Your submission was sent successfully! Close

Thank you for contacting us. A member of our team will be in touch shortly. Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

USN-6638-1: EDK II vulnerabilities

15 February 2024

Several security issues were fixed in EDK II.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Releases

Packages

  • edk2 - UEFI firmware for virtual machines

Details

Marc Beatove discovered buffer overflows exit in EDK2. An attacker on the
local network could potentially use this to impact availability or possibly
cause remote code execution. (CVE-2022-36763, CVE-2022-36764,
CVE-2022-36765)

It was discovered that a buffer overflows exists in EDK2's Network Package
An attacker on the local network could potentially use these to impact
availability or possibly cause remote code execution. (CVE-2023-45230,
CVE-2023-45234, CVE-2023-45235)

It was discovered that an out-of-bounds read exists in EDK2's Network
Package An attacker on the local network could potentially use this to
impact confidentiality. (CVE-2023-45231)

It was discovered that infinite-loops exists in EDK2's Network Package
An attacker on the local network could potentially use these to impact
availability. (CVE-2023-45232, CVE-2023-45233)

Mate Kukri discovered that an insecure default to allow UEFI Shell in
EDK2 was left enabled in Ubuntu's EDK2. An attacker could use this to
bypass Secure Boot. (CVE-2023-48733)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 23.10
Ubuntu 22.04
Ubuntu 20.04

In general, a standard system update will make all the necessary changes.

References

Join the discussion

Need help with your security needs?

Ubuntu Pro provides up to ten-year security coverage for over 23,000 open-source packages within the Ubuntu Main and Universe repositories.

Talk to an expert to find out what would work best for you

Further reading