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.
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Thu, 14 Aug 2025 14:15:00 +0000
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Wed, 13 Aug 2025 20:45:00 +0000
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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 | |
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cvssV4_0
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2025-08-13T20:33:06.598Z
Updated: 2025-08-14T13:49:59.657Z
Reserved: 2025-08-11T18:15:05.776Z
Link: CVE-2012-10055

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

Status : Awaiting Analysis
Published: 2025-08-13T21:15:29.840
Modified: 2025-08-14T14:15:29.643
Link: CVE-2012-10055

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