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Improper Restriction of XML External Entity Reference

CVE-2018-1000836

High
9/10

Summary

The bw-calendar-engine version contains an XML External Entity (XXE) vulnerability in the "IscheduleClient" XML Parser that can result in disclosure of confidential data, denial of service, SSRF and port scanning. This attack appears to be exploitable via Man in the Middle or malicious server.

  • HIGH
  • NETWORK
  • HIGH
  • CHANGED
  • NONE
  • NONE
  • HIGH
  • HIGH

CWE-611 - Improper Restriction of XML External Entity Reference

Listed 4th in the 'OWASP Top Ten', XML External Entities (XXE) vulnerability allows attackers to provide an XML input that contains an external entity. When the XML is parsed, it can cause data extraction and manipulation, execution of commands, denial-of-service attacks, and server-side request forgery.

References

Advisory Timeline

  • Published