CVE-2009-4124

Name: CVE-2009-4124
Creator: NVD / NIST
Published: 2009-12-11T16:30:00.267+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.88%

Last modified Jun 16, 2026

CVE-2009-4124 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 3.88% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability

3.88%

88.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions	Update
Ruby-Lang	Ruby	1.9.1	-P0

References

http://secunia.com/advisories/37660Vendor Advisory
http://www.osvdb.org/60880
http://www.ruby-lang.org/en/news/2009/12/07/heap-overflow-in-string/Patch, Vendor Advisory
http://www.securityfocus.com/bid/37278
http://www.vupen.com/english/advisories/2009/3471Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/54674
http://secunia.com/advisories/37660Vendor Advisory
http://www.osvdb.org/60880
http://www.ruby-lang.org/en/news/2009/12/07/heap-overflow-in-string/Patch, Vendor Advisory
http://www.securityfocus.com/bid/37278
http://www.vupen.com/english/advisories/2009/3471Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/54674

Timeline

Published: Dec 11, 2009
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2009-4124?

How severe is CVE-2009-4124?

Severity scoring for CVE-2009-4124 is pending analysis. The EPSS model estimates a 3.88% probability of exploitation in the next 30 days.

How do I fix CVE-2009-4124?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2009-4124?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST