CVE-2018-10561 Dasan Gigabit Passive Optical Network (GPON) Routers: login or permission bypass
In plain words: A door that should be locked is not: part of the system can be reached without a valid login or permission. The attacker gets in as a user or administrator without knowing a password.
Confirmed exploited by CISA on · US federal patch deadline Apr 21, 2022
What to do
- Install Dasan's security update for Gigabit Passive Optical Network (GPON) Routers. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Turn on automatic firmware updates and replace gear the maker no longer supports.
- Change default passwords and switch off remote administration and features you do not use.
- Do not put storage boxes or cameras directly on the internet — use the maker's app or a VPN.
Who is affected
Could reach you. This one is aimed at devices or apps of the kind people own.
What's at risk: Taken over in bulk to join botnets, used to watch your traffic, or — for storage boxes — locked by ransomware.
The details
- Official name
- Dasan GPON Routers Authentication Bypass Vulnerability
- Product
- Dasan Gigabit Passive Optical Network (GPON) Routers
- CISA description
- Dasan GPON Routers contain an authentication bypass vulnerability. When combined with CVE-2018-10562, exploitation can allow an attacker to perform remote code execution.
- Type of flaw
- Login or permission bypass (CWE-287)
- Confirmed exploited
- Mar 31, 2022
- US federal patch deadline
- Apr 21, 2022
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Answering about CVE-2018-10561 ·
Questions about CVE-2018-10561
Is CVE-2018-10561 being exploited?
Yes. CISA added CVE-2018-10561 to its Known Exploited Vulnerabilities catalog on Mar 31, 2022, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2018-10561?
Install Dasan's security update for Gigabit Passive Optical Network (GPON) Routers. If no update exists, follow the vendor's workaround or stop using the product until one ships. Turn on automatic firmware updates and replace gear the maker no longer supports.
Am I affected by CVE-2018-10561?
Only if you use Dasan Gigabit Passive Optical Network (GPON) Routers. This one is aimed at devices or apps of the kind people own.