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SEH-based buffer overflow in Allok AVI to DVD SVCD VCD Converter 4.0.1217 License Name field
CVE-2018-25302 is a structured exception handling (SEH)-based buffer overflow in Allok AVI to DVD SVCD VCD Converter 4.0.1217. The flaw is triggered by supplying an overly long, malicious string to the application's License Name field in the registration interface. According to the provided content, the exploit payload can include junk data, an NSEH bypass, an SEH handler address, and shellcode. When the crafted input is pasted into the License Name field and the Register button is clicked, the overflow corrupts control flow via SEH overwrite and can lead to arbitrary code execution in the context of the application.
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 arbitrary code execution on the local system in the security context of the user running Allok AVI to DVD SVCD VCD Converter. Because the issue is an SEH-based stack buffer overflow, an attacker can redirect execution to attacker-controlled shellcode. The stated impact includes high confidentiality, integrity, and availability impact, meaning the attacker may be able to run arbitrary programs, access or modify data available to the user, and potentially crash the application or otherwise disrupt service.
If you can’t patch tonight, do this now.
Do not use the vulnerable 4.0.1217 release on systems where untrusted users can interact with the application. Restrict local access to the host, prevent untrusted users from launching or interacting with the software, and avoid pasting untrusted data into the License Name registration field. Standard exploit-hardening controls such as DEP, ASLR, and endpoint protection may increase exploitation difficulty, but the provided content does not confirm their effectiveness for this specific case.
Patch, then assume compromise.
Upgrade to a fixed version if one is available from the vendor. If no patched release is available, discontinue use of Allok AVI to DVD SVCD VCD Converter 4.0.1217 or replace it with a supported alternative. Vendor-side remediation would require correcting the unsafe handling of the License Name field by enforcing proper bounds checking and eliminating the SEH-overwrite condition during registration input processing.
No public exploits tracked yet. Mallory keeps watching.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.