CVE-2021-20998 WAGO: Managed Switches: Unauthorized creation of user accounts
Attackers can create unauthorized user accounts on WAGO managed switches by sending specially crafted packets without authentication.
- 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-2021-20998?
CVE-2021-20998 is a critical missing authorization vulnerability in WAGO 0852-0303, published on 13 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In multiple managed switches by WAGO in different versions without authorization and with specially crafted packets it is possible to create users.
Weakness: CWE-306
Which versions are affected by CVE-2021-20998?
It affects 5 products.
Products include Wago 0852-0303 Firmware, Wago 0852-1305\/000-001 Firmware, Wago 0852-1305 Firmware, Wago 0852-1505\/000-001 Firmware, Wago 0852-1505 Firmware.
How do I fix CVE-2021-20998?
No fix has been published for CVE-2021-20998 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2021-20998 being exploited?
There is no known exploitation of CVE-2021-20998 in the wild and no public exploit code.
Other vulnerabilities in WAGO 0852-0303
- CVE-2021-20994 WAGO: Managed Switches: Reflected Cross-site Scripting
- CVE-2021-20997 WAGO: Managed Switches: Unauthorized access to password hashes
- CVE-2021-20993 WAGO: Managed Switches: Exposure of sensitive information through directory listing
- CVE-2021-20995 WAGO: Managed Switches: Storage of user credentials in a cookie
- CVE-2021-20996 WAGO: Managed Switches: Unsecure Cookie settings
Sources
Also known as GHSA-wvfh-fc5m-v972.