Opera: Buffer overflow
Gentoo Linux Security Advisory
||GLSA 200606-01 / opera
||June 07, 2006
||June 07, 2006: 01
All supported architectures
Opera contains an integer signedness error resulting in a buffer overflow
which may allow a remote attacker to execute arbitrary code.
Opera is a multi-platform web browser.
SEC Consult has discovered a buffer overflow in the code
processing style sheet attributes. It is caused by an integer
signedness error in a length check followed by a call to a string
function. It seems to be hard to exploit this buffer overflow to
execute arbitrary code because of the very large amount memory that has
to be copied.
A remote attacker can entice a user to visit a web page containing
a specially crafted style sheet attribute that will crash the user's
browser and maybe lead to the execution of arbitrary code.
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-8.54"