CVE-2017-17877

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Summary

CVECVE-2017-17877
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2017-12-27 17:08:21 UTC
Updated2025-04-20 01:37:25 UTC
DescriptionAn issue was discovered in Valve Steam Link build 643. When the SSH daemon is enabled for local development, the device is publicly available via IPv6 TCP port 22 over the internet (with stateless address autoconfiguration) by default, which makes it easier for remote attackers to obtain access by guessing 24 bits of the MAC address and attempting a root login. This can be exploited in conjunction with CVE-2017-17878.

Risk And Classification

Primary CVSS: v3.0 9.8 CRITICAL from [email protected]

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.012730000 probability, percentile 0.797400000 (date 2026-05-19)

Problem Types: NVD-CWE-noinfo | n/a

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary9.8CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
2.0[email protected]Primary10AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS v3.0 Breakdown

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

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:N/AC:L/Au:N/C:C/I:C/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Valvesoftware Steam Link - All All All
Operating System Valvesoftware Steam Link Firmware All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
github.com/ValveSoftware/steamlink-sdk/issues/119 af854a3a-2127-422b-91ae-364da2661108 github.com Issue Tracking, Third Party Advisory
RFC 3514: Steam Link Security - Remotely Insecure SSH - Part #2 af854a3a-2127-422b-91ae-364da2661108 blogger.davidmanouchehri.com Issue Tracking, Third Party Advisory
GitHub - ValveSoftware/steamlink-sdk: An SDK for creating native Steam Link applications af854a3a-2127-422b-91ae-364da2661108 github.com Issue Tracking, Third Party Advisory
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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