CVE-2023-45235: edk2 Buffer Overflow — Fix

Description

EDK2's Network Package is susceptible to a buffer overflow vulnerability when handling Server ID option from a DHCPv6 proxy 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.

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CVSS v3.1 Score

8.3

HIGH

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

Weakness Type (CWE)

CWE-119 Buffer Overflow

Affected Products

Vendor	Product	Versions
tianocore	edk2	< 202311

References

Advisories & Patches

https://github.com/tianocore/edk2/security/advisories/GHSA-hc6x-cw6p-gj7h https://github.com/tianocore/edk2/security/advisories/GHSA-hc6x-cw6p-gj7h

Other References

http://packetstormsecurity.com/files/176574/PixieFail-Proof-Of-Concepts.html http://www.openwall.com/lists/oss-security/2024/01/16/2 https://lists.fedoraproject.org/archives/list/[email protected]/message/SJ42V7O7F4OU6R7QSQQECLB6LDHKZIMQ/ https://security.netapp.com/advisory/ntap-20240307-0011/ http://packetstormsecurity.com/files/176574/PixieFail-Proof-Of-Concepts.html http://www.openwall.com/lists/oss-security/2024/01/16/2 https://lists.debian.org/debian-lts-announce/2025/06/msg00007.html https://lists.fedoraproject.org/archives/list/[email protected]/message/SJ42V7O7F4OU6R7QSQQECLB6LDHKZIMQ/ https://security.netapp.com/advisory/ntap-20240307-0011/ https://www.kb.cert.org/vuls/id/132380

Frequently Asked Questions

What is CVE-2023-45235? +

EDK2's Network Package is susceptible to a buffer overflow vulnerability when handling Server ID option from a DHCPv6 proxy 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. It has a CVSS v3.1 base score of 8.3 (HIGH).

How severe is CVE-2023-45235? +

CVE-2023-45235 has a CVSS v3.1 score of 8.3 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2023-45235? +

CVE-2023-45235 affects products from tianocore, specifically: edk2. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-45235? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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