CVE-2017-17877 Auth bypass in n/a
Attackers can gain root access on Steam Link devices by guessing MAC addresses if the SSH daemon is enabled, exposing the device to remote compromise.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2017-17877?
CVE-2017-17877 is a critical authentication bypass vulnerability in n/a, published on 24 Dec 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2017-17877?
It affects 1 product.
Products include Valvesoftware Steam Link Firmware.
How do I fix CVE-2017-17877?
No fix has been published for CVE-2017-17877 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2017-17877 being exploited?
There is no known exploitation of CVE-2017-17877 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-wjcr-9rvj-672v.