A vulnerability was identified in Totolink LR350 9.3.5u.6369_B20220309. This affects the function setWiFiEasyCfg of the file /cgi-bin/cstecgi.cgi. Such manipulation of the argument ssid leads to buffer overflow. It is possible to launch the attack remotely. The exploit is publicly available and might be used.
The CVSS score of 7.4 indicates a high severity level, reflecting the significant impact this vulnerability could have on organizational security. Given the nature of the vulnerability, the risk to organizations includes potential unauthorized access, data manipulation, or service disruption.
Organizations should prioritize patching immediately. The exploitation status indicates that a proof-of-concept is available, which further increases the urgency for remediation.
Defenders must ensure that their Totolink LR350 devices are updated to the latest firmware version to mitigate risks associated with this vulnerability.
Vulnerability Details
The vulnerability in question allows for a buffer overflow via the function setWiFiEasyCfg in the Totolink LR350 firmware. The CVSS score of 7.4 signifies a high severity level, impacting confidentiality, integrity, and availability.
Affected product: Totolink LR350 Firmware version 9.3.5u.6369_B20220309. This vulnerability is classified under CWE-119 and CWE-120.
Technical Analysis
The root cause of this vulnerability is a flaw in how the firmware handles user input during the configuration process. The attack vector is network-based, with low attack complexity, requiring only low privileges and no user interaction.
The impacts are severe, as attackers may leverage this flaw to execute arbitrary code, leading to a complete compromise of the device and potential access to the network.
Risk & Impact Analysis
The real-world deployment risk is significant, as this vulnerability could allow attackers to gain control over the device remotely. Organizations should assess the blast radius, as compromised devices could lead to further attacks within the network.
Given the high CVSS score and the availability of exploitable code, organizations must act swiftly to mitigate this risk.
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected version of Totolink LR350 firmware is 9.3.5u.6369_B20220309. Organizations should ensure they are using the latest patches to mitigate this vulnerability.
Mitigation & Remediation
To remediate this vulnerability, organizations should apply the latest firmware updates from Totolink. Further, implementing network segmentation and strict access controls can help limit exposure.
For a comprehensive security assessment, organizations can consider utilizing penetration testing services to identify additional vulnerabilities.
Detection Guidance
Organizations should monitor logs for unusual activity related to configuration changes, especially involving the setWiFiEasyCfg function. Behavioral anomalies should also be tracked to identify potential exploitation attempts.
AppSecure Threat Intelligence Insight
This vulnerability underscores the importance of securing network devices, particularly those that are remotely accessible. As exploitation techniques evolve, organizations must stay vigilant.
Security teams should regularly review their vulnerability management programs and ensure they are prepared for similar vulnerabilities in the future. Utilizing resources such as vulnerability management best practices can provide valuable guidance.
Additionally, maintaining an understanding of common penetration testing methodologies can enhance security posture.
Finally, organizations should invest in continuous security testing practices to proactively identify vulnerabilities before they can be exploited.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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