CVE-2023-4504

A vulnerability was found in CUPS and libppd, where a failure to validate the length provided in an attacker-crafted PPD PostScript document can lead to a heap-based buffer overflow, causing a denial of service or, in some cases, execute arbitrary code, depending on how the application processes untrusted PPD files.

This vulnerability is rated as moderate because a heap-based buffer overflow in CUPS and libppd, caused by improper length validation in attacker-crafted PPD PostScript documents, could lead to application crashes or potential code execution, successful exploitation depends on specific conditions, such as the application's processing of untrusted PPD files, limiting the overall impact in most cases.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

For a successful attack, the victim had to install a PPD file (driver) that contains the crafted PS sequence, which triggers the issue. It is not recommended to install drivers from unreliable sources.