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Improper Input Validation

CVE-2013-6422

Low
0/10

Summary

The GnuTLS backend in libcurl 7.21.4 through 7.33.0, when disabling digital signature verification (CURLOPT_SSL_VERIFYPEER), also disables the "CURLOPT_SSL_VERIFYHOST" check for CN or SAN host name fields, which makes it easier for remote attackers to spoof servers and conduct man-in-the-middle (MITM) attacks.

  • HIGH
  • NETWORK
  • NONE
  • PARTIAL
  • PARTIAL
  • NONE

CWE-20 - Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

References

Advisory Timeline

  • Published