Vulnerability CVE-2014-0016
Published: 2014-03-24

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.

See advisories in our WLB2 database:
Topic
Author
Date
Low
libssh and stunnel PRNG flaws
Aris Adamantiadi...
05.03.2014

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
Stunnel -> Stunnel 

 References:
http://www.openwall.com/lists/oss-security/2014/03/05/1
http://www.securityfocus.com/bid/65964
https://bugzilla.redhat.com/attachment.cgi?id=870826&action=diff
https://bugzilla.redhat.com/show_bug.cgi?id=1072180
https://www.stunnel.org/sdf_ChangeLog.html
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