CWE
119
Advisory Published

USN-6638-1: EDK II vulnerabilities

First published: Thu Feb 15 2024(Updated: )

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)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/efi-shell-aa64<2023.05-2ubuntu0.1
2023.05-2ubuntu0.1
Ubuntu=23.10
All of
ubuntu/efi-shell-arm<2023.05-2ubuntu0.1
2023.05-2ubuntu0.1
Ubuntu=23.10
All of
ubuntu/efi-shell-x64<2023.05-2ubuntu0.1
2023.05-2ubuntu0.1
Ubuntu=23.10
All of
ubuntu/ovmf<2023.05-2ubuntu0.1
2023.05-2ubuntu0.1
Ubuntu=23.10
All of
ubuntu/qemu-efi-aarch64<2023.05-2ubuntu0.1
2023.05-2ubuntu0.1
Ubuntu=23.10
All of
ubuntu/qemu-efi-arm<2023.05-2ubuntu0.1
2023.05-2ubuntu0.1
Ubuntu=23.10
All of
ubuntu/ovmf<2022.02-3ubuntu0.22.04.2
2022.02-3ubuntu0.22.04.2
Ubuntu=22.04
All of
ubuntu/qemu-efi<2022.02-3ubuntu0.22.04.2
2022.02-3ubuntu0.22.04.2
Ubuntu=22.04
All of
ubuntu/qemu-efi-aarch64<2022.02-3ubuntu0.22.04.2
2022.02-3ubuntu0.22.04.2
Ubuntu=22.04
All of
ubuntu/qemu-efi-arm<2022.02-3ubuntu0.22.04.2
2022.02-3ubuntu0.22.04.2
Ubuntu=22.04
All of
ubuntu/ovmf<0~20191122.bd85bf54-2ubuntu3.5
0~20191122.bd85bf54-2ubuntu3.5
Ubuntu=20.04
All of
ubuntu/qemu-efi<0~20191122.bd85bf54-2ubuntu3.5
0~20191122.bd85bf54-2ubuntu3.5
Ubuntu=20.04
All of
ubuntu/qemu-efi-aarch64<0~20191122.bd85bf54-2ubuntu3.5
0~20191122.bd85bf54-2ubuntu3.5
Ubuntu=20.04
All of
ubuntu/qemu-efi-arm<0~20191122.bd85bf54-2ubuntu3.5
0~20191122.bd85bf54-2ubuntu3.5
Ubuntu=20.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-6638-1?

    USN-6638-1 is categorized as a high severity vulnerability due to potential remote code execution risks.

  • How do I fix USN-6638-1?

    To fix USN-6638-1, update the affected packages to the specified versions in the Ubuntu security advisory.

  • Which versions of Ubuntu are affected by USN-6638-1?

    USN-6638-1 affects Ubuntu versions 20.04, 22.04, and 23.10.

  • What types of attacks can exploit USN-6638-1?

    Attackers can exploit USN-6638-1 through buffer overflow vulnerabilities to potentially execute arbitrary code.

  • Is USN-6638-1 related to any known CVEs?

    Yes, USN-6638-1 is associated with CVE-2022-36763, CVE-2022-36764, and CVE-2022-36765.

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