JVN#50367052
EmFTP may insecurely load executable files
Overview
EmFTP provided by Emurasoft, Inc. may use unsafe methods for determining how to load executables (.exe)
Products Affected
- EmFTP Standard
- EmFTP Professional
Description
EmFTP contains a flaw when loading files, where an unitended executable file may be loaded when attempting to open a file without an extension. For example, if a text file named "exmaple" (without an extension) and an executable "example.exe" are in the same directory, attemtping to open the file "example" will result in the execution of "example.exe".
Impact
An attacker may execute arbitrary code with the privilege of the vulnerable application.
Solution
Apply a workaround
EmFTP development has ended. The developer recommends the following workaround.
When opening local files, do not use EmFTP. Use Run command or Windows Explorer.
References
JPCERT/CC Addendum
Vulnerability Analysis by JPCERT/CC
Analyzed on 2014.09.04 (CVSS Base Metrics)
| Measures | Severity | Description | ||
|---|---|---|---|---|
| Access Vector(AV) | Local (L) | Adjacent Network (A) | Network (N) | A vulnerability exploitable with network access means the vulnerable software is bound to the network stack and the attacker does not require local network access or local access. Such a vulnerability is often termed "remotely exploitable". |
| Access Complexity(AC) | High (H) | Medium (M) | Low (L) | Specialized access conditions exist. |
| Authentication(Au) | Multiple (M) | Single (S) | None (N) | Authentication is not required to exploit the vulnerability. |
| Confidentiality Impact(C) | None (N) | Partial (P) | Complete (C) | There is considerable informational disclosure. Access to some system files is possible, but the attacker does not have control over what is obtained, or the scope of the loss is constrained. |
| Integrity Impact(I) | None (N) | Partial (P) | Complete (C) | Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited. |
| Availability Impact(A) | None (N) | Partial (P) | Complete (C) | There is reduced performance or interruptions in resource availability. |
Base Score:5.1
Credit
Other Information
| JPCERT Alert | |
| JPCERT Reports | |
| CERT Advisory |
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| CPNI Advisory |
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| TRnotes |
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| CVE |
CVE-2014-3910 |
| JVN iPedia |
JVNDB-2014-000103 |