medium
4.3
CWE
332
Advisory Published
CVE Published
Updated

CVE-2014-0016

First published: Tue Mar 04 2014(Updated: )

A flaw was found in the way stunnel, a socket wrapper which can provide SSL support to ordinary applications, performed (re)initialization of PRNG after fork. When accepting a new connection, the server forks and the child process handles the request. The RAND_bytes() function of openssl doesn't reset its state after the fork, but seeds the PRNG with the output of time(NULL). The most important consequence is that servers using EC (ECDSA) or DSA certificates may under certain conditions leak their private key.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
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=3.0-b1
Stunnel Stunnel=3.0-b2
Stunnel Stunnel=3.0-b3
Stunnel Stunnel=3.0-b4
Stunnel Stunnel=3.0-b5
Stunnel Stunnel=3.0-b6
Stunnel Stunnel=3.0-b7
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=3.8-p1
Stunnel Stunnel=3.8-p2
Stunnel Stunnel=3.8-p3
Stunnel Stunnel=3.8-p4
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
Stunnel Stunnel=4.04
Stunnel Stunnel=4.05
Stunnel Stunnel=4.06
Stunnel Stunnel=4.07
Stunnel Stunnel=4.08
Stunnel Stunnel=4.09
Stunnel Stunnel=4.10
Stunnel Stunnel=4.11
Stunnel Stunnel=4.12
Stunnel Stunnel=4.13
Stunnel Stunnel=4.14
Stunnel Stunnel=4.15
Stunnel Stunnel=4.16
Stunnel Stunnel=4.17
Stunnel Stunnel=4.18
Stunnel Stunnel=4.19
Stunnel Stunnel=4.20
Stunnel Stunnel=4.21
Stunnel Stunnel=4.22
Stunnel Stunnel=4.23
Stunnel Stunnel=4.24
Stunnel Stunnel=4.25
Stunnel Stunnel=4.26
Stunnel Stunnel=4.27
Stunnel Stunnel=4.28
Stunnel Stunnel=4.29
Stunnel Stunnel=4.30
Stunnel Stunnel=4.31
Stunnel Stunnel=4.32
Stunnel Stunnel=4.33
Stunnel Stunnel=4.34
Stunnel Stunnel=4.35
Stunnel Stunnel=4.36
Stunnel Stunnel=4.37
Stunnel Stunnel=4.38
Stunnel Stunnel=4.39
Stunnel Stunnel=4.40
Stunnel Stunnel=4.41
Stunnel Stunnel=4.42
Stunnel Stunnel=4.43
Stunnel Stunnel=4.44
Stunnel Stunnel=4.45
Stunnel Stunnel=4.46
Stunnel Stunnel=4.47
Stunnel Stunnel=4.48
Stunnel Stunnel=4.49
Stunnel Stunnel=4.50
Stunnel Stunnel=4.51
Stunnel Stunnel=4.52
Stunnel Stunnel=4.53
Stunnel Stunnel=4.54
Stunnel Stunnel=4.55

Remedy

https://bugzilla.redhat.com/attachment.cgi?id=870826&action=diff

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