This update for php53 fixes the following issues: This security issue was fixed: - CVE-2017-7272: PHP enabled potential SSRF in applications that accept an fsockopen hostname argument with an expectation that the port number is constrained. Because a :port syntax was recognized, fsockopen used the port number that is specified in the hostname argument, instead of the port number in the second argument of the function - CVE-2016-6294: The locale_accept_from_http function in ext/intl/locale/locale_methods.c did not properly restrict calls to the ICU uloc_acceptLanguageFromHTTP function, which allowed remote attackers to cause a denial of service or possibly have unspecified other impact via a call with a long argument . - CVE-2017-9227: An issue was discovered in Oniguruma 6.2.0, as used in mbstring in PHP. A stack out-of-bounds read occurs in mbc_enc_len during regular expression searching. Invalid handling of reg-dmin in forward_search_range could result in an invalid pointer dereference, as an out-of-bounds read from a stack buffer. - CVE-2017-9226: An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in mbstring in PHP. A heap out-of-bounds write or read occurs in next_state_val during regular expression compilation. Octal numbers larger than 0xff are not handled correctly in fetch_token and fetch_token_in_cc. A malformed regular expression containing an octal number in the form of "\700" would produce an invalid code point value larger than 0xff in next_state_val, resulting in an out-of-bounds write memory corruption. - CVE-2017-9224: An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in mbstring in PHP. A stack out-of-bounds read occurs in match_at during regular expression searching. A logical error involving order of validation and access in match_at could result in an out-of-bounds read from a stack buffer