CVE-2012-10055: critical vulnerability in ComSndFTP FTP Server
ComSndFTP v1.3.7 Beta USER Format String RCE
Published · Updated
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63Vexday Risk Score
Patch soon. It has a working public exploit.
ssvc Attendcvss 9.3epss 2.6%
from disclosure to weaponsame day
Published on NVDAug 13
metasploitJun 8
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.
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
Affected products
ComSndFTP · FTP Serverpublic PoCs found — 3
cve_referenceraw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/ftp/comsnd_ftpd_fmtstr.rbunverifiedcve_referencewww.exploit-db.com/exploits/19024unverifiedcve_referencewww.exploit-db.com/exploits/19177unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/ftp/comsnd_ftpd_fmtstr.rbhttps://web.archive.org/web/20120317214524/http://ftp.comsnd.com/https://www.exploit-db.com/exploits/19024https://www.exploit-db.com/exploits/19177https://www.vulncheck.com/advisories/comsndftp-user-format-string-rce