Vulnerability Details : CVE-2015-3644
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.
Vulnerability category: BypassGain privilege
Products affected by CVE-2015-3644
- 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:5.12:*:*:*:*:*:*:*
- cpe:2.3:a:stunnel:stunnel:5.13:*:*:*:*:*:*:*
- cpe:2.3:a:stunnel:stunnel:5.00:*:*:*:*:*:*:*
- cpe:2.3:a:stunnel:stunnel:5.08:*:*:*:*:*:*:*
- cpe:2.3:a:stunnel:stunnel:5.09:*:*:*:*:*:*:*
- cpe:2.3:a:stunnel:stunnel:5.01:*:*:*:*:*:*:*
- cpe:2.3:a:stunnel:stunnel:5.02:*:*:*:*:*:*:*
- cpe:2.3:a:stunnel:stunnel:5.10:*:*:*:*:*:*:*
- cpe:2.3:a:stunnel:stunnel:5.11:*:*:*:*:*:*:*
- cpe:2.3:a:stunnel:stunnel:5.06:*:*:*:*:*:*:*
- cpe:2.3:a:stunnel:stunnel:5.07:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2015-3644
0.41%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 70 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2015-3644
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
5.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:N |
8.6
|
4.9
|
NIST |
CWE ids for CVE-2015-3644
-
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.Assigned by: nvd@nist.gov (Primary)
References for CVE-2015-3644
-
http://www.securitytracker.com/id/1032324
Stunnel Redirect Option Connection Forwarding Flaw Lets Remote Users Bypass Authentication - SecurityTracker
-
https://www.stunnel.org/CVE-2015-3644.html
stunnel: CVE-2015-3644Patch;Vendor Advisory
-
http://www.securityfocus.com/bid/74659
Stunnel CVE-2015-3644 Authentication Bypass Vulnerability
-
http://www.debian.org/security/2015/dsa-3299
Debian -- Security Information -- DSA-3299-1 stunnel4
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