Vulnerability Report

CVE-2009-5147

Title: Ruby-Lang Ruby Improper Input Validation

Input Validation Error

Proof Of Concept

PoC Available for CVE-2009-5147

CWE Category CWE-20

Published Date Mar 29, 2017

Modified Date May 13, 2026

Exploit Status Available

Score 7.3 CVSS v3.0

Exploit Probability (EPSS)

56.22%

Vulnerability Summary

CVE-2009-5147: DL::dlopen in Ruby 1.8, 1.9.0, 1.9.2, 1.9.3, 2.0.0 before patchlevel 648, and 2.1 before 2.1.8 opens libraries with tainted names.

Impacted Vendors

yukihiro_matsumoto 1

ruby-lang 1

Reference Links

http://seclists.org/oss-sec/2015/q3/222 http://www.securityfocus.com/bid/76060 https://access.redhat.com/errata/RHSA-2018:0583 https://bugzilla.redhat.com/show_bug.cgi?id=1248935 https://github.com/ruby/ruby/commit/4600cf725a86ce31266153647ae5aa1197b1215b https://www.ruby-lang.org/en/news/2015/12/16/unsafe-tainted-string-usage-in-fiddle-and-dl-cve-2015-7551/ http://seclists.org/oss-sec/2015/q3/222 http://www.securityfocus.com/bid/76060 https://access.redhat.com/errata/RHSA-2018:0583 https://bugzilla.redhat.com/show_bug.cgi?id=1248935 https://github.com/ruby/ruby/commit/4600cf725a86ce31266153647ae5aa1197b1215b https://www.ruby-lang.org/en/news/2015/12/16/unsafe-tainted-string-usage-in-fiddle-and-dl-cve-2015-7551/

CVSS v3.0

Source Entity [email protected]

Severity HIGH

7.3

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS v2.0

Source Entity [email protected]

Severity HIGH

7.5

Access Vector

N/A

Authentication

N/A

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

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2009-5147 Exploits & PoCs (Proof Of Concept)

GitHub https://github.com/vpereira/CVE-2009-5147

View Code

GitHub https://github.com/zhangyongbo100/-Ruby-dl-handle.c-CVE-2009-5147-

View Code

May 13, 2026 MODIFIED