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    CVE-2009-0356

    Mozilla Firefox before 3.0.6 and SeaMonkey do not block links to the (1) about:plugins and (2) about:config URIs from .desktop files, which allows user-assisted remote attackers to bypass the Same Origin Policy and execute arbitrary code with chrome privileges via vectors involving the URL field in a Desktop Entry section of a .desktop file, related to representation of about: URIs as jar:file:// URIs. NOTE: this issue exists because of an incomplete fix for CVE-2008-4582.

    Published:Feb 3, 2009
    Last Modified:Apr 23, 2026
    EPS:Feb 4, 2009
    EPSS Score:0.00909
    CVSS Score:5.1

    Affected Products

    Vendor
    Mozilla
    Product
    Firefox
    Vendor
    Mozilla
    Product
    Seamonkey
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    No exploit reference

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    CVE-2026-84139 (CVSS 6.1) — Clickjacking issue in the DOM: Events component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.…
    CVE-2026-84138 (CVSS 6.5) — Denial-of-service in the PDF Viewer component. This vulnerability was fixed in Firefox 155 and Thunderbird 155…
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    References

    http://lists.opensuse.org/opensuse-security-announce/2009-02/msg00001.html
    http://rhn.redhat.com/errata/RHSA-2009-0256.html
    http://secunia.com/advisories/33799
    http://secunia.com/advisories/33809
    http://secunia.com/advisories/33831
    http://secunia.com/advisories/33841
    http://secunia.com/advisories/33846
    http://support.avaya.com/elmodocs2/security/ASA-2009-040.htm
    http://www.mandriva.com/security/advisories?name=MDVSA-2009:044
    http://www.mozilla.org/security/announce/2009/mfsa2009-04.html
    http://www.securityfocus.com/bid/33598
    http://www.securitytracker.com/id?1021666
    http://www.vupen.com/english/advisories/2009/0313
    https://bugzilla.mozilla.org/show_bug.cgi?id=460425
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9922
    https://www.redhat.com/archives/fedora-package-announce/2009-February/msg00240.html
    http://lists.opensuse.org/opensuse-security-announce/2009-02/msg00001.html
    http://rhn.redhat.com/errata/RHSA-2009-0256.html
    http://secunia.com/advisories/33799
    http://secunia.com/advisories/33809
    http://secunia.com/advisories/33831
    http://secunia.com/advisories/33841
    http://secunia.com/advisories/33846
    http://support.avaya.com/elmodocs2/security/ASA-2009-040.htm
    http://www.mandriva.com/security/advisories?name=MDVSA-2009:044
    http://www.mozilla.org/security/announce/2009/mfsa2009-04.html
    http://www.securityfocus.com/bid/33598
    http://www.securitytracker.com/id?1021666
    http://www.vupen.com/english/advisories/2009/0313
    https://bugzilla.mozilla.org/show_bug.cgi?id=460425
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9922
    https://www.redhat.com/archives/fedora-package-announce/2009-February/msg00240.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