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CVE-2009-5147

28
FAUCET Score

CVE-2009-5147 describes a vulnerability in Ruby versions 1.8, 1.9.0, 1.9.2, 1.9.3, 2.0.0 (before patchlevel 648), and 2.1 (before 2.1.8), where the DL::dlopen function opens libraries using tainted names. This allows for arbitrary code execution due to improper input validation. The vulnerability carries a high CVSS score of 7.3, indicating a significant risk with low attack complexity and potential for partial confidentiality, integrity, and availability impacts. Despite its age and high severity, there is no known active exploitation, publicly available exploit code in Metasploit or ExploitDB, nor significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.8.0CPE matchmatch criteria
cpe:2.3:a:ruby-lang:ruby:1.8.0:*:*:*:*:*:*:*
1.9.0CPE matchmatch criteria
cpe:2.3:a:ruby-lang:ruby:1.9.0:*:*:*:*:*:*:*
1.9.2CPE matchmatch criteria
cpe:2.3:a:ruby-lang:ruby:1.9.2:*:*:*:*:*:*:*
1.9.3CPE matchmatch criteria
cpe:2.3:a:ruby-lang:ruby:1.9.3:*:*:*:*:*:*:*
2.0.0CPE matchmatch criteria
cpe:2.3:a:ruby-lang:ruby:2.0.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.3HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
3.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
7.77%
Probability of exploitation in next 30 days
EPSS Percentile
94.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0777 is in the 90th percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (16)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: rh-ruby22-ruby-0:2.2.9-19.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUSFixed in: rh-ruby22-ruby-0:2.2.9-19.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-ruby22-ruby-0:2.2.9-19.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUSFixed in: rh-ruby22-ruby-0:2.2.9-19.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUSFixed in: rh-ruby22-ruby-0:2.2.9-19.el7
View patch
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: ruby200-ruby
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: ruby
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: ruby
redhatend of lifevia redhat_api
Product: CloudForms Management Engine 5Fixed in: ruby193-ruby
redhatend of lifevia redhat_api
Product: Red Hat Subscription Asset ManagerFixed in: ruby193-ruby
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: ruby
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: ruby
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-ruby22-ruby
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: ruby193-ruby

Vendor Advisories (1)

redhatCVE-2009-5147Low

ruby: DL:: dlopen could open a library with tainted library name

May 11, 2009

References

access.redhat.com / errata/RHSA-2018:0583
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party AdvisoryVDB Entry
seclists.org / oss-sec/2015/q3/222
PatchThird Party AdvisoryVDB Entry
github.com / ruby/ruby/commit/4600cf725a86ce31266153647ae5aa1197b1215b
PatchThird Party Advisory
ruby-lang.org / en/news/2015/12/16/unsafe-tainted-string-usage-in-fiddle-and-dl-cve-2015-7551
Vendor Advisory
securityfocus.com / bid/76060
Third Party AdvisoryVDB Entry