CVE-2023-45229
edk2: Integer underflow when processing IA_NA/IA_TA options in a DHCPv6 Advertise message
Severity
ModerateRed Hat Product Security
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 · 6.5CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE-125 · Out-of-bounds Read