Ubuntu.comUB:CVE-2017-3204CVE-2017-3204
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
61.9%
The Go SSH library (x/crypto/ssh) by default does not verify host keys,
facilitating man-in-the-middle attacks. Default behavior changed in commit
e4e2799 to require explicitly registering a hostkey verification mechanism.
Bugs
- <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=859655>
- <https://github.com/golang/go/issues/19767>
Notes
| Author | Note |
|---|---|
| jdstrand | ubuntu-snappy and snapd contain embedded copies of golang-go.crypto |
| tyhicks | snapd doesn’t use this particular part of golang-go.crypto as it doesn’t act as a SSH client |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 16.04 | noarch | golang-go.crypto | < any | UNKNOWN |
Related
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
61.9%