CVE-2017-17877
9.8
CRITICAL · CVSS 3.0 · EPSS 4.1% (pctl 90)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
Description
An 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.
Scoring
| CVSS | 9.8 (CRITICAL, v3.0) |
|---|---|
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 4.1% — more likely to be exploited than 90% of all CVEs |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2017-12-27 |
| Last modified | 2026-06-17 |
Affected (2)
| Vendor | Product |
|---|---|
| valvesoftware | steam link |
| valvesoftware | steam link firmware |
References
- https://blogger.davidmanouchehri.com/2017/12/steam-link-security-remotely-insecure.html
- https://github.com/ValveSoftware/steamlink-sdk#ssh-access
- https://github.com/ValveSoftware/steamlink-sdk/issues/119
- https://blogger.davidmanouchehri.com/2017/12/steam-link-security-remotely-insecure.html
- https://github.com/ValveSoftware/steamlink-sdk#ssh-access
- https://github.com/ValveSoftware/steamlink-sdk/issues/119
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