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secunia-opera.txt

secunia-opera.txt
Posted Sep 23, 2005
Authored by Jakob Balle | Site secunia.com

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. Version 8.02 is affected.

tags | advisory, spoof, vulnerability
SHA-256 | aca5e53fd676ad9100ad9b6862edc517cceb04b62c8877cc5f3f751332155c93

secunia-opera.txt

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====================================================================== 

Secunia Research 20/09/2005

- Opera Mail Client Attachment Spoofing and Script Insertion -

======================================================================
Table of Contents

Affected Software....................................................1
Severity.............................................................2
Description of Vulnerability.........................................3
Solution.............................................................4
Time Table...........................................................5
Credits..............................................................6
References...........................................................7
About Secunia........................................................8
Verification.........................................................9

======================================================================
1) Affected Software

Opera 8.02

Prior versions may also be affected.

======================================================================
2) Severity

Rating: Moderately Critical
Impact: Script Insertion, Spoofing
Where: From Remote

======================================================================
3) Description of Vulnerability

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.

======================================================================
4) Solution

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

======================================================================
5) Time Table

01/09/2005 - Initial vendor notification.
20/09/2005 - Public disclosure.

======================================================================
6) Credits

Discovered by Jakob Balle, Secunia Research.

======================================================================
7) References

No references available.

======================================================================
8) About Secunia

Secunia collects, validates, assesses, and writes advisories regarding
all the latest software vulnerabilities disclosed to the public. These
advisories are gathered in a publicly available database at the
Secunia website:

http://secunia.com/

Secunia offers services to our customers enabling them to receive all
relevant vulnerability information to their specific system
configuration.

Secunia offers a FREE mailing list called Secunia Security Advisories:

http://secunia.com/secunia_security_advisories/

======================================================================
9) Verification

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2005-42/advisory/

Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/

======================================================================

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