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Buffer Overflow in Allok soft WMV to AVI MPEG DVD WMV Converter 4.6.1217 License Name Field
CVE-2018-25314 is a local buffer overflow vulnerability in Allok soft WMV to AVI MPEG DVD WMV Converter version 4.6.1217. The flaw is triggered by supplying an oversized string to the application's License Name field. According to the provided content, the overflow can be exploited using shellcode together with a structured exception handler (SEH) overwrite technique, resulting in arbitrary code execution in the context of the vulnerable process.
What it means and what to do now: patch path, interim mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
Successful exploitation allows a local attacker to execute arbitrary code with the privileges of the affected application. Given the stated CVSS vectors and description, compromise can result in high impact to confidentiality, integrity, and availability of the local system within the security context of the application.
If you can’t patch tonight, do this now.
Restrict local access to systems where the software is installed, prevent untrusted users from interacting with the application, and avoid entering or importing untrusted data into the License Name field. Application allowlisting, endpoint exploit mitigations, and monitoring for crashes or abnormal execution of the converter may reduce exposure. Because the issue is local, limiting execution on shared systems is particularly relevant.
Patch, then assume compromise.
Upgrade to a fixed version if one is available from the vendor. If no patched release is available in the provided information, discontinue use of Allok soft WMV to AVI MPEG DVD WMV Converter 4.6.1217 and replace it with a supported alternative. Vendor guidance is not provided in the supplied content.
No public exploits tracked yet. Mallory keeps watching.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.