Platform
windows
Component
amac-address-change
Fixed in
5.4.1
CVE-2019-25658 represents a local buffer overflow vulnerability discovered in Mac Address Change version 5.4. This flaw allows a malicious local user to trigger a denial of service (DoS) crash by providing excessively large data inputs into specific registration form fields, such as 'Your Name', 'Your Company', or 'Register Code'. The vulnerability impacts users running version 5.4 of the application, and as of the last update, no official patch has been released to address this issue.
CVE-2019-25658, affecting the MAC Address Change functionality, represents a local buffer overflow vulnerability with a CVSS score of 5.5. This flaw allows local attackers to crash the application by supplying oversized input to registration form fields. Specifically, pasting 212 bytes of data into the 'Your Name', 'Your Company', or 'Register Code' fields and clicking the Register button triggers a denial-of-service crash. The severity of this vulnerability lies in its ability to disrupt service, although the impact is limited to the local environment. It's important to note that there is currently no official fix available for this vulnerability, necessitating caution and the implementation of alternative mitigation measures.
CVE-2019-25658 is exploited by manipulating the input fields of the registration form. A local attacker can leverage this weakness simply by pasting a 212-byte string into any of the 'Your Name', 'Your Company', or 'Register Code' fields and then clicking the 'Register' button. The lack of proper input length validation allows the internal buffer to overflow, leading to memory corruption and ultimately the application crash. This attack requires no elevated privileges or advanced technical knowledge, making it a potential threat to non-expert users. The absence of an official fix means the risk persists until an update or patch is implemented.
Exploit Status
EPSS
0.02% (4% percentile)
CISA SSVC
CVSS Vector
Given that there is no official fix for CVE-2019-25658, mitigation focuses on reducing the risk of local exploitation. Restricting access to the affected software to trusted users with minimal privileges is recommended. Monitoring system activity for anomalous behavior, such as attempts to register with unusually long data, can help detect potential attacks. Additionally, implementing security policies that limit user ability to modify registration fields is advised. While it doesn't eliminate the vulnerability, these measures can hinder exploitation and reduce potential impact. Updating to newer software versions, once available, is the recommended definitive solution.
Actualice a una versión corregida del software Mac Address Change. Verifique el sitio web del proveedor (http://amac.paqtool.com/) para obtener la última versión. Como solución temporal, evite ingresar datos excesivamente largos en los campos del formulario de registro para prevenir el fallo.
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It means the software becomes inaccessible to legitimate users due to a failure.
No, this vulnerability requires local access to the system.
Disconnect the system from the network and seek help from a cybersecurity professional.
Restrict access to the software and monitor system activity.
There is currently no estimated date for an official fix.
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