CVE Database›CVE-2023-45229

CVE-2023-45229

edk2: Integer underflow when processing IA_NA/IA_TA options in a DHCPv6 Advertise message

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Severity

Moderate

Red Hat Product Security

6.5

CVSS 3.1

Review impact separately from score.

Published · January 16, 2024

Updated · June 26, 2026

Description

A vulnerability has been identified in the NetworkPkg IP stack of EDK2, the open-source reference implementation of the UEFI specification. This flaw enables an unauthenticated attacker within the same network vicinity to transmit a specifically crafted DHCPv6 message. Exploiting this vulnerability may result in unauthorized access to memory beyond its boundaries, potentially leading to the exposure of sensitive information.

Statement

The identified flaw in the NetworkPkg IP stack within the EDK2, an open-source UEFI implementation, poses a moderate security concern. This vulnerability allows an unauthenticated attacker within the same network to exploit via a crafted DHCPv6 message, potentially leading to the unauthorized access of memory beyond its designated boundaries. While the issue has the potential to leak sensitive information, its impact is considered moderate, requiring an attacker to be within the adjacent network for successful exploitation.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

CVSS / CWE

CVSS 3.1 · 6.5
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CWE-125 · Out-of-bounds Read