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CVE-2018-25295: Medium Vulnerability in ObserverIP Scan Tool

A medium-severity denial of service vulnerability has been identified in ObserverIP Scan Tool 1.4.0.1. Local attackers can exploit this flaw to crash the application by submitting excessively long strings. Immediate action is recommended to mitigate potential disruption.

MEDIUMCVSS 6.9 · Published April 26, 2026

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ObserverIP Scan Tool 1.4.0.1 contains a denial of service vulnerability that allows local attackers to crash the application by submitting an excessively long string in the IP input field. Attackers can paste a 2000-byte buffer of repeated characters into the IP field and trigger a search operation to cause an application crash. This vulnerability has been assigned a CVSS score of 6.9, indicating a medium severity level.

The ability to crash the application poses a risk to organizations that rely on this tool for network operations, as it could lead to temporary service disruptions. Organizations should prioritize patching immediately to prevent potential exploitation of this vulnerability.

As of the latest information, no public exploit has been confirmed, and the vulnerability status is marked as received. However, organizations are advised to remain vigilant and monitor for any updates regarding exploit availability.

In light of this vulnerability, organizations should conduct a thorough assessment of their use of the ObserverIP Scan Tool and implement necessary security measures to mitigate risks.

The following sections will provide detailed insights into the vulnerability, technical analysis, risk assessment, and remediation strategies.

Vulnerability Details

The denial of service vulnerability in ObserverIP Scan Tool is categorized under CWE-789, which relates to 'Excessive Data in Input Buffer'. This vulnerability is particularly concerning as it allows local attackers to crash the application, resulting in a denial of service.

The CVSS score of 6.9 indicates a medium severity level, suggesting that while the impact is significant, it may require local access to exploit. The attack vector for this vulnerability is classified as local, with low attack complexity and no required privileges or user interaction.

The vulnerability was published on April 26, 2026, and the status is currently received, indicating that further evaluations or patches may be forthcoming.

Technical Analysis

The root cause of this vulnerability stems from inadequate input validation within the ObserverIP Scan Tool. By allowing excessively long strings to be submitted without proper checks, the application becomes susceptible to crashing when the input exceeds expected limits.

The attack vector is local, meaning an attacker must have access to the system running the ObserverIP Scan Tool to exploit this vulnerability. The attack complexity is low, as it requires minimal effort to craft a payload that triggers the application crash.

No privileges are required to perform the attack, and no user interaction is needed. The impact on availability is high, as the application can become unresponsive, disrupting any ongoing operations.

Risk & Impact Analysis

Risk to organizations includes the potential for service disruption due to application crashes caused by this vulnerability. The blast radius can be significant for organizations that rely on the ObserverIP Scan Tool for critical operations. Organizations should address this vulnerability in their priority patch cycle to mitigate risks.

Given the CVSS score of 6.9, the urgency for remediation is classified as medium. Organizations should schedule remediation efforts to ensure that this vulnerability is addressed promptly.

Exploitation Status

Signal

Status

Known Exploit

No

Public PoC

No

Actively Exploited

No

Ransomware Use

No

Affected Versions

Currently, there are no specific affected versions listed. However, organizations using ObserverIP Scan Tool 1.4.0.1 should be aware that this version contains the vulnerability. For those without an available patch, it is recommended to monitor for updates from the vendor.

Mitigation & Remediation

Organizations should prioritize patching the ObserverIP Scan Tool to the latest version to mitigate this vulnerability. If a patch is not immediately available, consider implementing input validation controls to limit the size of input data. Additionally, organizations may explore penetration testing to identify similar vulnerabilities within your systems.

Detection Guidance

To detect potential exploitation of this vulnerability, organizations should monitor application logs for indicators of excessive input submissions. Behavioral anomalies related to application crashes, as well as network traffic patterns that may indicate attempts to exploit the vulnerability, should also be investigated.

AppSecure Threat Intelligence Insight

The identification of this denial of service vulnerability highlights the ongoing challenges organizations face regarding input validation. As applications become more complex, understanding the vulnerabilities associated with user inputs remains critical. Security teams should reinforce their efforts to conduct regular assessments and vulnerability management programs to ensure proactive identification and mitigation of such weaknesses.

Additionally, organizations can benefit from reviewing their incident response protocols to ensure they are equipped to handle similar denial of service attacks. Regular training and awareness for development teams can also enhance understanding of security practices.

For further insights into penetration testing methodologies, security testing best practices, and the latest trends in vulnerability management, organizations are encouraged to explore resources such as penetration testing methodology and vulnerability management program design to strengthen their security posture in the face of evolving threats.

Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.

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