Bug 2354963 (CVE-2025-27831) - CVE-2025-27831 Ghostscript: Text buffer overflow with long characters
Summary: CVE-2025-27831 Ghostscript: Text buffer overflow with long characters
Keywords:
Status: NEW
Alias: CVE-2025-27831
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2355007 2355008
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-03-25 21:01 UTC by OSIDB Bzimport
Modified: 2025-04-04 08:00 UTC (History)
1 user (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)
Demo exploit document which opens Gnome calculator on Fedora 41 (12.54 KB, application/zip)
2025-04-04 08:00 UTC, Alexander Neumann 		no flags Details
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Description OSIDB Bzimport 2025-03-25 21:01:48 UTC 
An issue was discovered in Artifex Ghostscript before 10.05.0. The DOCXWRITE TXTWRITE device has a text buffer overflow via long characters to devices/vector/doc_common.c.
Comment 2 Alexander Neumann 2025-04-04 08:00:17 UTC 
Why is this issue only rated a medium risk? It is highly critical: receiving a document via email and opening it with LibreOffice directly leads to embedded code being executed!

The needed exploit code is public, I'll attached a demo.odt document for you to try, it only opens Gnome Calculator.

For Fedora 41 (stable) there's already a patched version of Ghostscript in testing, can you please expedite the move to stable? Thank you very much!
Comment 3 Alexander Neumann 2025-04-04 08:00:51 UTC 
Created attachment 2083389 [details]
Demo exploit document which opens Gnome calculator on Fedora 41
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