CVE-2014-0016 - Insufficient Entropy in PRNG

Severity

43%

Complexity

86%

Confidentiality

48%

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.

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 2.0 Base Score 4.3. CVSS Attack Vector: network. CVSS Attack Complexity: medium. CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N).

Overview

Type

Stunnel

First reported 10 years ago

2014-03-24 16:31:00

Last updated 8 years ago

2017-01-26 20:00:00

Affected Software

Stunnel 0.1

0.1

Stunnel 1.0

1.0

Stunnel 1.1

1.1

Stunnel 1.2

1.2

Stunnel 1.3

1.3

Stunnel 1.4

1.4

Stunnel 1.5

1.5

Stunnel 1.6

1.6

Stunnel 2.0

2.0

Stunnel 2.1

2.1

Stunnel 3.0

3.0

Stunnel 3.1

3.1

Stunnel 3.2

3.2

Stunnel 3.3

3.3

Stunnel 3.4a

3.4a

Stunnel 3.5

3.5

Stunnel 3.6

3.6

Stunnel 3.7

3.7

Stunnel 3.8

3.8

Stunnel 3.8 Patch 1

3.8

Stunnel 3.8 Patch 2

3.8

Stunnel 3.8 Patch 3

3.8

Stunnel 3.8 Patch 4

3.8

Stunnel 3.9

3.9

Stunnel 3.10

3.10

Stunnel 3.11

3.11

Stunnel 3.12

3.12

Stunnel 3.13

3.13

Stunnel 3.14

3.14

Stunnel 3.15

3.15

Stunnel 3.16

3.16

Stunnel 3.17

3.17

Stunnel 3.18

3.18

Stunnel 3.19

3.19

Stunnel 3.20

3.20

Stunnel 3.21

3.21

Stunnel 3.21a

3.21a

Stunnel 3.21b

3.21b

Stunnel 3.21c

3.21c

Stunnel 3.22

3.22

Stunnel 3.23

3.23

Stunnel 3.24

3.24

Stunnel 3.25

3.25

Stunnel 3.26

3.26

Stunnel 4.0

4.0

Stunnel 4.01

4.01

Stunnel 4.02

4.02

Stunnel 4.03

4.03

Stunnel 4.04

4.04

Stunnel 4.05

4.05

Stunnel 4.06

4.06

Stunnel 4.07

4.07

Stunnel 4.08

4.08

Stunnel 4.09

4.09

Stunnel 4.10

4.10

Stunnel 4.11

4.11

Stunnel 4.12

4.12

Stunnel 4.13

4.13

Stunnel 4.14

4.14

Stunnel 4.15

4.15

Stunnel 4.16

4.16

Stunnel 4.17

4.17

Stunnel 4.18

4.18

Stunnel 4.19

4.19

Stunnel 4.20

4.20

Stunnel 4.21

4.21

Stunnel 4.22

4.22

Stunnel 4.23

4.23

Stunnel 4.24

4.24

Stunnel 4.25

4.25

Stunnel 4.26

4.26

Stunnel 4.27

4.27

Stunnel 4.28

4.28

Stunnel 4.29

4.29

Stunnel 4.30

4.30

Stunnel 4.31

4.31

Stunnel 4.32

4.32

Stunnel 4.33

4.33

Stunnel 4.34

4.34

Stunnel 4.35

4.35

Stunnel 4.36

4.36

Stunnel 4.37

4.37

Stunnel 4.38

4.38

Stunnel 4.39

4.39

Stunnel 4.40

4.40

Stunnel 4.41

4.41

Stunnel 4.42

4.42

Stunnel 4.43

4.43

Stunnel 4.44

4.44

Stunnel 4.45

4.45

Stunnel 4.46

4.46

Stunnel 4.47

4.47

Stunnel 4.48

4.48

Stunnel 4.49

4.49

Stunnel 4.50

4.50

Stunnel 4.51

4.51

Stunnel 4.52

4.52

Stunnel 4.53

4.53

Stunnel 4.54

4.54

Stunnel Stunnel 4.55

4.55

References

[oss-security] 20140305 libssh and stunnel PRNG flaws

Mailing List, Third Party Advisory

65964

Third Party Advisory, VDB Entry

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

Patch

https://bugzilla.redhat.com/show_bug.cgi?id=1072180

Issue Tracking, Third Party Advisory, VDB Entry

https://www.stunnel.org/sdf_ChangeLog.html

Release Notes, Vendor Advisory

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