Executive Summary

Summary
Title Xerces-C++: Denial of Service
Informations
Name GLSA-200903-19 First vendor Publication 2009-03-09
Vendor Gentoo Last vendor Modification 2009-03-09
Severity (Vendor) Normal Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:C)
Cvss Base Score 7.8 Attack Range Network
Cvss Impact Score 6.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

An error in Xerces-C++ allows for a Denial of Service via malicious XML schema files.

Background

Xerces-C++ is a validating XML parser written in a portable subset of C++.

Description

Frank Rast reported that the XML parser in Xerces-C++ does not correctly handle an XML schema definition with a large maxOccurs value, which triggers excessive memory consumption during the validation of an XML file.

Impact

A remote attacker could entice a user or automated system to validate an XML file using a specially crafted XML schema file, leading to a Denial of Service (stack consumption and crash).

Workaround

There is no known workaround at this time.

Resolution

All Xerces-C++ users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/xerces-c-3.0.0-r1"

References

[ 1 ] CVE-2008-4482 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4482

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200903-19.xml

Original Source

Url : http://security.gentoo.org/glsa/glsa-200903-19.xml

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-20 Improper Input Validation

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 17

OpenVAS Exploits

Date Description
2009-03-13 Name : Gentoo Security Advisory GLSA 200903-19 (xerces-c)
File : nvt/glsa_200903_19.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
48788 Apache Xerces-C++ XML Schema maxOccurs Value XML File Handling DoS

Nessus® Vulnerability Scanner

Date Description
2009-03-10 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-200903-19.nasl - Type : ACT_GATHER_INFO

Alert History

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0
Date Informations
2014-02-17 11:36:21
  • Multiple Updates