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.
Advisories
Source ID Title
EUVD EUVD EUVD-2012-6606 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.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Sat, 16 Aug 2025 21:45:00 +0000

Type Values Removed Values Added
First Time appeared Comsndftp
Comsndftp ftp Server
Vendors & Products Comsndftp
Comsndftp ftp Server

Thu, 14 Aug 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 13 Aug 2025 20:45:00 +0000

Type Values Removed Values Added
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.
Title ComSndFTP v1.3.7 Beta USER Format String RCE
Weaknesses CWE-134
References
Metrics cvssV4_0

{'score': 9.3, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2025-08-14T13:49:59.657Z

Reserved: 2025-08-11T18:15:05.776Z

Link: CVE-2012-10055

cve-icon Vulnrichment

Updated: 2025-08-14T13:49:50.067Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-08-13T21:15:29.840

Modified: 2025-08-14T14:15:29.643

Link: CVE-2012-10055

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-08-16T21:41:19Z