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Fencer Vulns
high 8.3

CVE-2023-45230 json

Buffer Overflow in EDK II Network Package

published 2024-01-16 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-49536

cvss
8.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 68%
public exploits
0
none known

Summary

EDK2's Network Package is susceptible to a buffer overflow vulnerability via a long server ID option in DHCPv6 client. This vulnerability can be exploited by an attacker to gain unauthorized access and potentially lead to a loss of Confidentiality, Integrity and/or Availability.

Patch / fix

  • edk2 Debian 12 2022.11-6+deb12u1
  • edk2 Debian 14, Debian 13 2023.11-6

debian advisories DEBIAN-CVE-2023-45230

  • edk2 Ubuntu 20.04 LTS 0~20191122.bd85bf54-2ubuntu3.5
  • edk2 Ubuntu 22.04 LTS 2022.02-3ubuntu0.22.04.2

ubuntu advisories UBUNTU-CVE-2023-45230

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • edk2 RHEL 9 20230524-4.el9_3.2
  • edk2-ovmf RHEL 9 20230524-4.el9_3.2
  • edk2-tools RHEL 9 20230524-4.el9_3.2
  • edk2-aarch64 RHEL 9 20230524-4.el9_3.2
  • edk2 RHEL 8 20220126gitbb1bba3d77-6.el8_9.6
  • edk2-ovmf RHEL 8 20220126gitbb1bba3d77-6.el8_9.6
  • edk2-aarch64 RHEL 8 20220126gitbb1bba3d77-6.el8_9.6
  • edk2 RHEL 8.6 EUS 20220126gitbb1bba3d77-2.el8_6.4

red hat advisories RHSA-2024:3497RHSA-2024:1415RHSA-2024:1077RHSA-2024:1075RHSA-2024:1076RHSA-2024:1063

  • ovmf Linux Micro 6.0 202305-2.1
  • ovmf SLE Module for Confidential Computing Technical Preview 15 SP6 202308-15061.8.coco15sp6.1
  • ovmf SLES for SAP 15 SP3, SLES 15 SP3-LTSS, SLE Micro 5.2 +3 more 202008-150300.10.26.1
  • ovmf SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE Micro 5.4 +5 more 202202-150400.5.15.1
  • ovmf SLE Module for Server Applications 15 SP6, SLE Module for Package Hub 15 SP6, openSUSE Leap 15.6 202308-150600.5.9.1
  • ovmf SLES for SAP 15 SP5, SLES 15 SP5-LTSS, SLE Micro 5.5 +2 more 202208-150500.6.6.1
  • ovmf SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 2017+git1510945757.b2662641d5-3.46.1

suse advisories SUSE-SU-2026:20037-1SUSE-SU-2025:03096-1SUSE-SU-2025:03076-1SUSE-SU-2025:0752-1SUSE-SU-2025:0503-1SUSE-SU-2025:0421-1

  • ovmf openSUSE Tumbleweed 202402-1.1

opensuse advisories openSUSE-SU-2024:14199-1

  • edk2-ovmf AlmaLinux 9 20230524-4.el9_3.2.alma
  • edk2-tools AlmaLinux 9 20230524-4.el9_3.2.alma
  • edk2-aarch64 AlmaLinux 9 20230524-4.el9_3.2.alma
  • edk2-ovmf AlmaLinux 8 20220126gitbb1bba3d77-6.el8_9.6.alma
  • edk2-aarch64 AlmaLinux 8 20220126gitbb1bba3d77-6.el8_9.6.alma

almalinux advisories ALSA-2024:1075ALSA-2024:1063

  • edk2 Rocky Linux 8 20220126gitbb1bba3d77-6.el8_9.6

rocky linux advisories RLSA-2024:1063

  • edk2 Azure Linux 3.0 20240223gitedc6681206c1-1
  • edk2 CBL-Mariner 2.0 20230301gitf80f052277c8-40
  • hvloader CBL-Mariner 2.0 1.0.1-9

azure linux advisories AZL-38590AZL-39106AZL-39109

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-26-141-02 updated cvss 8.3

ABB B&R PCs

  • ABB APC910 <=1.25 ABB APC2200 <1.35 ABB APC3100 <1.45 ABB APC4100 <1.09 ABB C80 <1.14 ABB MPC3100 <1.24
    +4 more products
    ABB PPC900 <2.16 ABB PPC1200 <1.14 ABB PPC2200 <1.35 ABB PPC3100 <1.45
    affected: vendor fix, mitigation
  • ABB APC2200 1.35 ABB APC3100 1.45 ABB APC4100 1.09 ABB C80 1.14 ABB MPC3100 1.24 ABB PPC900 2.16
    +3 more products
    ABB PPC1200 1.14 ABB PPC2200 1.35 ABB PPC3100 1.45
    fixed

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

red hat product security vex CVE-2023-45230 updated cvss 8.8

edk2: Buffer overflow in the DHCPv6 client via a long Server ID option

  • Red Hat CodeReady Linux Builder (v. 9) edk2 20230524-4.el9_3.2, edk2-ovmf 20230524-4.el9_3.2, edk2-tools 20230524-4.el9_3.2, edk2-aarch64 20230524-4.el9_3.2
    fixed: vendor fix RHSA-2024:1075
  • Red Hat CodeReady Linux Builder EUS (v.9.2) edk2 20221207gitfff6d81270b5-9.el9_2.2, edk2-ovmf 20221207gitfff6d81270b5-9.el9_2.2, edk2-tools 20221207gitfff6d81270b5-9.el9_2.2, edk2-aarch64 20221207gitfff6d81270b5-9.el9_2.2
    fixed: vendor fix RHSA-2024:1076
  • Red Hat Enterprise Linux AppStream (v. 8) edk2 20220126gitbb1bba3d77-6.el8_9.6, edk2-ovmf 20220126gitbb1bba3d77-6.el8_9.6, edk2-aarch64 20220126gitbb1bba3d77-6.el8_9.6
    fixed: vendor fix RHSA-2024:1063
  • Red Hat Enterprise Linux AppStream (v. 9) edk2 20230524-4.el9_3.2, edk2-ovmf 20230524-4.el9_3.2, edk2-tools 20230524-4.el9_3.2, edk2-aarch64 20230524-4.el9_3.2
    fixed: vendor fix RHSA-2024:1075
  • Red Hat Enterprise Linux AppStream AUS (v. 8.2) edk2 20190829git37eef91017ad-9.el8_2.3, edk2-ovmf 20190829git37eef91017ad-9.el8_2.3
    fixed: vendor fix RHSA-2024:1004
  • Red Hat Enterprise Linux AppStream AUS (v.8.4) edk2 20200602gitca407c7246bf-4.el8_4.4, edk2-ovmf 20200602gitca407c7246bf-4.el8_4.4
    fixed: vendor fix RHSA-2024:1013
  • Red Hat Enterprise Linux AppStream E4S (v. 8.2) edk2 20190829git37eef91017ad-9.el8_2.3, edk2-ovmf 20190829git37eef91017ad-9.el8_2.3
    fixed: vendor fix RHSA-2024:1004
  • Red Hat Enterprise Linux AppStream E4S (v.8.4) edk2 20200602gitca407c7246bf-4.el8_4.4, edk2-ovmf 20200602gitca407c7246bf-4.el8_4.4
    fixed: vendor fix RHSA-2024:1013
show 6 more
  • Red Hat Enterprise Linux AppStream EUS (v.8.6) edk2 20220126gitbb1bba3d77-2.el8_6.4, edk2-ovmf 20220126gitbb1bba3d77-2.el8_6.4, edk2-aarch64 20220126gitbb1bba3d77-2.el8_6.4
    fixed: vendor fix RHSA-2024:3497
  • Red Hat Enterprise Linux AppStream EUS (v.8.8) edk2 20220126gitbb1bba3d77-4.el8_8.3, edk2-ovmf 20220126gitbb1bba3d77-4.el8_8.3, edk2-aarch64 20220126gitbb1bba3d77-4.el8_8.3
    fixed: vendor fix RHSA-2024:1415
  • Red Hat Enterprise Linux AppStream EUS (v.9.0) edk2 20220126gitbb1bba3d77-3.el9_0.4, edk2-ovmf 20220126gitbb1bba3d77-3.el9_0.4, edk2-aarch64 20220126gitbb1bba3d77-3.el9_0.4
    fixed: vendor fix RHSA-2024:1077
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) edk2 20221207gitfff6d81270b5-9.el9_2.2, edk2-ovmf 20221207gitfff6d81270b5-9.el9_2.2, edk2-tools 20221207gitfff6d81270b5-9.el9_2.2, edk2-aarch64 20221207gitfff6d81270b5-9.el9_2.2
    fixed: vendor fix RHSA-2024:1076
  • Red Hat Enterprise Linux AppStream TUS (v. 8.2) edk2 20190829git37eef91017ad-9.el8_2.3, edk2-ovmf 20190829git37eef91017ad-9.el8_2.3
    fixed: vendor fix RHSA-2024:1004
  • Red Hat Enterprise Linux AppStream TUS (v.8.4) edk2 20200602gitca407c7246bf-4.el8_4.4, edk2-ovmf 20200602gitca407c7246bf-4.el8_4.4
    fixed: vendor fix RHSA-2024:1013

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

1.21% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.3 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H
NVD 3.1 8.8 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • TianoCore edk2

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.