CVE-2023-49955 Denial of service in n/a
Attackers can cause server instability and denial of service by sending excessively large chargePointVendor fields in BootNotification messages.
- 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-2023-49955?
CVE-2023-49955 is a high-severity denial of service vulnerability in n/a, published on 7 Dec 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue was discovered in Dalmann OCPP.Core before 1.2.0 for OCPP (Open Charge Point Protocol) for electric vehicles. It does not validate the length of the chargePointVendor field in a BootNotification message, potentially leading to server instability and a denial of service when processing excessively large inputs. NOTE: the vendor's perspective is "OCPP.Core is intended for use in a protected environment/network."
Which versions are affected by CVE-2023-49955?
It affects 1 product.
Products include Dallmann-Consulting Open Charge Point Protocol.
How do I fix CVE-2023-49955?
No fix has been published for CVE-2023-49955 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-2023-49955 being exploited?
There is no known exploitation of CVE-2023-49955 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-r83w-76v6-vh75.