CVE-2024-7973: 
vulnerability analysis and mitigation

A heap buffer overflow vulnerability (CVE-2024-7973) was discovered in PDFium component of Google Chrome versions prior to 128.0.6613.84. The vulnerability was reported by security researcher soiax on June 6, 2024, and was assigned a Medium severity rating by the Chromium security team (Chrome Release).

The vulnerability is classified as a heap-based buffer overflow (CWE-122) that allows an attacker to perform an out-of-bounds memory read through a specially crafted PDF file. The vulnerability has been assigned a CVSS v3.1 base score of 8.8 (HIGH) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, indicating that it can be exploited remotely with low attack complexity, requires user interaction, and could potentially impact confidentiality, integrity, and availability (NVD).

If successfully exploited, this vulnerability could allow an attacker to perform an out-of-bounds memory read, potentially leading to information disclosure or system compromise. The high CVSS score indicates significant potential impact on system confidentiality, integrity, and availability (NVD).

The vulnerability requires user interaction, specifically opening a crafted PDF file, to be exploited. It can be triggered remotely through network access, making it accessible to remote attackers. No evidence of active exploitation in the wild has been reported for this specific vulnerability (Chrome Release).

The vulnerability has been fixed in Google Chrome version 128.0.6613.84 and later. Users are advised to update their Chrome browsers to the latest version to mitigate this security risk (Chrome Release).