Skip to main content

Improper Null Termination

CVE-2020-7066

Medium
5.3/10

Summary

In PHP versions 7.2.x below 7.2.29, 7.3.x below 7.3.16 and 7.4.x below 7.4.4, while using get_headers() with user-supplied URL, if the URL contains zero (\0) character, the URL will be silently truncated at it. This may cause some software to make incorrect assumptions about the target of the get_headers() and possibly send some information to a wrong server.

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

CWE-170 - Improper Null Termination

The software does not terminate or incorrectly terminates a string or array with a null character or equivalent terminator.

References

Advisory Timeline

  • Published