fixed critical XSS bug that can deanonymize user

This commit is contained in:
Micah Lee 2014-07-15 19:13:44 -07:00
parent 2edde2eb1f
commit d9aa55b991
2 changed files with 50 additions and 1 deletions

View file

@ -9,3 +9,52 @@ function human_readable_filesize(bytes, si) {
} while(bytes >= thresh);
return bytes.toFixed(1)+' '+units[u];
};
function htmlspecialchars(string, quote_style, charset, double_encode) {
var optTemp = 0,
i = 0,
noquotes = false;
if (typeof quote_style === 'undefined' || quote_style === null) {
quote_style = 2;
}
string = string.toString();
if (double_encode !== false) {
// Put this first to avoid double-encoding
string = string.replace(/&/g, '&');
}
string = string.replace(/</g, '&lt;')
.replace(/>/g, '&gt;');
var OPTS = {
'ENT_NOQUOTES': 0,
'ENT_HTML_QUOTE_SINGLE': 1,
'ENT_HTML_QUOTE_DOUBLE': 2,
'ENT_COMPAT': 2,
'ENT_QUOTES': 3,
'ENT_IGNORE': 4
};
if (quote_style === 0) {
noquotes = true;
}
if (typeof quote_style !== 'number') {
// Allow for a single string or an array of string flags
quote_style = [].concat(quote_style);
for (i = 0; i < quote_style.length; i++) {
// Resolve string input to bitwise e.g. 'ENT_IGNORE' becomes 4
if (OPTS[quote_style[i]] === 0) {
noquotes = true;
} else if (OPTS[quote_style[i]]) {
optTemp = optTemp | OPTS[quote_style[i]];
}
}
quote_style = optTemp;
}
if (quote_style & OPTS.ENT_HTML_QUOTE_SINGLE) {
string = string.replace(/'/g, '&#039;');
}
if (!noquotes) {
string = string.replace(/"/g, '&quot;');
}
return string;
}

View file

@ -65,7 +65,7 @@ $(function(){
}
} else {
if(r.path != '/favicon.ico')
update($('<span>').addClass('weblog-error').html(onionshare.strings['other_page_loaded']+': '+r.path));
update($('<span>').addClass('weblog-error').html(onionshare.strings['other_page_loaded']+': '+htmlspecialchars(r.path)));
}
}
}