CVE-2023-45231

Publication date 16 January 2024

Last updated 4 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

EDK2's Network Package is susceptible to an out-of-bounds read vulnerability when processing Neighbor Discovery Redirect message. This vulnerability can be exploited by an attacker to gain unauthorized access and potentially lead to a loss of Confidentiality.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
edk2	25.10 questing	Not affected
	25.04 plucky	Not affected
	24.10 oracular	Not affected
	24.04 LTS noble	Not affected
	23.10 mantic	Fixed 2023.05-2ubuntu0.1
	23.04 lunar	Ignored end of life, was needs-triage
	22.04 LTS jammy	Fixed 2022.02-3ubuntu0.22.04.2
	20.04 LTS focal	Fixed 0~20191122.bd85bf54-2ubuntu3.5
	18.04 LTS bionic	Needs evaluation
	16.04 LTS xenial	Needs evaluation
	14.04 LTS trusty	Ignored end of standard support

Notes

eslerm

"exposure is limited to PXE boot or HTTP boot" patchset available in bug 4518, but not in repo (until Feb-24) fix and unit test commit id likely d74c1be05f4 and 2f237a59ec4

Severity score breakdown

Parameter	Value
Base score	6.5 · Medium
Attack vector	Adjacent
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	None
Availability impact	None
Vector	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

Related Ubuntu Security Notices (USN)

USN-6638-1
EDK II vulnerabilities
15 February 2024