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fix(hmtl): prevent html injection of tag form

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Hivert Quentin committed 2023-11-06 14:04:53 +01:00
1 parent 65374e44fc
commit 7481ccf370
2 files changed
+13
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SoObjects/SOGo/NSString+Utilities.m
+12
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@@ -979,6 +979,18 @@ static int cssEscapingCount;
newResult = [regex stringByReplacingMatchesInString:result options:0 range:NSMakeRange(0, [result length]) withTemplate:@"<ifr***"];
result = [NSString stringWithString: newResult];
// Remove <form
regex = [NSRegularExpression regularExpressionWithPattern:@"<[\\s\\u200B&#x09;&#x0A;&#x0D;\\\\0]*f[\\s\\u200B&#x09;&#x0A;&#x0D;\\\\0]*o[\\s\\u200B&#x09;&#x0A;&#x0D;\\\\0]*r[\\s\\u200B&#x09;&#x0A;&#x0D;\\\\0]*m"
options: NSRegularExpressionCaseInsensitive error:&error];
newResult = [regex stringByReplacingMatchesInString:result options:0 range:NSMakeRange(0, [result length]) withTemplate:@"<for*"];
result = [NSString stringWithString: newResult];
// Remove </form
regex = [NSRegularExpression regularExpressionWithPattern:@"<[\\s\\u200B&#x09;&#x0A;&#x0D;\\\\0]*/[\\s\\u200B&#x09;&#x0A;&#x0D;\\\\0]*f[\\s\\u200B&#x09;&#x0A;&#x0D;\\\\0]*o[\\s\\u200B&#x09;&#x0A;&#x0D;\\\\0]*r[\\s\\u200B&#x09;&#x0A;&#x0D;\\\\0]*m"
options: NSRegularExpressionCaseInsensitive error:&error];
newResult = [regex stringByReplacingMatchesInString:result options:0 range:NSMakeRange(0, [result length]) withTemplate:@"</for*"];
result = [NSString stringWithString: newResult];
// Remove onload
regex = [NSRegularExpression regularExpressionWithPattern:@"onload="
options: NSRegularExpressionCaseInsensitive error:&error];