CVE-2024-6817: 
IrfanView vulnerability analysis and mitigation

CVE-2024-6817 is a remote code execution vulnerability discovered in IrfanView software, specifically affecting version 4.66 for x64 systems. The vulnerability was initially reported on February 13, 2024, and was publicly disclosed on July 26, 2024. This security flaw exists within the parsing of PSP files in IrfanView, allowing remote attackers to execute arbitrary code on affected installations (ZDI Advisory).

The vulnerability stems from an out-of-bounds write issue during PSP file parsing. The specific flaw results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. The vulnerability has been assigned a CVSS v3.1 base score of 7.8 (HIGH) with the vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H (ZDI Advisory, NVD).

If successfully exploited, this vulnerability allows attackers to execute arbitrary code in the context of the current process. The high CVSS score indicates that successful exploitation could lead to a complete compromise of the affected system's confidentiality, integrity, and availability (ZDI Advisory).

The vulnerability has been fixed with the release of an updated formats plugin. Users are advised to download and install the latest formats plugin from https://www.irfanview.net/plugins/formats_64.zip to mitigate this vulnerability (ZDI Advisory).