Vulnerability Monitor

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CVE-2013-0340


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.


Published

2014-01-21T18:55:09.117

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 6.8 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:P/A:P

  • Access Vector: NETWORK
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: PARTIAL
  • Availability Impact: PARTIAL
Exploitability Score

8.6

Impact Score

6.4

Weaknesses
  • Type: Primary
    CWE-611

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application libexpat_project libexpat < 2.4.0 Yes
Application python python < 3.6.15 Yes
Application python python < 3.7.12 Yes
Application python python < 3.8.12 Yes
Application python python < 3.9.7 Yes
Operating System apple ipados < 14.8 Yes
Operating System apple iphone_os < 14.8 Yes
Operating System apple macos < 11.6 Yes
Operating System apple tvos < 15.0 Yes
Operating System apple watchos < 8.0 Yes

References