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Opera: Multiple spoofing vulnerabilities


1.  Gentoo Linux Security Advisory

Version Information

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


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

2.  Impact Information


Opera is a multi-platform web browser.


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.


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


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


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

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