CVE-2017-9226— Oniguruma 缓冲区错误漏洞

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An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. 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.

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Oniguruma 缓冲区错误漏洞

Oniguruma是一款开源的正则表达式库。 Oniguruma 6.2.0版本存在安全漏洞。在 Ruby 中的 Oniguruma-mod 到 2.4.1 和 PHP 中的 mbstring 到 7.1.5 中使用。 在正则表达式编译期间，在 next_state_val() 中发生堆越界写入或读取。 大于 0xff 的八进制数在 fetch_token() 和 fetch_token_in_cc() 中无法正确处理。 包含 '700' 形式的八进制数的格式错误的正则表达式将在 next_state_v

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