Directory traversal vulnerability in WEBrick 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 before 1.8.7-p22, and 1.9.0 before 1.9.0-2, when using NTFS or FAT filesystems, allows remote attackers to read arbitrary CGI files via a trailing (1) + (plus), (2) %2b (encoded plus), (3) . (dot), (4) %2e (encoded dot), or (5) %20 (encoded space) character in the URI, possibly related to the WEBrick::HTTPServlet::FileHandler and WEBrick::HTTPServer.new functionality and the :DocumentRoot option.
Published 2008-04-18 22:05:00
Updated 2017-08-08 01:30:34
Source MITRE
View at NVD,   CVE.org
Vulnerability category: Directory traversal

Threat overview for CVE-2008-1891

Top countries where our scanners detected CVE-2008-1891
Top open port discovered on systems with this issue 80
IPs affected by CVE-2008-1891 119
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2008-1891!
*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-2008-1891

0.52%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 76 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2008-1891

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.0
MEDIUM AV:N/AC:L/Au:N/C:P/I:N/A:N
10.0
2.9
NIST

CWE ids for CVE-2008-1891

  • The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
    Assigned by: nvd@nist.gov (Primary)

Vendor statements for CVE-2008-1891

  • Red Hat 2009-06-10
    Red Hat is aware of this issue and is tracking it via the following bug: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=CVE-2008-1891 The risks associated with fixing this flaw outweigh the benefits of the fix. Red Hat does not plan to fix this flaw in Red Hat Enterprise Linux.

Products affected by CVE-2008-1891

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