CVEvulnerability
CVE-2012-10055
9.3 CRITICAL
Official page ↗
- Status
- Deferred
- Published
- 2025-08-13
- Last modified
- 2026-06-16
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 9.3 CRITICAL — CVSS:4.0/AV:N/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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Weaknesses
- CWE-134
Description
ComSndFTP FTP Server version 1.3.7 Beta contains a format string vulnerability in its handling of the USER command. By sending a specially crafted username containing format specifiers, a remote attacker can overwrite a hardcoded function pointer in memory (specifically WSACleanup from Ws2_32.dll). This allows the attacker to redirect execution flow and bypass DEP protections using a ROP chain, ultimately leading to arbitrary code execution. The vulnerability is exploitable without authentication and affects default configurations.
Related
Weakness · CWE (1)
- CWE-134 Use of Externally-Controlled Format String weakness
References
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/ftp/comsnd_ftpd_fmtstr.rb raw.githubusercontent.com
- https://web.archive.org/web/20120317214524/http://ftp.comsnd.com/ web.archive.org
- https://www.exploit-db.com/exploits/19024 www.exploit-db.com
- https://www.exploit-db.com/exploits/19177 www.exploit-db.com
- https://www.vulncheck.com/advisories/comsndftp-user-format-string-rce www.vulncheck.com
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/ftp/comsnd_ftpd_fmtstr.rb raw.githubusercontent.com
- https://www.exploit-db.com/exploits/19024 www.exploit-db.com
- https://www.exploit-db.com/exploits/19177 www.exploit-db.com