Vulnerability Description
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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- http://4mhz.de/b64dec.html
- http://4mhz.de/download.php?file=b64dec-1-1-2.zip
- https://www.exploit-db.com/exploits/46625
- https://www.vulncheck.com/advisories/base64-decoder-local-buffer-overflow-seh-eg
FAQ
What is CVE-2019-25634?
CVE-2019-25634 is a vulnerability with a CVSS score of 8.4 (HIGH). 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 ...
How severe is CVE-2019-25634?
CVE-2019-25634 has been rated HIGH with a CVSS base score of 8.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-25634?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.