Dompdf: Uncontrolled resource consumption based on declared BMP dimensions
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
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| dompdf | dompdf | affected |
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No data.
| Vendor | Product | Versions | ||||||||
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| Dompdf | Dompdf |
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| Source | ID | Title |
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Github GHSA |
GHSA-8hg6-c449-896m | Dompdf: Uncontrolled resource consumption based on declared BMP dimensions |
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.644% probability within 30 days)
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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| Type | Values Removed | Values Added |
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| First Time appeared |
Dompdf
Dompdf dompdf |
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| Vendors & Products |
Dompdf
Dompdf dompdf |
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| Description | Dompdf is an HTML to PDF converter for PHP. Versions 3.15 and prior accept a BMP image and generates a PDF-compatible PNG based only on its declared header dimensions and never bounds width × height before the image is converted through GD. A 58-byte BMP whose header declares e.g. 6000×6000 is accepted and later drives imagecreatetruecolor($width, $height) (and PHP's native BMP decoder) to allocate the full pixel canvas. A payload can fit in a single HTTP request: the BMP can be inlined as a data:image/bmp;base64,… URI inside attacker-controlled HTML, so no upload, no remote fetch, and no chroot-reachable file is required. I measured a 169-byte request driving a dompdf render to ~412 MB peak RSS and ~4.8 s of CPU/wall time, versus ~34 MB for an identically-sized benign request — roughly a 12× memory amplification per request, repeatable and unauthenticated. This issue has been fixed in version 3.16. | |
| Title | Dompdf: Uncontrolled resource consumption based on declared BMP dimensions | |
| Weaknesses | CWE-400 | |
| References |
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| Metrics |
cvssV4_0
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