CVE Database›CVE-2015-3644

CVE-2015-3644

stunnel: authentication bypass with the "redirect" option

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Severity

Important

Red Hat Product Security

6.4

CVSS 2.0

Review impact separately from score.

Published · May 14, 2015

Updated · November 21, 2025

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.

Statement

Not vulnerable. This issue did not affect the versions of stunnel as shipped with Red Hat Enterprise Linux 5, 6, and 7.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 2.0 · 6.4
AV:N/AC:L/Au:N/C:P/I:P/A:N

CWE not specified