The DecodeHSTSPreloadRaw function in net/http/transport_security_state.cc in Google Chrome before 43.0.2357.130 does not properly canonicalize DNS hostnames before making comparisons to HSTS or HPKP preload entries, which allows remote attackers to bypass intended access restrictions via a string that (1) ends in a . (dot) character or (2) is not entirely lowercase.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1269
Reference (s):
- BID:75336
- URL: http://www.securityfocus.com/bid/75336
- http://googlechromereleases.blogspot.com/2015/06/chrome-stable-update.html
- https://code.google.com/p/chromium/issues/detail?id=461481
- https://codereview.chromium.org/1149753002