Advisories

Xlight FTP Server 3.9.1 SEH Overwrite Buffer Overflow

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severity
high
date
Affecting
  • Xlight <= 3.9.1

CWE
  • CWE-787 Out-of-bounds Write
CVSS
8.6
CVSS V4 Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
Logan Whitmire
Description
Xlight FTP Server 3.9.1 contains a structured exception handler (SEH) overwrite vulnerability that allows local attackers to crash the application and overwrite SEH pointers by supplying a crafted buffer string. Attackers can inject a 428-byte payload through the program execution field in virtual server configuration to trigger a buffer overflow that corrupts the SEH chain and enables potential code execution.

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