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Moderately critical

Opera Mail Client Attachment Spoofing and Script Insertion

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Release Date:  2005-09-20    Last Update:  2005-09-27    Views:  37,723

Secunia Advisory SA16645

Where:

From remote

Impact:

Cross Site Scripting, Spoofing, Unknown

Solution Status:

Vendor Patch

Software:

CVE Reference(s):

Description


Secunia Research has discovered two vulnerabilities in the Opera Mail client, which can be exploited by a malicious person to conduct script insertion attacks and to spoof the name of attached files.

1. Attached files are opened without any warnings directly from the user's cache directory. This can be exploited to execute arbitrary JavaScript in context of "file://".

2. Normally, filename extensions are determined by the "Content-Type" in Opera Mail. However, by appending an additional '.' to the end of a filename, an HTML file could be spoofed to be e.g. "image.jpg.".

The two vulnerabilities combined may be exploited to conduct script insertion attacks if the user chooses to view an attachment named e.g. "image.jpg." e.g. resulting in disclosure of local files.

The vulnerabilities have been confirmed in Opera version 8.02, prior versions may also be vulnerable.

NOTE: Some other security issues with unknown impacts have also been reported by the vendor.


Solution:
Update to version 8.50.

Further details available to Secunia VIM customers

Provided and/or discovered by:
Jakob Balle, Secunia Research.

Original Advisory:
Secunia Research:
http://secunia.com/secunia_research/2005-42/

Deep Links:
Links available to Secunia VIM customers

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 Mail Client Attachment Spoofing and Script Insertion

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