CVE-2023-45233 Infinite loop in EDK II Network Package
An attacker can cause a denial of service in EDK II UEFI firmware by sending a crafted IPv6 packet with a specific PadN option.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-45233?
CVE-2023-45233 is a high-severity denial of service vulnerability in TianoCore edk2, published on 16 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
EDK2's Network Package is susceptible to an infinite lop vulnerability when parsing a PadN option in the Destination Options header of IPv6. This vulnerability can be exploited by an attacker to gain unauthorized access and potentially lead to a loss of Availability.
Weakness: CWE-835
Which versions are affected by CVE-2023-45233?
It affects 1 product.
Products include Tianocore Edk2.
How do I fix CVE-2023-45233?
Apply the vendor's patch.
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-2023-45233 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-45233 exists.
Other vulnerabilities in TianoCore edk2
Sources
Also known as AZL-38842, AZL-39355, AZL-39538, BELL-CVE-2023-45233, DEBIAN-CVE-2023-45233, GHSA-p9h6-p7cr-7842 and 1 more.