CVE-2023-28768 Denial of service in XGS2220-30 firmware
An unauthenticated LAN attacker can cause denial of service on Zyxel switches by sending crafted frames due to improper frame handling.
- 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-2023-28768?
CVE-2023-28768 is a medium-severity denial of service vulnerability in Zyxel XGS2220-30 firmware, published on 14 Aug 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Improper frame handling in the Zyxel XGS2220-30 firmware version V4.80(ABXN.1), XMG1930-30 firmware version V4.80(ACAR.1), and XS1930-10 firmware version V4.80(ABQE.1) could allow an unauthenticated LAN-based attacker to cause denial-of-service (DoS) conditions by sending crafted frames to an affected switch.
Weakness: CWE-755
Which versions are affected by CVE-2023-28768?
It affects 11 products.
Products include Zyxel Xgs2220-30 Firmware, Zyxel Xgs2220-30f Firmware, Zyxel Xgs2220-30hp Firmware, Zyxel Xgs2220-54 Firmware, Zyxel Xgs2220-54fp Firmware, Zyxel Xgs2220-54hp Firmware and 5 more.
How do I fix CVE-2023-28768?
No fix has been published for CVE-2023-28768 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2023-28768 being exploited?
There is no known exploitation of CVE-2023-28768 in the wild and no public exploit code.
Sources
Also known as GHSA-7vjf-qw8c-2v29.