medium
5.9
CWE
254
Advisory Published
Updated

CVE-2016-2115

First published: Mon Apr 25 2016(Updated: )

Samba 3.x and 4.x before 4.2.11, 4.3.x before 4.3.8, and 4.4.x before 4.4.2 does not require SMB signing within a DCERPC session over ncacn_np, which allows man-in-the-middle attackers to spoof SMB clients by modifying the client-server data stream.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
Ubuntu=14.04
Ubuntu=15.10
Ubuntu=16.04
Samba=3.0.0
Samba=3.0.1
Samba=3.0.2
Samba=3.0.2-a
Samba=3.0.2a
Samba=3.0.3
Samba=3.0.4
Samba=3.0.4-rc1
Samba=3.0.5
Samba=3.0.6
Samba=3.0.7
Samba=3.0.8
Samba=3.0.9
Samba=3.0.10
Samba=3.0.11
Samba=3.0.12
Samba=3.0.13
Samba=3.0.14
Samba=3.0.14-a
Samba=3.0.14a
Samba=3.0.15
Samba=3.0.16
Samba=3.0.17
Samba=3.0.18
Samba=3.0.19
Samba=3.0.20
Samba=3.0.20-a
Samba=3.0.20-b
Samba=3.0.20a
Samba=3.0.20b
Samba=3.0.21
Samba=3.0.21-a
Samba=3.0.21-b
Samba=3.0.21-c
Samba=3.0.21a
Samba=3.0.21b
Samba=3.0.21c
Samba=3.0.22
Samba=3.0.23
Samba=3.0.23-a
Samba=3.0.23-b
Samba=3.0.23-c
Samba=3.0.23-d
Samba=3.0.23a
Samba=3.0.23b
Samba=3.0.23c
Samba=3.0.23d
Samba=3.0.24
Samba=3.0.25
Samba=3.0.25-a
Samba=3.0.25-b
Samba=3.0.25-c
Samba=3.0.25-pre1
Samba=3.0.25-pre2
Samba=3.0.25-rc1
Samba=3.0.25-rc2
Samba=3.0.25-rc3
Samba=3.0.25a
Samba=3.0.25b
Samba=3.0.25c
Samba=3.0.26
Samba=3.0.26-a
Samba=3.0.26a
Samba=3.0.27
Samba=3.0.27-a
Samba=3.0.28
Samba=3.0.28-a
Samba=3.0.29
Samba=3.0.30
Samba=3.0.31
Samba=3.0.32
Samba=3.0.33
Samba=3.0.34
Samba=3.0.35
Samba=3.0.36
Samba=3.0.37
Samba=3.2.0
Samba=3.2.1
Samba=3.2.2
Samba=3.2.3
Samba=3.2.4
Samba=3.2.5
Samba=3.2.6
Samba=3.2.7
Samba=3.2.8
Samba=3.2.9
Samba=3.2.10
Samba=3.2.11
Samba=3.2.12
Samba=3.2.13
Samba=3.2.14
Samba=3.2.15
Samba=3.3.0
Samba=3.3.1
Samba=3.3.2
Samba=3.3.3
Samba=3.3.4
Samba=3.3.5
Samba=3.3.6
Samba=3.3.7
Samba=3.3.8
Samba=3.3.9
Samba=3.3.10
Samba=3.3.11
Samba=3.3.12
Samba=3.3.13
Samba=3.3.14
Samba=3.3.15
Samba=3.3.16
Samba=3.4.0
Samba=3.4.1
Samba=3.4.2
Samba=3.4.3
Samba=3.4.4
Samba=3.4.5
Samba=3.4.6
Samba=3.4.7
Samba=3.4.8
Samba=3.4.9
Samba=3.4.10
Samba=3.4.11
Samba=3.4.12
Samba=3.4.13
Samba=3.4.14
Samba=3.4.15
Samba=3.4.16
Samba=3.4.17
Samba=3.5.0
Samba=3.5.1
Samba=3.5.2
Samba=3.5.3
Samba=3.5.4
Samba=3.5.5
Samba=3.5.6
Samba=3.5.7
Samba=3.5.8
Samba=3.5.9
Samba=3.5.10
Samba=3.5.11
Samba=3.5.12
Samba=3.5.13
Samba=3.5.14
Samba=3.5.15
Samba=3.5.16
Samba=3.5.17
Samba=3.5.18
Samba=3.5.19
Samba=3.5.20
Samba=3.5.21
Samba=3.5.22
Samba=3.6.0
Samba=3.6.1
Samba=3.6.2
Samba=3.6.3
Samba=3.6.4
Samba=3.6.5
Samba=3.6.6
Samba=3.6.7
Samba=3.6.8
Samba=3.6.9
Samba=3.6.10
Samba=3.6.11
Samba=3.6.12
Samba=3.6.13
Samba=3.6.14
Samba=3.6.15
Samba=3.6.16
Samba=3.6.17
Samba=3.6.18
Samba=3.6.19
Samba=3.6.20
Samba=3.6.21
Samba=3.6.22
Samba=3.6.23
Samba=3.6.24
Samba=3.6.25
Samba=4.0.0
Samba=4.0.1
Samba=4.0.2
Samba=4.0.3
Samba=4.0.4
Samba=4.0.5
Samba=4.0.6
Samba=4.0.7
Samba=4.0.8
Samba=4.0.9
Samba=4.0.10
Samba=4.0.11
Samba=4.0.12
Samba=4.0.13
Samba=4.0.14
Samba=4.0.15
Samba=4.0.16
Samba=4.0.17
Samba=4.0.18
Samba=4.0.19
Samba=4.0.20
Samba=4.0.21
Samba=4.0.22
Samba=4.0.23
Samba=4.0.24
Samba=4.0.25
Samba=4.0.26
Samba=4.1.0
Samba=4.1.1
Samba=4.1.2
Samba=4.1.3
Samba=4.1.4
Samba=4.1.5
Samba=4.1.6
Samba=4.1.7
Samba=4.1.8
Samba=4.1.9
Samba=4.1.10
Samba=4.1.11
Samba=4.1.12
Samba=4.1.13
Samba=4.1.14
Samba=4.1.15
Samba=4.1.16
Samba=4.1.17
Samba=4.1.18
Samba=4.1.19
Samba=4.1.20
Samba=4.1.21
Samba=4.1.22
Samba=4.1.23
Samba=4.2.0-rc1
Samba=4.2.0-rc2
Samba=4.2.0-rc3
Samba=4.2.0-rc4
Samba=4.2.1
Samba=4.2.2
Samba=4.2.3
Samba=4.2.4
Samba=4.2.5
Samba=4.2.6
Samba=4.2.7
Samba=4.2.8
Samba=4.2.9
Samba=4.3.0
Samba=4.3.1
Samba=4.3.2
Samba=4.3.3
Samba=4.3.4
Samba=4.3.5
Samba=4.3.6
Samba=4.4.0

Remedy

https://www.samba.org/samba/security/CVE-2016-2115.html

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2016-2115?

    The severity of CVE-2016-2115 is categorized as critical, as it allows man-in-the-middle attacks due to the lack of SMB signing.

  • How do I fix CVE-2016-2115?

    To fix CVE-2016-2115, you should upgrade Samba to version 4.2.11, 4.3.8, or 4.4.2 or later.

  • Which versions of Samba are affected by CVE-2016-2115?

    CVE-2016-2115 affects Samba versions 3.x and 4.x prior to 4.2.11, 4.3.8, and 4.4.2.

  • How does CVE-2016-2115 affect SMB communication?

    CVE-2016-2115 allows attackers to spoof SMB clients by modifying the client-server data stream during DCERPC sessions.

  • What are the potential consequences of CVE-2016-2115 exploitation?

    Exploitation of CVE-2016-2115 can lead to unauthorized access to sensitive data and potential compromise of SMB clients.

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