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    CVE-2009-2473

    neon before 0.28.6, when expat is used, does not properly detect recursion during entity expansion, which allows context-dependent attackers to cause a denial of service (memory and CPU consumption) via a crafted XML document containing a large number of nested entity references, a similar issue to CVE-2003-1564.

    Published:Aug 18, 2009
    Last Modified:Apr 23, 2026
    EPS:Aug 21, 2009
    EPSS Score:0.12375
    CVSS Score:4.3

    Affected Products

    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Webdav
    Product
    Neon

    Exploits

    https://www.exploit-db.com/exploits/10206

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    http://lists.apple.com/archives/security-announce/2010//Nov/msg00000.html
    http://lists.manyfish.co.uk/pipermail/neon/2009-August/001044.html
    http://lists.manyfish.co.uk/pipermail/neon/2009-August/001045.html
    http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.html
    http://rhn.redhat.com/errata/RHSA-2013-0131.html
    http://secunia.com/advisories/36371
    http://support.apple.com/kb/HT4435
    http://www.mandriva.com/security/advisories?name=MDVSA-2009:221
    http://www.vupen.com/english/advisories/2009/2341
    https://exchange.xforce.ibmcloud.com/vulnerabilities/52633
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9461
    https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00924.html
    https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00945.html
    http://lists.apple.com/archives/security-announce/2010//Nov/msg00000.html
    http://lists.manyfish.co.uk/pipermail/neon/2009-August/001044.html
    http://lists.manyfish.co.uk/pipermail/neon/2009-August/001045.html
    http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.html
    http://rhn.redhat.com/errata/RHSA-2013-0131.html
    http://secunia.com/advisories/36371
    http://support.apple.com/kb/HT4435
    http://www.mandriva.com/security/advisories?name=MDVSA-2009:221
    http://www.vupen.com/english/advisories/2009/2341
    https://exchange.xforce.ibmcloud.com/vulnerabilities/52633
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9461
    https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00924.html
    https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00945.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