Opera users on *nix platforms are been urged to update their browser software following the discovery of a security flaw that creates a means for hackers to compromise vulnerable systems.
The vulnerability stems from a security flaw in a shell script used by Opera to safely parse shell commands. That means Opera on Unix might execute a command line embedded in a URL. Exploitation would involve tricking users of applications that uses Opera as the default browser (e.g. the mail client Evolution on Red Hat Enterprise Linux 4) into following a malicious link. The vulnerability can only be exploited on Unix / Linux based environments, according to security notification firm Secunia.

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