ruby: use of predictable source port and transaction id in DNS requests done by resolv.rb module
Published Sep 4, 2008
5.8
MEDIUMCVSS 2.0
EPSS 2.42%
Description
resolv.rb in Ruby 1.8.5 and earlier, 1.8.6 before 1.8.6-p287, 1.8.7 before 1.8.7-p72, and 1.9 r18423 and earlier uses sequential transaction IDs and constant source ports for DNS requests, which makes it easier for remote attackers to spoof DNS responses, a different vulnerability than CVE-2008-1447.
Affected products
No data.
- ≤ 1.8.5
- ≤ 1.8.6
- ≤ 1.8.7
- ≤ 1.9
- 1.6
- 1.6.8
- 1.8.0
- 1.8.1
- 1.8.2
- 1.8.3
- 1.8.4
- 1.8.6
- 1.8.6
- 1.8.6
- 1.8.6
- 1.8.6
- 1.8.6
- 1.8.6
- 1.8.6
- 1.8.6
- 1.8.7
- 1.8.7
- 1.8.7
- 1.8.7
- 1.8.7
- 1.8.7
- 1.8.7
No data.
Red Hat Enterprise Linux 3
ruby-0:1.6.8-13.el3
Fixed · RHSA-2008:0896
Red Hat Enterprise Linux 4
ruby-0:1.8.1-7.el4_7.1
Fixed · RHSA-2008:0897
Red Hat Enterprise Linux 5
ruby-0:1.8.5-5.el5_2.5
Fixed · RHSA-2008:0897
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 3 | ruby-0:1.6.8-13.el3 | Fixed | RHSA-2008:0896 |
| Red Hat Enterprise Linux 4 | ruby-0:1.8.1-7.el4_7.1 | Fixed | RHSA-2008:0897 |
| Red Hat Enterprise Linux 5 | ruby-0:1.8.5-5.el5_2.5 | Fixed | RHSA-2008:0897 |
| 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
No remediation recorded yet.
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:M/Au:N/C:N/I:P/A:P
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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.42% (0.02415) | 83.54th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.44% (0.02435) | 82.08th | v5 (v2026.06.15) |
| Mar 30, 2025 | 3.39% (0.03394) | 86.27th | v4 (v2025.03.14) |
| Mar 29, 2025 | 7.65% (0.07646) | 86.18th | v4 (v2025.03.14) |
| Mar 17, 2025 | 3.39% (0.03394) | 86.57th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.04% (0.01039) | 84.61th | v3 (v2023.03.01) |
| Mar 6, 2024 | 0.92% (0.00915) | 82.41th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.92% (0.00915) | 80.40th | v3 (v2023.03.01) |
| Mar 6, 2023 | 4.36% (0.04358) | 88.02th | v2 (v2022.01.01) |
| Apr 1, 2022 | 4.36% (0.04358) | 86.83th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.36% (0.04358) | 70.59th | v2 (v2022.01.01) |
References (28)
- http://secunia.com/advisories/31430 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/32165 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/32219 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/32255 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/32256 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/32371 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/32948 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/33178 third-party-advisoryx_refsource_SECUNIA
- http://security.gentoo.org/glsa/glsa-200812-17.xml vendor-advisoryx_refsource_GENTOO
- http://slackware.com/security/viewer.php?l=slackware-security&y=2008&m=slackware-security.371754 vendor-advisoryx_refsource_SLACKWARE
- http://support.avaya.com/elmodocs2/security/ASA-2008-424.htm x_refsource_CONFIRM
- http://www.debian.org/security/2008/dsa-1651 vendor-advisoryx_refsource_DEBIAN
- http://www.debian.org/security/2008/dsa-1652 vendor-advisoryx_refsource_DEBIAN
- http://www.openwall.com/lists/oss-security/2008/09/03/3 mailing-listx_refsource_MLISTExploit
- http://www.openwall.com/lists/oss-security/2008/09/04/9 mailing-listx_refsource_MLIST
- http://www.redhat.com/support/errata/RHSA-2008-0897.html vendor-advisoryx_refsource_REDHAT
- http://www.ruby-lang.org/en/news/2008/08/08/multiple-vulnerabilities-in-ruby/ x_refsource_CONFIRMPatch
- http://www.securityfocus.com/bid/31699 vdb-entryx_refsource_BID
- http://www.vupen.com/english/advisories/2008/2334 vdb-entryx_refsource_VUPEN
- https://access.redhat.com/security/cve/CVE-2008-3905 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=461495 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/45935 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2008-3905
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10034 vdb-entrysignaturex_refsource_OVAL
- https://usn.ubuntu.com/651-1/ vendor-advisoryx_refsource_UBUNTU
- https://www.cve.org/CVERecord?id=CVE-2008-3905
- https://www.redhat.com/archives/fedora-package-announce/2008-October/msg00259.html vendor-advisoryx_refsource_FEDORA
- https://www.redhat.com/archives/fedora-package-announce/2008-October/msg00299.html vendor-advisoryx_refsource_FEDORA
Change history (0)
No recorded changes yet.