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CVE-2019-25634

HIGH

8.4

Descripcion

Base64 Decoder 1.1.2 contains a stack-based buffer overflow vulnerability that allows local attackers to execute arbitrary code by triggering a structured exception handler (SEH) overwrite. Attackers can craft a malicious input file that overflows a buffer, overwrites the SEH chain with a POP-POP-RET gadget address, and uses an egghunter payload to locate and execute shellcode for code execution.

Detalles CVE

Puntuacion CVSS v3.18.4

SeveridadHIGH

Vector CVSSCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vector de ataqueLOCAL

ComplejidadLOW

Privilegios requeridosNONE

Interaccion usuarioNONE

Publicado3/24/2026

Ultima modificacion3/24/2026

Fuentenvd

Avistamientos honeypot0

Debilidades (CWE)

CWE-787

Referencias

http://4mhz.de/b64dec.html(disclosure@vulncheck.com)

http://4mhz.de/download.php?file=b64dec-1-1-2.zip(disclosure@vulncheck.com)

https://www.exploit-db.com/exploits/46625(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/base64-decoder-local-buffer-overflow-seh-egghunter(disclosure@vulncheck.com)

Correlaciones IOC

Sin correlaciones registradas

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