Buffer Overflow in EDK II Network Package
Priority MEDIUM 40CWE-119Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-119 and the CVSS impact.
Summary
EDK2's Network Package is susceptible to a buffer overflow vulnerability when processing DNS Servers option from a DHCPv6 Advertise message. This vulnerability can be exploited by an attacker to gain unauthorized access and potentially lead to a loss of Confidentiality, Integrity and/or Availability.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01186 68th percentileScored 2026-11-07
Fix Fixed Red Hat: 8 advisories
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
Red Hat 8 advisories
- RHSA-2024:3497 Released 2024-05-30 · Red Hat rating Importantedk2 security update
- Red Hat Enterprise Linux AppStream EUS (v.8.6) edk2-20220126gitbb1bba3d77-2.el8_6.4, edk2-aarch64-20220126gitbb1bba3d77-2.el8_6.4, edk2-ovmf-20220126gitbb1bba3d77-2.el8_6.4
- RHSA-2024:1722 Released 2024-04-09 · Red Hat rating Importantedk2 security update
- Red Hat Enterprise Linux AppStream AUS (v. 8.2) edk2-20190829git37eef91017ad-9.el8_2.4, edk2-ovmf-20190829git37eef91017ad-9.el8_2.4
- Red Hat Enterprise Linux AppStream E4S (v. 8.2) edk2-20190829git37eef91017ad-9.el8_2.4, edk2-ovmf-20190829git37eef91017ad-9.el8_2.4
- Red Hat Enterprise Linux AppStream TUS (v. 8.2) edk2-20190829git37eef91017ad-9.el8_2.4, edk2-ovmf-20190829git37eef91017ad-9.el8_2.4
- RHSA-2024:1415 Released 2024-03-19 · Red Hat rating Importantedk2 security update
- Red Hat Enterprise Linux AppStream EUS (v.8.8) edk2-20220126gitbb1bba3d77-4.el8_8.3, edk2-aarch64-20220126gitbb1bba3d77-4.el8_8.3, edk2-ovmf-20220126gitbb1bba3d77-4.el8_8.3
Show 5 more Red Hat advisories
- RHSA-2024:1305 Released 2024-03-13 · Red Hat rating Importantedk2 security update
- Red Hat Enterprise Linux AppStream AUS (v.8.4) edk2-20200602gitca407c7246bf-4.el8_4.5, edk2-ovmf-20200602gitca407c7246bf-4.el8_4.5
- Red Hat Enterprise Linux AppStream E4S (v.8.4) edk2-20200602gitca407c7246bf-4.el8_4.5, edk2-ovmf-20200602gitca407c7246bf-4.el8_4.5
- Red Hat Enterprise Linux AppStream TUS (v.8.4) edk2-20200602gitca407c7246bf-4.el8_4.5, edk2-ovmf-20200602gitca407c7246bf-4.el8_4.5
- RHSA-2024:1076 Released 2024-03-05 · Red Hat rating Importantedk2 security update
- Red Hat CodeReady Linux Builder EUS (v.9.2) edk2-aarch64-20221207gitfff6d81270b5-9.el9_2.2, edk2-ovmf-20221207gitfff6d81270b5-9.el9_2.2, edk2-tools-20221207gitfff6d81270b5-9.el9_2.2 +1
- Red Hat Enterprise Linux AppStream EUS (v.9.2) edk2-20221207gitfff6d81270b5-9.el9_2.2, edk2-aarch64-20221207gitfff6d81270b5-9.el9_2.2, edk2-ovmf-20221207gitfff6d81270b5-9.el9_2.2
- RHSA-2024:1077 Released 2024-03-05 · Red Hat rating Importantedk2 security update
- Red Hat Enterprise Linux AppStream EUS (v.9.0) edk2-20220126gitbb1bba3d77-3.el9_0.4, edk2-aarch64-20220126gitbb1bba3d77-3.el9_0.4, edk2-ovmf-20220126gitbb1bba3d77-3.el9_0.4
- RHSA-2024:1075 Released 2024-03-05 · Red Hat rating Importantedk2 security update
- Red Hat CodeReady Linux Builder (v. 9) edk2-aarch64-20230524-4.el9_3.2, edk2-ovmf-20230524-4.el9_3.2, edk2-tools-20230524-4.el9_3.2 +1
- Red Hat Enterprise Linux AppStream (v. 9) edk2-20230524-4.el9_3.2, edk2-aarch64-20230524-4.el9_3.2, edk2-ovmf-20230524-4.el9_3.2
- RHSA-2024:1063 Released 2024-03-04 · Red Hat rating Importantedk2 security update
- Red Hat Enterprise Linux AppStream (v. 8) edk2-20220126gitbb1bba3d77-6.el8_9.6, edk2-aarch64-20220126gitbb1bba3d77-6.el8_9.6, edk2-ovmf-20220126gitbb1bba3d77-6.el8_9.6
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
TianoCore edk2 — github.com/tianocore/edk2/security/advisories/GHSA-hc6x-cw6…
5 records Highest priority Priority HIGH 1 HIGH, 3 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2023-24238 Infinite loop in EDK II Network PackagePriority HIGH 74
- TI-2023-24236 Out-of-Bounds Read in EDK II Network PackagePriority MEDIUM 62
- TI-2023-24237 Infinite loop in EDK II Network PackagePriority MEDIUM 43
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat CodeReady Linux Builder (v. 9) | Fixed | RHSA-2024:1075 |
| Red Hat CodeReady Linux Builder EUS (v.9.2) | Fixed | RHSA-2024:1076 |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2024:1063 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2024:1075 |
| Red Hat Enterprise Linux AppStream AUS (v. 8.2) | Fixed | RHSA-2024:1722 |
| Red Hat Enterprise Linux AppStream AUS (v.8.4) | Fixed | RHSA-2024:1305 |
| Red Hat Enterprise Linux AppStream E4S (v. 8.2) | Fixed | RHSA-2024:1722 |
| Red Hat Enterprise Linux AppStream E4S (v.8.4) | Fixed | RHSA-2024:1305 |
| Red Hat Enterprise Linux AppStream EUS (v.8.6) | Fixed | RHSA-2024:3497 |
| Red Hat Enterprise Linux AppStream EUS (v.8.8) | Fixed | RHSA-2024:1415 |
| Red Hat Enterprise Linux AppStream EUS (v.9.0) | Fixed | RHSA-2024:1077 |
| Red Hat Enterprise Linux AppStream EUS (v.9.2) | Fixed | RHSA-2024:1076 |
| Red Hat Enterprise Linux AppStream TUS (v. 8.2) | Fixed | RHSA-2024:1722 |
| Red Hat Enterprise Linux AppStream TUS (v.8.4) | Fixed | RHSA-2024:1305 |
Timeline
- 2026-10-02 Threatist record created from CVE-2023-45234
- 2026-10-03 Alias added: GHSA-mrjv-p9q7-rxgr
References
Advisory 2
More TianoCore Edk2 vulnerabilities
- TI-2026-79288 Out-of-bounds write in Google Brotli decoder KEVCVSS 4.0CRITICAL 9.2
- TI-2023-24240 Buffer Overflow in EDK II Network Package CVSS 3.1HIGH 8.8
- TI-2023-24238 Infinite loop in EDK II Network Package CVSS 3.1HIGH 7.5
- TI-2023-24235 Buffer Overflow in EDK II Network Package CVSS 3.1HIGH 8.8
- TI-2023-26565 An insecure default to allow UEFI Shell in EDK2 was left enabled in Ubuntu's EDK2. CVSS 3.1MEDIUM 6.7
- TI-2023-24236 Out-of-Bounds Read in EDK II Network Package CVSS 3.1MEDIUM 6.5
Sources
- CVE-2023-45234 · CVE Program
- CVE-2023-45234 · NVD
- FIRST EPSS
- GHSA-mrjv-p9q7-rxgr · GitHub Advisory Database · CC BY 4.0
- CVE-2023-45234 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences