CVE-2019-25681
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.21%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 4.0
- 8.6 HIGHCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.21% probability · 11th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- xlightftpd/xlight ftp server
- Source
- disclosure@vulncheck.com
References
- https://www.exploit-db.com/exploits/46458Exploit, VDB Entry
- https://www.vulncheck.com/advisories/xlight-ftp-server-seh-overwrite-buffer-overflowThird Party Advisory
- https://www.xlightftpd.com/download/xlight.zipProduct
- https://www.xlightftpd.com/index.htmProduct
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.