CVE-2008-3905

Exp

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.

Published: 2008-09-04 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2008-3905 is rated High Exploit Risk (66.1/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.44%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2008-3905

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2008-3905

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 3.23% 2.44% -0.79%
2 2025-12-28 4.38% 3.23% -1.15%
3 2025-12-27 — 4.38% —

Full EPSS history (16 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2008-3905

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 4.9 [email protected]

Weakness enumeration for CVE-2008-3905

OS Trackers for CVE-2008-3905

vendor priority summary link
gentoo normal CVE-2008-3905: 1 GLSA(s) (200812-17), 1 atom(s) (dev-lang/ruby); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2008-3905
redhat medium — https://access.redhat.com/security/cve/CVE-2008-3905
ubuntu medium CVE-2008-3905 medium priority: Ubuntu including 2 source packages (ruby1.8, ruby1.9), 24 status rows across 12 suites (dapper, feisty, gutsy, hardy, intrepid, jaunty, karmic, lucid, maverick, natty, oneiric, upstream): released 10, not-affected 7, ignored 4, DNE 3. https://ubuntu.com/security/CVE-2008-3905

Affected software / configurations for CVE-2008-3905

Vendor Product Version Raw CPE
ruby-lang ruby <= 1.8.5 cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
ruby-lang ruby <= 1.8.6 cpe:2.3:a:ruby-lang:ruby:*:p286:*:*:*:*:*:*
ruby-lang ruby <= 1.8.7 cpe:2.3:a:ruby-lang:ruby:*:p71:*:*:*:*:*:*
ruby-lang ruby <= 1.9 cpe:2.3:a:ruby-lang:ruby:*:r18423:*:*:*:*:*:*
ruby-lang ruby 1.6 cpe:2.3:a:ruby-lang:ruby:1.6:*:*:*:*:*:*:*
ruby-lang ruby 1.6.8 cpe:2.3:a:ruby-lang:ruby:1.6.8:*:*:*:*:*:*:*
ruby-lang ruby 1.8.0 cpe:2.3:a:ruby-lang:ruby:1.8.0:*:*:*:*:*:*:*
ruby-lang ruby 1.8.1 cpe:2.3:a:ruby-lang:ruby:1.8.1:*:*:*:*:*:*:*
ruby-lang ruby 1.8.2 cpe:2.3:a:ruby-lang:ruby:1.8.2:*:*:*:*:*:*:*
ruby-lang ruby 1.8.3 cpe:2.3:a:ruby-lang:ruby:1.8.3:*:*:*:*:*:*:*
ruby-lang ruby 1.8.4 cpe:2.3:a:ruby-lang:ruby:1.8.4:*:*:*:*:*:*:*
ruby-lang ruby 1.8.6 cpe:2.3:a:ruby-lang:ruby:1.8.6:*:*:*:*:*:*:*
ruby-lang ruby 1.8.6 cpe:2.3:a:ruby-lang:ruby:1.8.6:p110:*:*:*:*:*:*
ruby-lang ruby 1.8.6 cpe:2.3:a:ruby-lang:ruby:1.8.6:p111:*:*:*:*:*:*
ruby-lang ruby 1.8.6 cpe:2.3:a:ruby-lang:ruby:1.8.6:p114:*:*:*:*:*:*
ruby-lang ruby 1.8.6 cpe:2.3:a:ruby-lang:ruby:1.8.6:p230:*:*:*:*:*:*
ruby-lang ruby 1.8.6 cpe:2.3:a:ruby-lang:ruby:1.8.6:p36:*:*:*:*:*:*
ruby-lang ruby 1.8.6 cpe:2.3:a:ruby-lang:ruby:1.8.6:preview1:*:*:*:*:*:*
ruby-lang ruby 1.8.6 cpe:2.3:a:ruby-lang:ruby:1.8.6:preview2:*:*:*:*:*:*
ruby-lang ruby 1.8.6 cpe:2.3:a:ruby-lang:ruby:1.8.6:preview3:*:*:*:*:*:*
ruby-lang ruby 1.8.7 cpe:2.3:a:ruby-lang:ruby:1.8.7:*:*:*:*:*:*:*
ruby-lang ruby 1.8.7 cpe:2.3:a:ruby-lang:ruby:1.8.7:p17:*:*:*:*:*:*
ruby-lang ruby 1.8.7 cpe:2.3:a:ruby-lang:ruby:1.8.7:p22:*:*:*:*:*:*
ruby-lang ruby 1.8.7 cpe:2.3:a:ruby-lang:ruby:1.8.7:preview1:*:*:*:*:*:*
ruby-lang ruby 1.8.7 cpe:2.3:a:ruby-lang:ruby:1.8.7:preview2:*:*:*:*:*:*
ruby-lang ruby 1.8.7 cpe:2.3:a:ruby-lang:ruby:1.8.7:preview3:*:*:*:*:*:*
ruby-lang ruby 1.8.7 cpe:2.3:a:ruby-lang:ruby:1.8.7:preview4:*:*:*:*:*:*

References for CVE-2008-3905

URL Tags
http://secunia.com/advisories/31430
http://secunia.com/advisories/32165
http://secunia.com/advisories/32219
http://secunia.com/advisories/32255
http://secunia.com/advisories/32256
http://secunia.com/advisories/32371
http://secunia.com/advisories/32948
http://secunia.com/advisories/33178
http://security.gentoo.org/glsa/glsa-200812-17.xml
http://slackware.com/security/viewer.php?l=slackware-security&y=2008&m=slackware-security.371754
http://support.avaya.com/elmodocs2/security/ASA-2008-424.htm
http://www.debian.org/security/2008/dsa-1651
http://www.debian.org/security/2008/dsa-1652
http://www.openwall.com/lists/oss-security/2008/09/03/3 Exploit
http://www.openwall.com/lists/oss-security/2008/09/04/9
http://www.redhat.com/support/errata/RHSA-2008-0897.html
http://www.ruby-lang.org/en/news/2008/08/08/multiple-vulnerabilities-in-ruby/ Patch
http://www.securityfocus.com/bid/31699
http://www.vupen.com/english/advisories/2008/2334
https://exchange.xforce.ibmcloud.com/vulnerabilities/45935
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10034
https://usn.ubuntu.com/651-1/
https://www.redhat.com/archives/fedora-package-announce/2008-October/msg00259.html
https://www.redhat.com/archives/fedora-package-announce/2008-October/msg00299.html
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