Improper Canonicalization of DNS Hostnames in Google Chrome

CVE-2015-1269 · MEDIUM Severity

AV:N/AC:M/AU:N/C:N/I:P/A:N

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.

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