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Opera: Command-line URL shell command injection


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200512-10 / opera
Release Date December 18, 2005
Latest Revision December 18, 2005: 01
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
www-client/opera < 8.51 >= 8.51 All supported architectures

Related bugreports: #113239


Lack of URL validation in Opera command-line wrapper could be abused to execute arbitrary commands.

2.  Impact Information


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 targeted machine.

3.  Resolution Information


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"

4.  References


Page updated December 18, 2005

Summary: This is a Gentoo Linux Security Advisory

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