Name: CVE-2009-4124: Improper Restriction of Operations within the Bounds of a Memory Buffer
Creator: Rapid7
Published: 2009-12-11T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2009-4124, CWE-119, CVSS 9.8, EPSS 0.02052

Heap-based buffer overflow in the rb_str_justify function in string.c in Ruby 1.9.1 before 1.9.1-p376 allows context-dependent attackers to execute arbitrary code via unspecified vectors involving (1) String#ljust, (2) String#center, or (3) String#rjust. NOTE: some of these details are obtained from third party information.

CVSS Details

CVSS 3.1 Base Score: 9.8

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Freebsd	—	Upgrade ruby	Dec 10, 2025	Dec 9, 2009
Ubuntu	—	Upgrade ruby1.9Upgrade libruby1.9	Nov 8, 2024	Dec 11, 2009

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CVSS Details

Covered by Rapid7

Prioritize with Active Threat Intelligence