CVE-2017-3204

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Summary

CVECVE-2017-3204
StatePUBLISHED
Assignercertcc
Source PriorityCVE Program / NVD first with legacy fallback
Published2017-04-04 14:59:00 UTC
Updated2025-04-20 01:37:25 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 8.1 HIGH from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem Types: CWE-310 | NVD-CWE-noinfo | CWE-310 CWE-310

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary8.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
2.0[email protected]Primary6.8AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial

AV:N/AC:M/Au:N/C:P/I:P/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Golang Crypto All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Go SSH Library affected prior to commit e4e2799 Not specified

References

ReferenceSourceLinkTags
Golang SSH Security : The Grumpy Troll af854a3a-2127-422b-91ae-364da2661108 bridge.grumpy-troll.org Third Party Advisory
x/crypto/ssh: make ClientConfig HostKeyCallback non-permissive by default · Issue #19767 · golang/go · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Third Party Advisory
Golang Go SSH Library CVE-2017-3204 Security Bypass Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
ssh: require host key checking in the ClientConfig · golang/crypto@e4e2799 · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Patch, Third Party Advisory
ssh - GoDoc af854a3a-2127-422b-91ae-364da2661108 godoc.org Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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