National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2013-0340 Detail

Current Description

expat 2.1.0 and earlier does not properly handle entities expansion unless an application developer uses the XML_SetEntityDeclHandler function, which allows remote attackers to cause a denial of service (resource consumption), send HTTP requests to intranet servers, or read arbitrary files via a crafted XML document, aka an XML External Entity (XXE) issue. NOTE: it could be argued that because expat already provides the ability to disable external entity expansion, the responsibility for resolving this issue lies with application developers; according to this argument, this entry should be REJECTed, and each affected application would need its own CVE.

Source:  MITRE
View Analysis Description

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 6.8 MEDIUM
Vector: (AV:N/AC:M/Au:N/C:P/I:P/A:P) (V2 legend)
Impact Subscore: 6.4
Exploitability Subscore: 8.6


Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): Partial
Availability (A): Partial
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://openwall.com/lists/oss-security/2013/02/22/3
http://securitytracker.com/id?1028213
http://www.openwall.com/lists/oss-security/2013/04/12/6
http://www.securityfocus.com/bid/58233
https://security.gentoo.org/glsa/201701-21

Technical Details

Vulnerability Type (View All)

  • Permissions, Privileges, and Access Controls (CWE-264)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:libexpat:expat:1.95.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:libexpat:expat:1.95.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:libexpat:expat:1.95.4:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:libexpat:expat:1.95.5:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:libexpat:expat:1.95.6:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:libexpat:expat:1.95.7:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:libexpat:expat:1.95.8:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:libexpat:expat:2.0.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:libexpat:expat:2.0.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:libexpat:expat:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
2.1.0


Change History

2 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2013-0340
NVD Published Date:
01/21/2014
NVD Last Modified:
06/30/2017