CVE-2017-17877 Information

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.

CVSS Vector

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

Reference

https://blogger.davidmanouchehri.com/2017/12/steam-link-security-remotely-insecure.html https://github.com/ValveSoftware/steamlink-sdkssh-access https://github.com/ValveSoftware/steamlink-sdk/issues/119

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8