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Secunia Security Advisory 16645

Secunia Security Advisory 16645
Posted Sep 20, 2005
Authored by Secunia | Site secunia.com

Secunia Security Advisory - 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.

tags | advisory, spoof, vulnerability
SHA-256 | 3549ef96e3aa3dcd07401caea4f76ad545fbb260bf4b89da55aeabbd29231af9

Secunia Security Advisory 16645

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TITLE:
Opera Mail Client Attachment Spoofing and Script Insertion

SECUNIA ADVISORY ID:
SA16645

VERIFY ADVISORY:
http://secunia.com/advisories/16645/

CRITICAL:
Moderately critical

IMPACT:
Cross Site Scripting, Spoofing

WHERE:
>From remote

SOFTWARE:
Opera 8.x
http://secunia.com/product/4932/

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.

SOLUTION:
Update to version 8.50.
http://www.opera.com/download/

PROVIDED AND/OR DISCOVERED BY:
Jakob Balle, Secunia Research.

ORIGINAL ADVISORY:
Secunia Research:
http://secunia.com/secunia_research/2005-42/

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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