Advisory Details

This vulnerability allows remote attackers to execute arbitrary code on affected installations of IrfanView. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the parsing of PSP files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

Fixed in the new Formats plugin
https://www.irfanview.com/plugins.htm#PlugIns%20updated%20after%20the%20version%204.67:

• 2024-05-09 - Vulnerability reported to vendor
• 2024-06-12 - Coordinated public release of advisory
• 2024-08-15 - Advisory Updated