CVE-2014-0016

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.

CVSS Metrics

• v2.0•MEDIUM•Score: 4.3AV:N/AC:M/Au:N/C:P/I:N/A:N

EPSS Trends

Current EPSS score: 0.31%• Percentile: 55%

Techniques & Countermeasures

• CWE-332•Insufficient Entropy in PRNG

  The lack of entropy available for, or used by, a Pseudo-Random Number Generator (PRNG) can be a stability and security threat.

Affected Systems

• stunnel•stunnel

  ≤ 4.56 | 0.1 | 1.0 | 1.1 | 1.2 | 1.3 | 1.4 | 1.5 | 1.6 | 2.0 | 2.1 | 3.0 | 3.0:b1 | 3.0:b2 | 3.0:b3 | 3.0:b4 | 3.0:b5 | 3.0:b6 | 3.0:b7 | 3.1 | 3.2 | 3.3 | 3.4a | 3.5 | 3.6 | 3.7 | 3.8 | 3.8:p1 | 3.8:p2 | 3.8:p3 | 3.8:p4 | 3.8p1 | 3.8p2 | 3.8p3 | 3.8p4 | 3.9 | 3.10 | 3.11 | 3.12 | 3.13 | 3.14 | 3.15 | 3.16 | 3.17 | 3.18 | 3.19 | 3.20 | 3.21 | 3.21a | 3.21b | 3.21c | 3.22 | 3.23 | 3.24 | 3.25 | 3.26 | 4.00 | 4.0 | 4.01 | 4.02 | 4.03 | 4.04 | 4.05 | 4.06 | 4.07 | 4.08 | 4.09 | 4.10 | 4.11 | 4.12 | 4.13 | 4.14 | 4.15 | 4.16 | 4.17 | 4.18 | 4.19 | 4.20 | 4.21 | 4.22 | 4.23 | 4.24 | 4.25 | 4.26 | 4.27 | 4.28 | 4.29 | 4.30 | 4.31 | 4.32 | 4.33 | 4.34 | 4.35 | 4.36 | 4.37 | 4.38 | 4.39 | 4.40 | 4.41 | 4.42 | 4.43 | 4.44 | 4.45 | 4.46 | 4.47 | 4.48 | 4.49 | 4.50 | 4.51 | 4.52 | 4.53 | 4.54 | 4.55

References (5)

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