Opera: Multiple spoofing vulnerabilities

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200407-15 / opera
Release Date	July 20, 2004
Latest Revision	July 20, 2004: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
www-client/opera	<= 7.52	>= 7.53	All supported architectures

Related bugreports: #56311, #56109

Synopsis

Opera contains three vulnerabilities, allowing an attacker to impersonate legitimate websites with URI obfuscation or to spoof websites with frame injection.

2. Impact Information

Background

Opera is a multi-platform web browser.

Description

Opera fails to remove illegal characters from an URI of a link and to check that the target frame of a link belongs to the same website as the link. Opera also updates the address bar before loading a page. Additionally, Opera contains a certificate verification problem.

Impact

These vulnerabilities could allow an attacker to impersonate legitimate websites to steal sensitive information from users. This could be done by obfuscating the real URI of a link or by injecting a malicious frame into an arbitrary frame of another browser window.

3. Resolution Information

Workaround

There is no known workaround at this time. All users are encouraged to upgrade to the latest available version.

Resolution

All Opera users should upgrade to the latest stable version:

Code Listing 3.1: Resolution

# emerge sync
# emerge -pv ">=www-client/opera-7.53"
# emerge ">=www-client/opera-7.53"

4. References

Page updated July 20, 2004

Summary: This is a Gentoo Linux Security Advisory

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