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CVE-2008-3655

34
FAUCET Score

CVE-2008-3655 describes a critical access restriction bypass vulnerability in multiple versions of Ruby, including 1.8.5 and earlier, 1.8.6 through 1.8.6-p286, 1.8.7 through 1.8.7-p71, and 1.9 through r18423. This flaw allows attackers to bypass intended security controls by manipulating specific variables and methods at various safe levels. With a CVSS score of 7.5 (High), this vulnerability is easily exploitable over the network with low attack complexity, potentially leading to full compromise of confidentiality, integrity, and availability. While not currently listed on the KEV catalog or Hot List, exploit code for similar issues exists on ExploitDB, and its high FAUCET Risk Score of 97/100 indicates significant potential impact despite minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.8.5CPE matchmatch criteria
cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
1.6.8CPE matchmatch criteria
cpe:2.3:a:ruby-lang:ruby:1.6.8:*:*:*:*:*:*:*
1.8.0CPE matchmatch criteria
cpe:2.3:a:ruby-lang:ruby:1.8.0:*:*:*:*:*:*:*
1.8.1CPE matchmatch criteria
cpe:2.3:a:ruby-lang:ruby:1.8.1:*:*:*:*:*:*:*
1.8.1CPE matchmatch criteria
cpe:2.3:a:ruby-lang:ruby:1.8.1:-9:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
14.09%
Probability of exploitation in next 30 days
EPSS Percentile
96.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-32223 · Aug 11, 2008
This CVE's current EPSS score of 0.1409 is in the 94th percentile among its peer group of 51,551 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, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

debianpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 2.1Fixed in: ruby-0:1.6.4-7.el2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 3Fixed in: ruby-0:1.6.8-13.el3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: ruby-0:1.8.1-7.el4_7.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: ruby-0:1.8.5-5.el5_2.5
View patch

Vendor Advisories (1)

redhatCVE-2008-3655Moderate

ruby: multiple insufficient safe mode restrictions

Aug 8, 2008

References

bugs.debian.org / cgi-bin/bugreport.cgi
lists.apple.com / archives/security-announce/2009/May/msg00002.html
secunia.com / advisories/31430
Vendor Advisory
secunia.com / advisories/31697
Vendor Advisory
secunia.com / advisories/32165
Vendor Advisory
secunia.com / advisories/32219
Vendor Advisory
secunia.com / advisories/32255
Vendor Advisory
secunia.com / advisories/32256
Vendor Advisory
secunia.com / advisories/32371
Vendor Advisory
secunia.com / advisories/32372
Vendor Advisory
secunia.com / advisories/33178
Vendor Advisory
secunia.com / advisories/35074
Vendor Advisory
security.gentoo.org / glsa/glsa-200812-17.xml
exchange.xforce.ibmcloud.com / vulnerabilities/44369
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11602
support.apple.com / kb/HT3549
support.avaya.com / elmodocs2/security/ASA-2008-424.htm
usn.ubuntu.com / 651-1
redhat.com / archives/fedora-package-announce/2008-October/msg00259.html
redhat.com / archives/fedora-package-announce/2008-October/msg00299.html
wiki.rpath.com / wiki/Advisories:rPSA-2008-0264
debian.org / security/2008/dsa-1651
Patch
debian.org / security/2008/dsa-1652
redhat.com / support/errata/RHSA-2008-0895.html
redhat.com / support/errata/RHSA-2008-0897.html
ruby-lang.org / en/news/2008/08/08/multiple-vulnerabilities-in-ruby
Exploit
securityfocus.com / archive/1/495884/100/0/threaded
securityfocus.com / bid/30644
ExploitPatch
securitytracker.com / id
us-cert.gov / cas/techalerts/TA09-133A.html
US Government Resource
vupen.com / english/advisories/2008/2334
Vendor Advisory
vupen.com / english/advisories/2009/1297
PatchVendor Advisory