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epee: tighten the URL parsing regexp a little

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fixes massive amounts of time spent on pathological inputs

Found by OSS-Fuzz
This commit is contained in:
moneromooo-monero 2020-11-09 12:40:17 +00:00
parent 8b3b106ad1
commit c5f6629f4a
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GPG Key ID: 686F07454D6CEFC3
1 changed files with 4 additions and 4 deletions
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8
contrib/epee/include/net/net_parse_helpers.h
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@ -131,8 +131,8 @@ namespace net_utils
inline
bool parse_url_ipv6(const std::string url_str, http::url_content& content)
{
STATIC_REGEXP_EXPR_1(rexp_match_uri, "^((.*?)://)?(\\[(.*)\\](:(\\d+))?)(.*)?", boost::regex::icase | boost::regex::normal);
// 12 3 4 5 6 7
STATIC_REGEXP_EXPR_1(rexp_match_uri, "^(([^:]*?)://)?(\\[(.*)\\](:(\\d+))?)(.*)?", boost::regex::icase | boost::regex::normal);
// 12 3 4 5 6 7
content.port = 0;
boost::smatch result;
@ -175,8 +175,8 @@ namespace net_utils
///iframe_test.html?api_url=http://api.vk.com/api.php&api_id=3289090&api_settings=1&viewer_id=562964060&viewer_type=0&sid=0aad8d1c5713130f9ca0076f2b7b47e532877424961367d81e7fa92455f069be7e21bc3193cbd0be11895&secret=368ebbc0ef&access_token=668bc03f43981d883f73876ffff4aa8564254b359cc745dfa1b3cde7bdab2e94105d8f6d8250717569c0a7&user_id=0&group_id=0&is_app_user=1&auth_key=d2f7a895ca5ff3fdb2a2a8ae23fe679a&language=0&parent_language=0&ad_info=ElsdCQBaQlxiAQRdFUVUXiN2AVBzBx5pU1BXIgZUJlIEAWcgAUoLQg==&referrer=unknown&lc_name=9834b6a3&hash=
//STATIC_REGEXP_EXPR_1(rexp_match_uri, "^([^?#]*)(\\?([^#]*))?(#(.*))?", boost::regex::icase | boost::regex::normal);
STATIC_REGEXP_EXPR_1(rexp_match_uri, "^((.*?)://)?(([^/:]*)(:(\\d+))?)(.*)?", boost::regex::icase | boost::regex::normal);
// 12 34 5 6 7
STATIC_REGEXP_EXPR_1(rexp_match_uri, "^(([^:]*?)://)?(([^/:]*)(:(\\d+))?)(.*)?", boost::regex::icase | boost::regex::normal);
// 12 34 5 6 7
content.port = 0;
boost::smatch result;
if(!(boost::regex_search(url_str, result, rexp_match_uri, boost::match_default) && result[0].matched))