5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
0.003 Low
EPSS
Percentile
65.9%
The SMB1 protocol implementation in Samba 4.x before 4.2.11, 4.3.x before
4.3.8, and 4.4.x before 4.4.2 does not recognize the โserver signing =
mandatoryโ setting, which allows man-in-the-middle attackers to spoof SMB
servers by modifying the client-server data stream.
Author | Note |
---|---|
mdeslaur | 4.0.0+ only |
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 14.04 | noarch | samba | <ย 2:4.3.8+dfsg-0ubuntu0.14.04.2 | UNKNOWN |
ubuntu | 15.10 | noarch | samba | <ย 2:4.3.8+dfsg-0ubuntu0.15.10.2 | UNKNOWN |
ubuntu | 16.04 | noarch | samba | <ย 2:4.3.8+dfsg-0ubuntu1 | UNKNOWN |
ubuntu | 16.10 | noarch | samba | <ย 2:4.3.8+dfsg-0ubuntu1 | UNKNOWN |
ubuntu | 17.04 | noarch | samba | <ย 2:4.3.8+dfsg-0ubuntu1 | UNKNOWN |
5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
0.003 Low
EPSS
Percentile
65.9%