stunnel 4.21 - 4.54 Multiple Vulnerabilities

High Nessus Plugin ID 65690


The remote Windows host contains a program that is affected by multiple vulnerabilities.


The version of stunnel installed on the remote host is a version after 4.21 and prior to 4.55. It is, therefore, affected by the following vulnerabilities :

- The bundled version of OpenSSL contains an error related to CBC-mode and timing that allows an attacker to recover plaintext from encrypted communications.

- A buffer overflow condition exists related to NTLM authentication. Note this issue does not affect 32-bit builds.(CVE-2013-1762)


Upgrade to stunnel version 4.55 or later.

See Also

Plugin Details

Severity: High

ID: 65690

File Name: stunnel_4_55.nasl

Version: $Revision: 1.15 $

Type: local

Agent: windows

Family: Windows

Published: 2013/03/26

Modified: 2016/07/29

Dependencies: 65689

Risk Information

Risk Factor: High


Base Score: 9.3

Temporal Score: 8.8

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

Temporal Vector: CVSS2#E:F/RL:ND/RC:ND

Vulnerability Information

CPE: cpe:/a:stunnel:stunnel

Required KB Items: installed_sw/stunnel

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2013/03/03

Vulnerability Publication Date: 2013/02/04

Reference Information

CVE: CVE-2013-0169, CVE-2013-1762

BID: 57778, 58277

OSVDB: 89848, 90841