Opera: Command-line URL shell command injection
Gentoo Linux Security Advisory
||GLSA 200512-10 / opera
||December 18, 2005
||December 18, 2005: 01
All supported architectures
Lack of URL validation in Opera command-line wrapper could be abused to
execute arbitrary commands.
Opera is a multi-platform web browser.
Peter Zelezny discovered that the shell script used to launch
Opera parses shell commands that are enclosed within backticks in the
URL provided via the command line.
A remote attacker could exploit this vulnerability by enticing a
user to follow a specially crafted URL from a tool that uses Opera to
open URLs, resulting in the execution of arbitrary commands on the
There is no known workaround at this time.
All Opera users should upgrade to the latest version:
Code Listing 3.1: Resolution
# emerge --sync
# emerge --ask --oneshot --verbose ">=www-client/opera-8.51"