Memory corruption via Type 4 size counter overflow
Published Mar 25, 2025 · Updated Mar 26, 2025
Buffer overflow in Artifex Ghostscript before 10.05.0 allows context-dependent attackers to corrupt memory via a crafted PDF. In pdf/pdf_func.c, Type 4 function parsing lets an unsigned size counter wrap, so the size-plus-one allocation can be smaller than the decoded operations written into it. The document must be processed by the PDF interpreter; the resulting out-of-bounds write can corrupt memory and interrupt the interpreter process.
Summary
What happened
Buffer overflow in Artifex Ghostscript before 10.05.0 allows context-dependent attackers to corrupt memory via a crafted PDF. In pdf/pdf_func.c, Type 4 function parsing lets an unsigned size counter wrap, so the size-plus-one allocation can be smaller than the decoded operations written into it. The document must be processed by the PDF interpreter; the resulting out-of-bounds write can corrupt memory and interrupt the interpreter process.
The record
- CVE
- CVE-2025-27834
- Published
- Mar 25, 2025
- Updated
- Mar 26, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-120
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 25, 2025CVE publishedPublication date reported by the CVE source.
- Mar 26, 2025Record updatedLatest update available in the CVE record.
Exploitability
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What is affected?
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Published CVSS scores
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Attacks
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Weakness, pattern, technique
Public exploit references
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Technologies
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