expat 2.1.0 and previous versions does not properly handle entities expansion unless an application developer uses the XML_SetEntityDeclHandler function, which allows remote malicious users 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.
Vulnerable Product | Search on Vulmon | Subscribe to Product |
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libexpat project libexpat |
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python python |
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apple ipados |
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apple iphone os |
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apple macos |
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apple watchos |
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apple tvos |