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redhatcveRedhat.comRH:CVE-2023-45235
HistoryJan 17, 2024 - 3:56 a.m.

CVE-2023-45235

2024-01-1703:56:05
redhat.com
access.redhat.com
13
cve-2023-45235
buffer overflow
edk2
uefi specification
dhcpv6
unauthorized attacker
disclosure of information
system compromise
mitigation
red hat product security

8.8 High

CVSS3

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

8.2 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

20.3%

A security flaw involving buffer overflow was identified in EDK2, the open-source reference implementation of the UEFI specification. This vulnerability enables an unauthorized attacker within the vicinity network to transmit a specifically crafted DHCPv6 proxy Advertise message, resulting in the disclosure of information and potential compromise of system availability.

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.

8.8 High

CVSS3

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

8.2 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

20.3%