Algorithmic complexity vulnerability in the WEBrick::HTTPUtils.split_header_value function in WEBrick::HTTP::DefaultFileHandler in WEBrick in Ruby 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 allows context-dependent attackers to cause a denial of service (CPU consumption) via a crafted HTTP request that is processed by a backtracking regular expression.
Published 2008-08-13 01:41:00
Updated 2018-10-11 20:48:59
Source MITRE
View at NVD,   CVE.org
Vulnerability category: Denial of service

Threat overview for CVE-2008-3656

Top countries where our scanners detected CVE-2008-3656
Top open port discovered on systems with this issue 443
IPs affected by CVE-2008-3656 1,791
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2008-3656!
*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-2008-3656

10.27%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 95 %
Percentile, the proportion of vulnerabilities that are scored at or less

Metasploit modules for CVE-2008-3656

  • Ruby WEBrick::HTTP::DefaultFileHandler DoS
    Disclosure Date: 2008-08-08
    First seen: 2020-04-26
    auxiliary/dos/http/webrick_regex
    The WEBrick::HTTP::DefaultFileHandler in WEBrick in Ruby 1.8.5 and earlier, 1.8.6 to 1.8.6-p286, 1.8.7 to 1.8.7-p71, and 1.9 to r18423 allows for a DoS (CPU consumption) via a crafted HTTP request. Authors: - kris katterjohn <katterjohn@gmail.com>

CVSS scores for CVE-2008-3656

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
7.8
HIGH AV:N/AC:L/Au:N/C:N/I:N/A:C
10.0
6.9
NIST

CWE ids for CVE-2008-3656

  • Assigned by: nvd@nist.gov (Primary)

References for CVE-2008-3656

Products affected by CVE-2008-3656

This web site uses cookies for managing your session, storing preferences, website analytics and additional purposes described in our privacy policy.
By using this web site you are agreeing to CVEdetails.com terms of use!