CVE-2014-0016

Name: CVE-2014-0016
Creator: NVD / NIST
Published: 2014-03-24T16:31:08.447+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.15%

Last modified Jun 17, 2026

CVE-2014-0016 is a vulnerability of currently unknown severity. stunnel before 5.00, when using fork threading, does not properly update the state of the OpenSSL pseudo-random number generator (PRNG), which causes subsequent children with the same process ID to use the same entropy pool and allows remote attackers to obtain private keys for EC (ECDSA) or DSA certificates.. EPSS estimates a 2.15% chance of exploitation in the next 30 days.

Description

stunnel before 5.00, when using fork threading, does not properly update the state of the OpenSSL pseudo-random number generator (PRNG), which causes subsequent children with the same process ID to use the same entropy pool and allows remote attackers to obtain private keys for EC (ECDSA) or DSA certificates.

Metrics

EPSS Probability

2.15%

79.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-332

Affected Software

Vendor	Product	Versions
Stunnel	Stunnel	<= 4.56
Stunnel	Stunnel	0.1
Stunnel	Stunnel	1.0
Stunnel	Stunnel	1.1
Stunnel	Stunnel	1.2
Stunnel	Stunnel	1.3
Stunnel	Stunnel	1.4
Stunnel	Stunnel	1.5
Stunnel	Stunnel	1.6
Stunnel	Stunnel	2.0
Stunnel	Stunnel	2.1
Stunnel	Stunnel	3.0
Stunnel	Stunnel	3.1
Stunnel	Stunnel	3.2
Stunnel	Stunnel	3.3
Stunnel	Stunnel	3.4a
Stunnel	Stunnel	3.5
Stunnel	Stunnel	3.6
Stunnel	Stunnel	3.7
Stunnel	Stunnel	3.8
Stunnel	Stunnel	3.8p1
Stunnel	Stunnel	3.8p2
Stunnel	Stunnel	3.8p3
Stunnel	Stunnel	3.8p4
Stunnel	Stunnel	3.9
Stunnel	Stunnel	3.10
Stunnel	Stunnel	3.11
Stunnel	Stunnel	3.12
Stunnel	Stunnel	3.13
Stunnel	Stunnel	3.14
Stunnel	Stunnel	3.15
Stunnel	Stunnel	3.16
Stunnel	Stunnel	3.17
Stunnel	Stunnel	3.18
Stunnel	Stunnel	3.19
Stunnel	Stunnel	3.20
Stunnel	Stunnel	3.21
Stunnel	Stunnel	3.21a
Stunnel	Stunnel	3.21b
Stunnel	Stunnel	3.21c
Stunnel	Stunnel	3.22
Stunnel	Stunnel	3.23
Stunnel	Stunnel	3.24
Stunnel	Stunnel	3.25
Stunnel	Stunnel	3.26
Stunnel	Stunnel	4.00
Stunnel	Stunnel	4.0
Stunnel	Stunnel	4.01
Stunnel	Stunnel	4.02
Stunnel	Stunnel	4.03

Showing 50 of 102 affected configurations. See NVD for the full list.

References

http://www.openwall.com/lists/oss-security/2014/03/05/1Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/65964Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/attachment.cgi?id=870826&action=diffPatch
https://bugzilla.redhat.com/show_bug.cgi?id=1072180Issue Tracking, Third Party Advisory, VDB Entry
https://www.stunnel.org/sdf_ChangeLog.htmlRelease Notes, Vendor Advisory
http://www.openwall.com/lists/oss-security/2014/03/05/1Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/65964Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/attachment.cgi?id=870826&action=diffPatch
https://bugzilla.redhat.com/show_bug.cgi?id=1072180Issue Tracking, Third Party Advisory, VDB Entry
https://www.stunnel.org/sdf_ChangeLog.htmlRelease Notes, Vendor Advisory

Timeline

Published: Mar 24, 2014
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2014-0016?

How severe is CVE-2014-0016?

Severity scoring for CVE-2014-0016 is pending analysis. The EPSS model estimates a 2.15% probability of exploitation in the next 30 days.

How do I fix CVE-2014-0016?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2014-0016?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST