Ruby before 1.8.6-p114 does not reset the random seed upon forking, which makes it easier for context-dependent attackers to predict the values of random numbers by leveraging knowledge of the number sequence obtained in a different child process, a related issue to CVE-2003-0900
Published Aug 5, 2011
5.0
MEDIUMCVSS 2.0
EPSS 2.02%
Description
Ruby before 1.8.6-p114 does not reset the random seed upon forking, which makes it easier for context-dependent attackers to predict the values of random numbers by leveraging knowledge of the number sequence obtained in a different child process, a related issue to CVE-2003-0900.
Affected products
No data.
No data.
Red Hat Enterprise Linux 4
ruby-0:1.8.1-18.el4
Fixed · RHSA-2012:0070
Red Hat Enterprise Linux 5
ruby-0:1.8.5-22.el5_7.1
Fixed · RHSA-2012:0070
Red Hat Enterprise Linux 6
ruby-0:1.8.7.352-3.el6
Fixed · RHSA-2011:1581
Red Hat Hardened Images
ruby3-3-main-3.3.10-23.1.hum1
Fixed · RHSA-2026:7305
Red Hat Hardened Images
ruby3-4-main-3.4.8-31.1.hum1
Fixed · RHSA-2026:7307
Red Hat Hardened Images
ruby4-0-main-4.0.0-33.3.hum1
Fixed · RHSA-2026:8838
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 4 | ruby-0:1.8.1-18.el4 | Fixed | RHSA-2012:0070 |
| Red Hat Enterprise Linux 5 | ruby-0:1.8.5-22.el5_7.1 | Fixed | RHSA-2012:0070 |
| Red Hat Enterprise Linux 6 | ruby-0:1.8.7.352-3.el6 | Fixed | RHSA-2011:1581 |
| Red Hat Hardened Images | ruby3-3-main-3.3.10-23.1.hum1 | Fixed | RHSA-2026:7305 |
| Red Hat Hardened Images | ruby3-4-main-3.4.8-31.1.hum1 | Fixed | RHSA-2026:7307 |
| Red Hat Hardened Images | ruby4-0-main-4.0.0-33.3.hum1 | Fixed | RHSA-2026:8838 |
No package ranges for this CVE.
Remediation
Red Hat statement
The Red Hat Security Response Team has rated this issue as having low security impact, a future update may address this flaw in Red Hat Enterprise Linux 4 and 5.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:P/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.02% (0.02023) | 80.26th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.05% (0.02048) | 78.64th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.61% (0.00609) | 67.90th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.17% (0.00172) | 55.63th | v3 (v2023.03.01) |
| Jan 24, 2024 | 0.17% (0.00172) | 54.53th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.17% (0.00172) | 52.53th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.11% (0.01108) | 55.18th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.11% (0.01108) | 53.57th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.11% (0.01108) | 51.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.11% (0.01108) | 29.61th | v2 (v2022.01.01) |
References (9)
- http://redmine.ruby-lang.org/issues/show/4338 x_refsource_MISC
- http://rhn.redhat.com/errata/RHSA-2012-0070.html vendor-advisoryx_refsource_REDHAT
- http://www.openwall.com/lists/oss-security/2011/07/20/1 mailing-listx_refsource_MLISTPatch
- http://www.redhat.com/support/errata/RHSA-2011-1581.html vendor-advisoryx_refsource_REDHAT
- http://www.securityfocus.com/bid/49126 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2011-3009 Vendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/69157 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2011-3009
- https://www.cve.org/CVERecord?id=CVE-2011-3009
| Link | Providers | Tags |
|---|---|---|
| http://redmine.ruby-lang.org/issues/show/4338 | x_refsource_MISC | |
| http://rhn.redhat.com/errata/RHSA-2012-0070.html | vendor-advisoryx_refsource_REDHAT | |
| http://www.openwall.com/lists/oss-security/2011/07/20/1 | mailing-listx_refsource_MLISTPatch | |
| http://www.redhat.com/support/errata/RHSA-2011-1581.html | vendor-advisoryx_refsource_REDHAT | |
| http://www.securityfocus.com/bid/49126 | vdb-entryx_refsource_BID | |
| https://access.redhat.com/security/cve/CVE-2011-3009 | Vendor Advisory | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/69157 | vdb-entryx_refsource_XF | |
| https://nvd.nist.gov/vuln/detail/CVE-2011-3009 | ||
| https://www.cve.org/CVERecord?id=CVE-2011-3009 |
Change history (0)
No recorded changes yet.