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    CVE-2008-1891

    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:Apr 15, 2008
    Last Modified:Apr 23, 2026
    EPS:Apr 18, 2008
    EPSS Score:0.00291
    CVSS Score:5

    Affected Products

    Vendor
    Ruby-lang
    Product
    Ruby

    Exploits

    No exploit reference

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    References

    http://aluigi.altervista.org/adv/webrickcgi-adv.txt
    http://lists.opensuse.org/opensuse-security-announce/2008-08/msg00006.html
    http://secunia.com/advisories/29794
    http://secunia.com/advisories/30831
    http://secunia.com/advisories/31687
    http://www.mandriva.com/security/advisories?name=MDVSA-2008:140
    http://www.mandriva.com/security/advisories?name=MDVSA-2008:141
    http://www.ruby-lang.org/en/news/2008/06/20/arbitrary-code-execution-vulnerabilities/
    http://www.vupen.com/english/advisories/2008/1245/references
    https://exchange.xforce.ibmcloud.com/vulnerabilities/41824
    https://www.redhat.com/archives/fedora-package-announce/2008-June/msg00937.html
    http://aluigi.altervista.org/adv/webrickcgi-adv.txt
    http://lists.opensuse.org/opensuse-security-announce/2008-08/msg00006.html
    http://secunia.com/advisories/29794
    http://secunia.com/advisories/30831
    http://secunia.com/advisories/31687
    http://www.mandriva.com/security/advisories?name=MDVSA-2008:140
    http://www.mandriva.com/security/advisories?name=MDVSA-2008:141
    http://www.ruby-lang.org/en/news/2008/06/20/arbitrary-code-execution-vulnerabilities/
    http://www.vupen.com/english/advisories/2008/1245/references
    https://exchange.xforce.ibmcloud.com/vulnerabilities/41824
    https://www.redhat.com/archives/fedora-package-announce/2008-June/msg00937.html

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High