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CVE-2020-24363: High Vulnerability in TP-Link TL-WA855RE

A high-severity vulnerability affects TP-Link TL-WA855RE devices, allowing unauthenticated attackers on the same network to reset administrative credentials. Immediate action is required to mitigate risks.

HIGHKnown ExploitedCVSS 8.8 · Published August 31, 2020

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The CVE-2020-24363 vulnerability affects TP-Link TL-WA855RE V5 devices, allowing unauthenticated attackers on the same network to exploit a flaw that permits them to submit a TDDP_RESET POST request for a factory reset. This action can lead to unauthorized changes in administrative credentials, compromising the device's security.

With a CVSS score of 8.8, this vulnerability is classified as high severity, indicating significant risk. Organizations should recognize the potential impact on their networks and the importance of addressing this issue promptly.

Risk to organizations includes unauthorized access to sensitive device settings and the potential for broader network vulnerabilities. Attackers may leverage this vulnerability to reset passwords and gain control over the device.

Organizations should prioritize patching immediately to prevent exploitation and ensure network security.

Vulnerability Details

The official description for CVE-2020-24363 states that TP-Link TL-WA855RE V5 devices allow unauthenticated attackers to reset the device via a TDDP_RESET POST request. The vulnerability primarily stems from missing authentication mechanisms for critical functions.

This vulnerability scores 8.8 on the CVSS v3.1 scale, categorized as high severity. The attack vector is through an adjacent network, making it essential for organizations to take precautions, particularly in environments where network segmentation is inadequate.

The vulnerability affects versions of the firmware prior to 200731. As of the publication date on August 31, 2020, organizations utilizing affected devices must act swiftly to mitigate risks.

Technical Analysis

The root cause of CVE-2020-24363 is inadequate access control, which allows attackers to reset devices without proper authentication. The attack can be executed without any privileges or user interaction, presenting a high risk to network security.

The attack complexity is low, meaning that the vulnerability can be exploited easily by an attacker on the same network. The impact on confidentiality, integrity, and availability is high, indicating that successful exploitation can lead to significant data loss or service interruption.

Risk & Impact Analysis

The potential for a compromised device poses a significant risk to organizations, particularly in environments where devices are interconnected. The ability for attackers to reset administrative credentials can lead to unauthorized configuration changes and further exploitation of network resources.

Organizations that fail to address this vulnerability may face unauthorized access to sensitive information, operational disruptions, and damage to their overall security posture. The urgency for remediation is underscored by the high CVSS score and the presence of this vulnerability in the Known Exploited Vulnerabilities catalog.

Given the critical nature of this vulnerability, organizations should prioritize patching immediately and monitor their networks for any signs of exploitation.

Signal

Status

Known Exploit

Yes

Public PoC

No

Actively Exploited

Yes

Ransomware Use

No

Affected Versions

All versions of TP-Link TL-WA855RE firmware prior to 200731 are affected by this vulnerability. Users are advised to check their firmware versions and apply necessary updates.

Mitigation & Remediation

To mitigate the risks associated with CVE-2020-24363, organizations should apply firmware updates provided by TP-Link. Detailed instructions can be found on the TP-Link support page. If updates are not available or devices are end-of-life, organizations should consider discontinuing use.

Detection Guidance

Monitoring network traffic for unusual TDDP_RESET POST requests can help identify exploitation attempts. Additionally, organizations should audit access controls and log activities related to administrative changes.

AppSecure Threat Intelligence Insight

The long-term significance of CVE-2020-24363 lies in its demonstration of the risks associated with inadequate authentication in network devices. Security teams should take note of this vulnerability as it highlights the importance of implementing robust access controls.

Organizations are encouraged to adopt a proactive security posture, which includes regular firmware updates and vulnerability assessments. For further guidance on securing network devices, consider reviewing our vulnerability management program and the latest trends in cyber threats.

Organizations should also educate employees on recognizing potential threats associated with network devices, ensuring a comprehensive approach to security.

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

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