify any direct impact of this vulnerability on compliance with common standards and regulations such as GDPR or HIPAA.

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Mitigation Strategies

To mitigate the denial of service vulnerability in Microsoft Eco Search 1.0.2.0, avoid submitting excessively long strings (950 or more characters) to the search functionality.

Restrict local access to the application to prevent attackers from exploiting the vulnerability by pasting large buffers into the search bar.

Monitor for any updates or patches from Microsoft addressing this issue and apply them as soon as they become available.

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Impact Analysis

This vulnerability allows a local attacker to crash the Microsoft Eco Search application by submitting a very long input string to the search functionality. The impact is a denial of service, meaning the application becomes unavailable or stops functioning properly until restarted.

Since the attack requires local access and no privileges or user interaction, it could disrupt normal use of the application for legitimate users, potentially causing loss of productivity or interruption of service.

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Detection Guidance

This vulnerability can be detected by attempting to reproduce the crash condition locally on the affected Microsoft Eco Search application version 1.0.2.0 or earlier.

Specifically, an attacker or tester can create a payload consisting of 950 or more characters (e.g., 950 "A" characters) and paste it into the search bar of the application, then initiate a search operation to see if the application crashes.

A simple way to generate such a payload is by using a command or script to create a file with 950 characters, for example using Python:

• python -c "print('A'*950)" > PoC.txt

Then, copy the contents of PoC.txt and paste it into the search bar of the Eco Search application and execute the search to observe if the application crashes, indicating the presence of the vulnerability.

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