← Vulnerability feed

Vulnerability record · CVE-2009-1904 · published 11 June 2009

CVE-2009-1904: Ruby-lang ruby vulnerability

Ruby Lang · Ruby

The BigDecimal library in Ruby 1.8.6 before p369 and 1.8.7 before p173 allows context-dependent attackers to cause a denial of service (application crash) via a string argument that represents a large number, as demonstrated by an attempted conversion to the Float data type.

5.0 CVSS 2.0 Medium EPSS 13% · top 3.9% CWE-189 · CWE-189
5.0CVSS 2.0 base score
13%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
62References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

The BigDecimal library in Ruby 1.8.6 before p369 and 1.8.7 before p173 allows context-dependent attackers to cause a denial of service (application crash) via a string argument that represents a large number, as demonstrated by an attempted conversion to the Float data type.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=532689 Patch
http://bugs.gentoo.org/show_bug.cgi?id=273213
http://github.com/NZKoz/bigdecimal-segfault-fix/tree/master Patch
http://groups.google.com/group/rubyonrails-security/msg/fad60751e2b9b4f6?dmode=source
http://lists.apple.com/archives/security-announce/2010//Mar/msg00001.html
http://mail-index.netbsd.org/pkgsrc-changes/2009/06/10/msg024708.html
http://osvdb.org/55031
http://redmine.ruby-lang.org/issues/show/794 ExploitPatch
http://secunia.com/advisories/35399 Vendor Advisory
http://secunia.com/advisories/35527
http://secunia.com/advisories/35593
http://secunia.com/advisories/35699
http://secunia.com/advisories/35937
http://secunia.com/advisories/37705
http://security.gentoo.org/glsa/glsa-200906-02.xml
http://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.430805
http://support.apple.com/kb/HT4077
http://weblog.rubyonrails.org/2009/6/10/dos-vulnerability-in-ruby/ Patch
http://www.mandriva.com/security/advisories?name=MDVSA-2009:160
http://www.redhat.com/support/errata/RHSA-2009-1140.html
http://www.ruby-forum.com/topic/189071
http://www.ruby-lang.org/en/news/2009/06/09/dos-vulnerability-in-bigdecimal/ PatchVendor Advisory
http://www.securityfocus.com/bid/35278
http://www.securitytracker.com/id?1022371
http://www.ubuntu.com/usn/USN-805-1
http://www.vupen.com/english/advisories/2009/1563
https://bugs.launchpad.net/bugs/385436
https://bugs.launchpad.net/bugs/cve/2009-1904
https://exchange.xforce.ibmcloud.com/vulnerabilities/51032
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9780
https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00731.html
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=532689 Patch
http://bugs.gentoo.org/show_bug.cgi?id=273213
http://github.com/NZKoz/bigdecimal-segfault-fix/tree/master Patch
http://groups.google.com/group/rubyonrails-security/msg/fad60751e2b9b4f6?dmode=source
http://lists.apple.com/archives/security-announce/2010//Mar/msg00001.html
http://mail-index.netbsd.org/pkgsrc-changes/2009/06/10/msg024708.html
http://osvdb.org/55031
http://redmine.ruby-lang.org/issues/show/794 ExploitPatch
http://secunia.com/advisories/35399 Vendor Advisory

Track CVE-2009-1904 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2009-4124Ruby-lang ruby memory buffer overflow vulnerabilityHeap-based buffer overflow in the rb_str_justify function in string.c in Ruby 1.9.1 before 1.9.1-p376 allows context-dependent attackers to execute a…EPSS 3.9%10.0CVE-2008-2662Ruby-lang ruby vulnerabilityMultiple integer overflows in the rb_str_buf_append function in Ruby 1.8.4 and earlier, 1.8.5 before 1.8.5-p231, 1.8.6 before 1.8.6-p230, 1.8.7 befor…EPSS 4.3%10.0CVE-2008-2663Ruby-lang ruby integer overflow vulnerabilityMultiple integer overflows in the rb_ary_store function in Ruby 1.8.4 and earlier, 1.8.5 before 1.8.5-p231, 1.8.6 before 1.8.6-p230, and 1.8.7 before…EPSS 4.5%9.8CVE-2016-2338Ruby-lang ruby out-of-bounds write vulnerabilityAn exploitable heap overflow vulnerability exists in the Psych::Emitter start_document function of Ruby. In Psych::Emitter start_document function he…EPSS 4.7%9.8CVE-2022-28738Ruby-lang ruby double free vulnerabilityA double free was found in the Regexp compiler in Ruby 3.x before 3.0.4 and 3.1.x before 3.1.2. If a victim attempts to create a Regexp from untruste…EPSS 2.9%9.8CVE-2011-4121Ruby-lang ruby inadequate encryption strength vulnerabilityThe OpenSSL extension of Ruby (Git trunk) versions after 2011-09-01 up to 2011-11-03 always generated an exponent value of '1' to be used for private…EPSS 2.5%9.8CVE-2018-16395Ruby-lang openssl vulnerabilityAn issue was discovered in the OpenSSL library in Ruby before 2.3.8, 2.4.x before 2.4.5, 2.5.x before 2.5.2, and 2.6.x before 2.6.0-preview3. When tw…EPSS 11%9.8CVE-2017-17790Ruby-lang ruby injection vulnerabilityThe lazy_initialize function in lib/resolv.rb in Ruby through 2.4.3 uses Kernel#open, which might allow Command Injection attacks, as demonstrated by…EPSS 5.9%

Source: NIST National Vulnerability Database (record CVE-2009-1904), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.