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Vulnerability DatabaseCVE-2025-27837

CVE-2025-27837: 
Ghostscript vulnerability analysis and mitigation

Overview

An issue was discovered in Artifex Ghostscript before version 10.05.0, identified as CVE-2025-27837. The vulnerability allows access to arbitrary files through a truncated path with invalid UTF-8 characters, specifically affecting the base/gpmswin.c and base/winrtsup.cpp components. The vulnerability was discovered on January 7, 2025, and publicly disclosed on March 25, 2025 (NVD, [Ghostscript Bug](https://bugs.ghostscript.com/showbug.cgi?id=708238)).

Technical details

The vulnerability stems from improper validation of return values in the gpmswin.c:gpopenscratchfileimpl function. Specifically, the gputf8touint16 function can fail, leaving the output buffer with only a partially decoded path. The issue is classified as CWE-22 (Improper Limitation of a Pathname to a Restricted Directory) and has received a CVSS v3.1 base score of 9.8 CRITICAL (Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) (NVD).

Impact

The vulnerability could allow attackers to access arbitrary files on affected systems. The bug particularly impacts Windows-specific codepaths, potentially enabling unauthorized file access through manipulated UTF-8 character sequences (Debian Tracker, Ubuntu Security).

Mitigation and workarounds

The vulnerability has been fixed in Ghostscript version 10.05.0. The fix includes proper checking of error codes and returned lengths in the Windows-specific platform code, mswinpr2 printer, and ICC parameter parsing. The patch also removes unnecessary dynamic allocation and corrects the return value behavior of GetTempFileNameWRT (Ghostscript Bug).

Additional resources

Source: This report was generated using AI

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