CVE-2015-3644

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Summary

CVECVE-2015-3644
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2015-05-14 00:59:06 UTC
Updated2026-05-06 22:30:45 UTC
DescriptionStunnel 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.

Risk And Classification

Primary CVSS: v2.0 5.8 from [email protected]

AV:N/AC:M/Au:N/C:P/I:P/A:N

Problem Types: CWE-284 | n/a

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
None

AV:N/AC:M/Au:N/C:P/I:P/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Stunnel Stunnel 5.00 All All All
Application Stunnel Stunnel 5.01 All All All
Application Stunnel Stunnel 5.02 All All All
Application Stunnel Stunnel 5.03 All All All
Application Stunnel Stunnel 5.04 All All All
Application Stunnel Stunnel 5.05 All All All
Application Stunnel Stunnel 5.06 All All All
Application Stunnel Stunnel 5.07 All All All
Application Stunnel Stunnel 5.08 All All All
Application Stunnel Stunnel 5.09 All All All
Application Stunnel Stunnel 5.10 All All All
Application Stunnel Stunnel 5.11 All All All
Application Stunnel Stunnel 5.12 All All All
Application Stunnel Stunnel 5.13 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Stunnel Redirect Option Connection Forwarding Flaw Lets Remote Users Bypass Authentication - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com
Stunnel CVE-2015-3644 Authentication Bypass Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
Debian -- Security Information -- DSA-3299-1 stunnel4 af854a3a-2127-422b-91ae-364da2661108 www.debian.org
stunnel: CVE-2015-3644 af854a3a-2127-422b-91ae-364da2661108 www.stunnel.org Patch, Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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