Executive Summary

SysGauge 4.5.18 has a buffer overflow vulnerability in its proxy configuration handler. This means that when a local attacker inputs an excessively large string into the Proxy Server Host Name field within the Options menu, it causes the application to crash.

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Impact Analysis

This vulnerability can lead to a denial of service condition by crashing the SysGauge application. Local attackers can exploit this by providing an oversized string in the proxy configuration, causing the application to stop functioning properly.

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Executive Summary

CVE-2018-25313 is a buffer overflow vulnerability in SysGauge version 4.5.18's proxy configuration handler. It occurs when a local attacker supplies an excessively large string in the Proxy Server Host Name field within the Options menu. This causes the application to crash due to improper handling of the input size.

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Impact Analysis

This vulnerability can be exploited by a local attacker to cause a denial of service (DoS) by crashing the SysGauge application. The attacker does this by injecting a large payload into the Proxy Server Host Name field, which triggers a buffer overflow and crashes the program, potentially disrupting normal operations.

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Detection Guidance

This vulnerability can be detected by attempting to reproduce the crash condition locally on the affected SysGauge version 4.5.18. Specifically, by setting the Proxy Server Host Name field in the Options menu to an oversized string payload, such as a string of 3500 'A' characters, and observing if the application crashes.

There are no specific network detection commands since the vulnerability is local and triggered via the application interface. Detection involves manual testing or scripting to input large strings into the proxy configuration.

• Create a payload file or string with 3500 'A' characters.
• Open SysGauge 4.5.18 and navigate to the Options menu.
• Set the Proxy Server Host Name field to the large payload string.
• Save the configuration and observe if the application crashes, indicating the vulnerability is present.

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Mitigation Strategies

Immediate mitigation steps include avoiding the use of the Proxy Server Host Name field in SysGauge 4.5.18 or ensuring that no oversized strings are entered into this field.

Since the vulnerability requires local access, restrict local access to trusted users only and monitor for any attempts to modify proxy settings.

Check for and apply any available patches or updates from the vendor that address this buffer overflow vulnerability.

If patching is not immediately possible, consider using application whitelisting or restricting execution of SysGauge 4.5.18 to prevent exploitation.

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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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