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html: Fix quadratic behavior in htmlParseTryOrFinish

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Fix check for end of script content.

Found by OSS-Fuzz.
This commit is contained in:
Nick Wellnhofer
2023-03-15 16:56:36 +01:00
parent 14c62e0dd3
commit 4b3452d171
1 changed files with 7 additions and 1 deletions
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8
HTMLparser.c
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@@ -6000,8 +6000,14 @@ htmlParseTryOrFinish(htmlParserCtxtPtr ctxt, int terminate) {
if (idx < 0) if (idx < 0)
goto done; goto done;
val = in->cur[idx + 2]; val = in->cur[idx + 2];
if (val == 0) /* bad cut of input */ if (val == 0) { /* bad cut of input */
/*
* FIXME: htmlParseScript checks for additional
* characters after '</'.
*/
ctxt->checkIndex = idx;
goto done; goto done;
}
} }
htmlParseScript(ctxt); htmlParseScript(ctxt);
if ((cur == '<') && (next == '/')) { if ((cur == '<') && (next == '/')) {