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[Security] (low risk) New coins: restrict charset of ticker and name #343

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[Security] (low risk) New coins: restrict charset of ticker and name #343

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62ca5b0
Update rawcoins.php
phm87 Oct 27, 2018
f52b250
updateRawCoin : restrict charset of new coins
phm87 Oct 28, 2018
6395fe4
Update rawcoins.php
phm87 Oct 29, 2018
f73a438
Fix of condition (to test) & allow space in coin name
phm87 Feb 25, 2019
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10 changes: 10 additions & 0 deletions web/yaamp/core/backend/rawcoins.php
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Original file line number Diff line number Diff line change
Expand Up @@ -455,6 +455,16 @@ function updateRawCoin($marketname, $symbol, $name='unknown')
{
if($symbol == 'BTC') return;

// Restrict $symbol and $name to strict defined set of characters (to protect from rogue exchange or DNS attack on exchange)
if (preg_match('/[^A-Za-z0-9_\$]/', $symbol)) {
debuglog("weird symbol $symbol from $marketname");
return;
}
if (preg_match('/[^A-Za-z0-9_\$ ]/', $name)) {
debuglog("weird name $name for symbol $symbol from $marketname");
return;
}

$coin = getdbosql('db_coins', "symbol=:symbol", array(':symbol'=>$symbol));
if(!$coin && YAAMP_CREATE_NEW_COINS)
{
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