[Marxism] Exploit code chases two Firefox flaws
mikedf at mail.amnh.org
Mon May 9 18:10:57 MDT 2005
Exploit code chases two Firefox flaws
By Dawn Kawamoto, CNET News.com
Published on ZDNet News: May 9, 2005, 8:14 AM PT
Two vulnerabilities in the popular Firefox browser have been rated
"extremely critical" because exploit code is now available to take
advantage of them.
The cross-site scripting and remote system access flaws were discovered in
Firefox version 1.0.3, but other versions may also be affected, said
security company Secunia, which issued the ratings Sunday.
The two vulnerabilities, when combined, can be exploited, but no known
cases have yet emerged where an attacker took advantage of the public
protected from being executed in the context of another URL in the history
"If you visit a malicious Web site, it can steal cookie information from
other Web sites you had previously visited," said Thomas Kristensen,
Secunia's chief technology officer. The attacker could then use that
information to engage in identity theft or gain access to other
password-protected sites that the victim visited.
A second vulnerability exists in the IconURL parameter in
InstallTrigger.install(). Information passed to this parameter is not
properly verified before it's used, allowing an attacker to gain user
privileges. This flaw could allow an attacker to gain and escalate user
privileges on a system.
People who want new extensions or themes need to go to the Mozilla update
service. These extensions and themes will need to be manually installed.
Since the vulnerabilities were discovered over the weekend, the Mozilla
Foundation, which owns Firefox, has taken preventive measures.
Mozilla has changed its update Web service and advises people to
However, people who download and install the Mozilla software from
third-party sites are still at risk, Kristensen said.
"The threat still exists but is less critical now," he noted. "People can
go to third-party sites to install the software, but it's not going to
happen on as wide a scale as it had with the Mozilla sites."
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