CVE-2014-6438 : The URI.decode_www_form_component method in Ruby before 1.9.2-p330 allows remote

The URI.decode_www_form_component method in Ruby before 1.9.2-p330 allows remote attackers to cause a denial of service (catastrophic regular expression backtracking, resource consumption, or application crash) via a crafted string.

Published 2017-09-06 21:29:00

Updated 2017-09-11 18:25:35

Source MITRE

View at NVD, CVE.org

Vulnerability category: Denial of service

Products affected by CVE-2014-6438

Ruby-lang » Ruby
Versions up to, including, (<=) 1.9.2
cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
Matching versions

Threat overview for CVE-2014-6438

Top countries where our scanners detected CVE-2014-6438

Top open port discovered on systems with this issue 80

IPs affected by CVE-2014-6438 516

Threat actors abusing to this issue? Yes

Find out if you^* are affected by CVE-2014-6438!

^*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2014-6438

EPSS FAQ

0.58%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 66 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2014-6438

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:N/A:P	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
7.5	HIGH	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2014-6438

CWE-399

Assigned by: nvd@nist.gov (Primary)

References for CVE-2014-6438

https://www.ruby-lang.org/en/news/2014/08/19/ruby-1-9-2-p330-released/

Ruby 1.9.2-p330 Released
Release Notes;Patch;Vendor Advisory
http://www.openwall.com/lists/oss-security/2015/07/13/6

oss-security - Re: Retroactive CVE request for Ruby 1.9.2-p330
Mailing List;VDB Entry
https://github.com/ruby/www.ruby-lang.org/issues/817

Mention the CVE id in "Ruby 1.9.2-p330 Released" · Issue #817 · ruby/www.ruby-lang.org · GitHub
Third Party Advisory
http://www.securitytracker.com/id/1032874

Ruby Parsing Error in 'URI.decode_www_form_component' Lets Remote Users Deny Service - SecurityTracker
Third Party Advisory;VDB Entry