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CVE-2009-1904

MediumPublished

The BigDecimal library in Ruby 1.8.6 before p369 and 1.8.7 before p173 allows context-dependent attackers to cause a denial of service (application crash)...

Published: Jun 11, 2009
Updated: Aug 7, 2024
Assigning CNA: mitre
Evidence observed: Aug 5, 2026

Primary CVSS

5.0/ 10Medium

nvd · CVSS 2.0

AV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS probability estimate

12.8%

Moderate · next 30 days

Percentile: 96.2%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

The BigDecimal library in Ruby 1.8.6 before p369 and 1.8.7 before p173 allows context-dependent attackers to cause a denial of service (application crash) via a string argument that represents a large number, as demonstrated by an attempted conversion to the Float data type.

Sources

bigdecimal-segfault-fixPatch
Provides a quick workaround for the segfault bug in Ruby (CVE-2009-1904)

Responsible use

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