5.8
MEDIUM
CVE-2015-3644
Stunnel SSL/TLS Forced Authentication Bypass
Description

Stunnel 5.00 through 5.13, when using the redirect option, does not redirect client connections to the expected server after the initial connection, which allows remote attackers to bypass authentication.

INFO

Published Date :

May 14, 2015, 12:59 a.m.

Last Modified :

Dec. 28, 2016, 2:59 a.m.

Remotely Exploitable :

Yes !

Impact Score :

4.9

Exploitability Score :

8.6
Affected Products

The following products are affected by CVE-2015-3644 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Stunnel stunnel
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2015-3644.

URL Resource
http://www.debian.org/security/2015/dsa-3299
http://www.securityfocus.com/bid/74659
http://www.securitytracker.com/id/1032324
https://www.stunnel.org/CVE-2015-3644.html Patch Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2015-3644 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2015-3644 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Dec. 28, 2016

    Action Type Old Value New Value
    Added Reference http://www.debian.org/security/2015/dsa-3299 [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 28, 2016

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/74659 [No Types Assigned]
  • CVE Modified by [email protected]

    Jun. 04, 2015

    Action Type Old Value New Value
    Added Reference http://www.securitytracker.com/id/1032324
  • Modified Analysis by [email protected]

    May. 15, 2015

    Action Type Old Value New Value
    Added CPE Configuration Configuration 1 OR *cpe:2.3:a:stunnel:stunnel:5.00:*:*:*:*:*:*:* *cpe:2.3:a:stunnel:stunnel:5.01:*:*:*:*:*:*:* *cpe:2.3:a:stunnel:stunnel:5.02:*:*:*:*:*:*:* *cpe:2.3:a:stunnel:stunnel:5.03:*:*:*:*:*:*:* *cpe:2.3:a:stunnel:stunnel:5.04:*:*:*:*:*:*:* *cpe:2.3:a:stunnel:stunnel:5.05:*:*:*:*:*:*:* *cpe:2.3:a:stunnel:stunnel:5.06:*:*:*:*:*:*:* *cpe:2.3:a:stunnel:stunnel:5.07:*:*:*:*:*:*:* *cpe:2.3:a:stunnel:stunnel:5.08:*:*:*:*:*:*:* *cpe:2.3:a:stunnel:stunnel:5.09:*:*:*:*:*:*:* *cpe:2.3:a:stunnel:stunnel:5.10:*:*:*:*:*:*:* *cpe:2.3:a:stunnel:stunnel:5.11:*:*:*:*:*:*:* *cpe:2.3:a:stunnel:stunnel:5.12:*:*:*:*:*:*:* *cpe:2.3:a:stunnel:stunnel:5.13:*:*:*:*:*:*:*
    Added CVSS V2 (AV:N/AC:M/Au:N/C:P/I:P/A:N)
    Changed Reference Type https://www.stunnel.org/CVE-2015-3644.html No Types Assigned https://www.stunnel.org/CVE-2015-3644.html Advisory, Patch
    Added CWE CWE-284
  • Initial Analysis by [email protected]

    May. 15, 2015

    Action Type Old Value New Value
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2015-3644 is associated with the following CWEs:

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.41 }} 0.00%

score

0.69810

percentile

CVSS2 - Vulnerability Scoring System
Access Vector
Access Complexity
Authentication
Confidentiality
Integrity
Availability