XML External Entity Vulnerability in Expat XML Parser Library by Libexpat
CVE-2017-9233

7.5HIGH

Key Information:

Vendor
Libexpat Project
Status
Libexpat
Vendor
CVE Published:
25 July 2017

Summary

The Expat XML Parser Library contains an XML External Entity vulnerability that can be exploited to cause the parser to enter an infinite loop when processing a specially crafted external entity definition from an external Document Type Definition (DTD). This vulnerability highlights the importance of input validation and secure configuration practices in XML parsers to prevent potentially disruptive behaviors.

References

https://support.apple.com/HT208144
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https://libexpat.github.io/doc/cve-2017-9233/
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https://github.com/libexpat/libexpat/blob/master/expat/Ch...
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CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.