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CVE-2006-6303

16
FAUCET Score

CVE-2006-6303 describes a denial-of-service vulnerability in the cgi.rb component of Ruby versions prior to 1.8.5-p2, specifically affecting the read_multipart function. This flaw allows remote attackers to trigger an infinite loop by sending specially crafted HTTP requests that exploit improper boundary detection in MIME multipart content. With a CVSS score of 5.0, this vulnerability is of medium severity, requiring no authentication and having low attack complexity, but only leading to partial availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage regarding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.8CPE matchmatch criteria
cpe:2.3:a:yukihiro_matsumoto:ruby:1.8:*:*:*:*:*:*:*
1.8.1CPE matchmatch criteria
cpe:2.3:a:yukihiro_matsumoto:ruby:1.8.1:*:*:*:*:*:*:*
1.8.2CPE matchmatch criteria
cpe:2.3:a:yukihiro_matsumoto:ruby:1.8.2:*:*:*:*:*:*:*
1.8.2_pre1CPE matchmatch criteria
cpe:2.3:a:yukihiro_matsumoto:ruby:1.8.2_pre1:*:*:*:*:*:*:*
1.8.2_pre2CPE matchmatch criteria
cpe:2.3:a:yukihiro_matsumoto:ruby:1.8.2_pre2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.70%
Probability of exploitation in next 30 days
EPSS Percentile
88.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0370 is in the 85th percentile among its peer group of 23,725 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (4)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 2.1Fixed in: ruby-0:1.6.4-6.el2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 3Fixed in: ruby-0:1.6.8-12.el3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: ruby-0:1.8.1-7.EL4.8.1
View patch
redhatpatch availablevia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2006-6303Low

ruby's cgi.rb vulnerable infinite loop DoS

Dec 4, 2006

References

bugs.gentoo.org / show_bug.cgi
Patch
bugzilla.redhat.com / bugzilla/show_bug.cgi
Patch
docs.info.apple.com / article.html
jvn.jp / jp/JVN%2384798830/index.html
lists.apple.com / archives/security-announce/2007/May/msg00004.html
secunia.com / advisories/23165
secunia.com / advisories/23268
secunia.com / advisories/23454
secunia.com / advisories/25402
secunia.com / advisories/27576
secunia.com / advisories/31090
security.gentoo.org / glsa/glsa-200612-21.xml
securitytracker.com / id
exchange.xforce.ibmcloud.com / vulnerabilities/30734
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10529
mandriva.com / security/advisories
novell.com / linux/security/advisories/2007_4_sr.html
redhat.com / support/errata/RHSA-2007-0961.html
ruby-lang.org / cgi-bin/cvsweb.cgi/ruby/lib/cgi.rb.diff
Patch
ruby-lang.org / en/news/2006/12/04/another-dos-vulnerability-in-cgi-library
Patch
securityfocus.com / bid/21441
ubuntu.com / usn/usn-394-1
vupen.com / english/advisories/2006/4855
vupen.com / english/advisories/2007/1939