{"id":27308,"date":"2025-04-19T19:17:52","date_gmt":"2025-04-19T19:17:52","guid":{"rendered":""},"modified":"2025-10-02T23:37:24","modified_gmt":"2025-10-03T05:37:24","slug":"cve-2023-45235-buffer-overflow-vulnerability-in-edk2-s-network-package","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2023-45235-buffer-overflow-vulnerability-in-edk2-s-network-package\/","title":{"rendered":"CVE-2023-45235: Buffer Overflow Vulnerability in EDK2’s Network Package<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

The cybersecurity landscape is constantly evolving with new vulnerabilities being discovered frequently. Among the latest is CVE-2023-45235, a substantial buffer overflow vulnerability found in EDK2’s Network Package that affects how it handles the Server ID option from a DHCPv6 proxy Advertise message. This vulnerability is significant as it can be exploited by attackers to gain unauthorized access<\/a> to systems. Given the ubiquity of network devices and their role in modern infrastructures, a vulnerability like this can pose serious security risks, potentially leading to system<\/a> compromise and data leakage.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2023-45235
\nSeverity: High (8.3 CVSS Score)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Unauthorized access, potential system<\/a> compromise, and data leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

EDK2 Network Package | All versions prior<\/a> to patch<\/p>\n

How the Exploit Works<\/strong><\/p>\n

The vulnerability stems from a flaw in the Network<\/a> Package’s handling of the Server ID option from a DHCPv6 proxy Advertise message. When the package processes this data, a buffer overflow<\/a> can occur. This happens when more data is put<\/a> into a buffer than it can handle, causing an overflow of data. The excess data can overwrite adjacent memory locations, leading to erratic program behavior, crashes, or, in the worst-case scenario, the execution of malicious code<\/a>. An attacker can exploit this flaw by sending a specially crafted DHCPv6 proxy Advertise message to trigger the overflow and gain unauthorized access to the system<\/a>.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

Here’s a conceptual example of how the vulnerability might be exploited<\/a>. In this case, an attacker could craft a malicious DHCPv6 proxy Advertise message to trigger the buffer overflow<\/a>:<\/p>\n

POST \/DHCPv6\/Advertise HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/dhcp\n{\n\"server_id\": \"OVERFLOW DATA\"\n}<\/code><\/pre>\n
In the above example, “OVERFLOW DATA” represents a large amount of data designed to exceed the buffer limit, causing overflow and potentially executing malicious code<\/a>.
\nPlease note that this is a simplified and conceptual example. Real-world exploits would likely be more complex and could involve additional techniques such as heap spraying or return-oriented programming.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview The cybersecurity landscape is constantly evolving with new vulnerabilities being discovered frequently. Among the latest is CVE-2023-45235, a substantial buffer overflow vulnerability found in EDK2’s Network Package that affects how it handles the Server ID option from a DHCPv6 proxy Advertise message. This vulnerability is significant as it can be exploited by attackers to […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[],"product":[],"attack_vector":[86],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-27308","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t