CVE-2020-29379 Auth bypass in n/a
Attackers can gain unauthenticated root shell access via Telnet during firmware updates on V-SOL OLT devices, leading to full system compromise.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-29379?
CVE-2020-29379 is a medium-severity authentication bypass vulnerability in n/a, published on 29 Nov 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An issue was discovered on V-SOL V1600D4L V1.01.49 and V1600D-MINI V1.01.48 OLT devices. During the process of updating the firmware, the update script starts a telnetd -l /bin/sh process that does not require authentication for TELNET access.
Weakness: CWE-306
Which versions are affected by CVE-2020-29379?
It affects 2 products.
Products include Vsolcn V1600d-Mini Firmware, Vsolcn V1600d4l Firmware.
How do I fix CVE-2020-29379?
No fix has been published for CVE-2020-29379 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-2020-29379 being exploited?
There is no known exploitation of CVE-2020-29379 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-w4p5-jc3g-29j3.