CWE
611
Advisory Published
Updated

CVE-2013-0340: XEE

First published: Tue Jan 21 2014(Updated: )

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.

Credit: an anonymous researcher an anonymous researcher an anonymous researcher an anonymous researcher an anonymous researcher an anonymous researcher secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
Libexpat Project Libexpat<2.4.0
Python Python>=3.6.0<3.6.15
Python Python>=3.7.0<3.7.12
Python Python>=3.8.0<3.8.12
Python Python>=3.9.0<3.9.7
Apple iPadOS<14.8
Apple iPhone OS<14.8
Apple macOS<11.6
Apple tvOS<15.0
Apple watchOS<8.0
Apple Catalina
Apple iOS<14.8
14.8
Apple iPadOS<14.8
14.8
Apple watchOS<8
8
Apple tvOS<15
15
Apple macOS Big Sur<11.6
11.6
Apple iOS<15
15
Apple iPadOS<15
15

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the vulnerability ID?

    The vulnerability ID is CVE-2013-0340.

  • What is the affected software?

    The affected software includes Apple watchOS, Apple macOS Big Sur, Apple iOS, Apple iPadOS, Apple Catalina, and Apple tvOS.

  • What is the remedy for Apple watchOS?

    The remedy for Apple watchOS is to update to version 8 or later.

  • What is the remedy for Apple macOS Big Sur?

    The remedy for Apple macOS Big Sur is to update to version 11.6 or later.

  • What is the remedy for Apple iOS and iPadOS?

    The remedy for Apple iOS and iPadOS is to update to version 15 or later.

  • What is the remedy for Apple Catalina?

    No specific remedy is mentioned for Apple Catalina.

  • What is the remedy for Apple tvOS?

    The remedy for Apple tvOS is to update to version 15 or later.

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