National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2009-2473 Detail

Current Description

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.

Source:  MITRE
View Analysis Description

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 4.3 MEDIUM
Vector: (AV:N/AC:M/Au:N/C:N/I:N/A:P) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 8.6


Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Partial
Additional Information:
Victim must voluntarily interact with attack mechanism
Allows disruption of service

Vendor Statements (disclaimer)

Official Statement from Red Hat (09/22/2009)

Updated neon packages for Red Hat Enterprise Linux 4 and 5 were released via: https://rhn.redhat.com/errata/RHSA-2009-1452.html Embedded copy of the neon library is included in the versions of gnome-vfs2 packages as shipped with Red Hat Enteprise Linux 4 and Red Hat Enteprise Linux 5. The Red Hat Security Response Team has rated this issue as having low security impact on gnome-vfs2, future updates may address this flaw.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
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://support.apple.com/kb/HT4435
http://www.mandriva.com/security/advisories?name=MDVSA-2009:221
http://www.vupen.com/english/advisories/2009/2341 Patch Vendor Advisory
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

Technical Details

Vulnerability Type (View All)

  • Resource Management Errors (CWE-399)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:webdav:neon:0.28.6:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2009-2473
NVD Published Date:
08/21/2009
NVD Last Modified:
09/18/2017