stunnel 4.21 - 4.54 Multiple Vulnerabilities

Medium Nessus Plugin ID 65690

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VPR Score: 5.9


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: Medium

ID: 65690

File Name: stunnel_4_55.nasl

Version: 1.18

Type: local

Agent: windows

Family: Windows

Published: 2013/03/26

Updated: 2019/11/27

Dependencies: 65689

Risk Information

Risk Factor: Medium

VPR Score: 5.9

CVSS Score Source: CVE-2013-1762

CVSS v2.0

Base Score: 6.6

Temporal Score: 4.9

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

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

Vulnerability Information

CPE: cpe:/a:stunnel:stunnel

Required KB Items: installed_sw/stunnel

Exploit Available: false

Exploit Ease: No known 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