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Incorrect Regular Expression

CVE-2018-20164

Medium
5.3/10

Summary

An issue was discovered in regex.yaml (aka regexes.yaml) in UA-Parser UAP-Core before 0.6.0. A Regular Expression Denial of Service (ReDoS) issue allows remote attackers to overload a server by setting the User-Agent header in an HTTP(S) request to a value containing a long digit string. (The UAP-Core project contains the vulnerability, propagating to all implementations.)

  • LOW
  • NETWORK
  • NONE
  • UNCHANGED
  • NONE
  • NONE
  • NONE
  • LOW

CWE-185 - Incorrect Regular Expression

The software specifies a regular expression in a way that causes data to be improperly matched or compared.

Advisory Timeline

  • Published