CVE-2019-18990 Auth bypass in n/a
Attackers can bypass WPA2 authentication on Realtek-based routers to inject unencrypted frames, enabling data interception or modification.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-18990?
CVE-2019-18990 is a medium-severity authentication bypass vulnerability in n/a, published on 30 Sep 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A partial authentication bypass vulnerability exists on Realtek RTL8812AR 1.21WW, RTL8196D 1.0.0, RTL8192ER 2.10, and RTL8881AN 1.09 devices. The vulnerability allows sending an unencrypted data frame to a WPA2-protected WLAN router where the packet is routed through the network. If successful, a response is sent back as an encrypted frame, which would allow an attacker to discern information or potentially modify data.
Weakness: CWE-290
Which versions are affected by CVE-2019-18990?
It affects 4 products.
Products include Realtek Rtl8192er Firmware, Realtek Rtl8196d Firmware, Realtek Rtl8812ar Firmware, Realtek Rtl8881an Firmware.
How do I fix CVE-2019-18990?
No fix has been published for CVE-2019-18990 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-2019-18990 being exploited?
There is no known exploitation of CVE-2019-18990 in the wild and no public exploit code.
Sources
Also known as GHSA-3wr3-v78q-x45g.