CVE-2014-2735

WinSCP 5.5.2.4130 Missing X.509 Validation

Severity Score

5.9

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

WinSCP before 5.5.3, when FTP with TLS is used, does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.

WinSCP anterior a 5.5.3, cuando FTP con TLS está utilizado, no verifica que el nombre del servidor coincide un nombre de dominio en el nombre común del sujeto (CN) o el campo subjectAltName del certificado X.509, lo que permite a atacantes man-in-the-middle falsificar servidores SSL a través de un certificado valido arbitrario.

WinSCP version 5.5.2.4130 does not checking the "Common Name" of an X.509 certificate when FTP with TLS is used.

*Credits: N/A

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2014-04-08 CVE Reserved
2014-04-16 CVE Published
2024-08-06 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (3)

URL	Tag	Source
http://winscp.net/eng/docs/history	X_refsource_confirm
http://winscp.net/tracker/show_bug.cgi?id=1152	X_refsource_confirm
http://www.securityfocus.com/archive/1/531847/100/0/threaded	Mailing List

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Winscp Search vendor "Winscp"		Winscp Search vendor "Winscp" for product "Winscp"				<= 5.5.2 Search vendor "Winscp" for product "Winscp" and version " <= 5.5.2"		-		Affected
Winscp Search vendor "Winscp"		Winscp Search vendor "Winscp" for product "Winscp"				5.5 Search vendor "Winscp" for product "Winscp" and version "5.5"		-		Affected
Winscp Search vendor "Winscp"		Winscp Search vendor "Winscp" for product "Winscp"				5.5.1 Search vendor "Winscp" for product "Winscp" and version "5.5.1"		-		Affected