WinSCP 5.x < 5.5.5 Multiple Vulnerabilities

High Nessus Plugin ID 78078

Synopsis

The remote Windows host has an application installed that is affected by multiple vulnerabilities.

Description

The WinSCP program installed on the remote host is version 4.3.8, 4.3.9, 4.4.0, or 5.x prior to 5.5.5. It therefore contains a bundled version of OpenSSL prior to 1.0.1i which is affected by the following vulnerabilities :

- A memory double-free error exists related to handling DTLS packets that allows denial of service attacks.
(CVE-2014-3505)

- An unspecified error exists related to handling DTLS handshake messages that allows denial of service attacks due to large amounts of memory being consumed.
(CVE-2014-3506)

- A memory leak error exists related to handling specially crafted DTLS packets that allows denial of service attacks. (CVE-2014-3507)

- An error exists related to 'OBJ_obj2txt' and the pretty printing 'X509_name_*' functions which leak stack data, resulting in an information disclosure. (CVE-2014-3508)

- An error exists related to 'ec point format extension' handling and multithreaded clients that allows freed memory to be overwritten during a resumed session.
(CVE-2014-3509)

- A NULL pointer dereference error exists related to handling anonymous ECDH cipher suites and crafted handshake messages that allow denial of service attacks against clients. (CVE-2014-3510)

- An error exists related to handling fragmented 'ClientHello' messages that allows a man-in-the-middle attacker to force usage of TLS 1.0 regardless of higher protocol levels being supported by both the server and the client. (CVE-2014-3511)

- A buffer overflow error exists related to handling Secure Remote Password protocol (SRP) parameters having unspecified impact. (CVE-2014-3512)

- A NULL pointer dereference error exists related to handling Secure Remote Password protocol (SRP) that allows a malicious server to crash a client, resulting in a denial of service. (CVE-2014-5139)

Solution

Upgrade to WinSCP version 5.5.5 or later.

See Also

https://winscp.net/eng/docs/history#5.5.5

https://www.openssl.org/news/openssl-1.0.1-notes.html

https://www.openssl.org/news/secadv/20140806.txt

https://www.openssl.org/news/vulnerabilities.html

Plugin Details

Severity: High

ID: 78078

File Name: winscp_5_5_5.nasl

Version: 1.7

Type: local

Agent: windows

Family: Windows

Published: 2014/10/07

Updated: 2018/11/15

Dependencies: 72387

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 9.3

Temporal Score: 6.9

Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/a:winscp:winscp

Required KB Items: installed_sw/WinSCP

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2014/08/21

Vulnerability Publication Date: 2014/08/06

Reference Information

CVE: CVE-2014-3505, CVE-2014-3506, CVE-2014-3507, CVE-2014-3508, CVE-2014-3509, CVE-2014-3510, CVE-2014-3511, CVE-2014-3512, CVE-2014-5139

BID: 69075, 69076, 69077, 69078, 69079, 69081, 69082, 69083, 69084