The remote Redhat Enterprise Linux 4 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2005:176 advisory.

    Mozilla Firefox is an open source Web browser.

    A bug was found in the Firefox string handling functions. If a malicious     website is able to exhaust a system's memory, it becomes possible to     execute arbitrary code. The Common Vulnerabilities and Exposures project     (cve.mitre.org) has assigned the name CAN-2005-0255 to this issue.

    A bug was found in the way Firefox handles pop-up windows. It is possible     for a malicious website to control the content in an unrelated site's     pop-up window. (CAN-2004-1156)

    A bug was found in the way Firefox allows plug-ins to load privileged     content into a frame. It is possible that a malicious webpage could trick a     user into clicking in certain places to modify configuration settings or     execute arbitrary code. (CAN-2005-0232 and CAN-2005-0527).

    A flaw was found in the way Firefox displays international domain names. It     is possible for an attacker to display a valid URL, tricking the user into     thinking they are viewing a legitimate webpage when they are not.
    (CAN-2005-0233)

    A bug was found in the way Firefox handles plug-in temporary files. A     malicious local user could create a symlink to a victims directory, causing     it to be deleted when the victim exits Firefox. (CAN-2005-0578)

    A bug has been found in one of Firefox's UTF-8 converters. It may be     possible for an attacker to supply a specially crafted UTF-8 string to the     buggy converter, leading to arbitrary code execution. (CAN-2005-0592)

    A bug was found in the Firefox javascript security manager. If a user drags     a malicious link to a tab, the javascript security manager is bypassed     which could result in remote code execution or information disclosure.
    (CAN-2005-0231)

    A bug was found in the way Firefox displays the HTTP authentication prompt.
    When a user is prompted for authentication, the dialog window is displayed     over the active tab, regardless of the tab that caused the pop-up to appear     and could trick a user into entering their username and password for a     trusted site.  (CAN-2005-0584)

    A bug was found in the way Firefox displays the save file dialog. It is     possible for a malicious webserver to spoof the Content-Disposition header,     tricking the user into thinking they are downloading a different filetype.
    (CAN-2005-0586)

    A bug was found in the way Firefox handles users down-arrow through auto     completed choices. When an autocomplete choice is selected, the information     is copied into the input control, possibly allowing a malicious web site to     steal information by tricking a user into arrowing through autocompletion     choices. (CAN-2005-0589)

    Several bugs were found in the way Firefox displays the secure site icon.
    It is possible that a malicious website could display the secure site icon     along with incorrect certificate information. (CAN-2005-0593)

    A bug was found in the way Firefox displays the download dialog window. A     malicious site can obfuscate the content displayed in the source field,     tricking a user into thinking they are downloading content from a trusted     source. (CAN-2005-0585)

    A bug was found in the way Firefox handles xsl:include and xsl:import     directives. It is possible for a malicious website to import XSLT     stylesheets from a domain behind a firewall, leaking information to an     attacker. (CAN-2005-0588)

    A bug was found in the way Firefox displays the installation confirmation     dialog. An attacker could add a long user:pass before the true hostname,     tricking a user into thinking they were installing content from a trusted     source. (CAN-2005-0590)

    A bug was found in the way Firefox displays download and security dialogs.
    An attacker could cover up part of a dialog window tricking the user into     clicking Allow or Open, which could potentially lead to arbitrary code     execution. (CAN-2005-0591)

    Users of Firefox are advised to upgrade to this updated package which     contains Firefox version 1.0.1 and is not vulnerable to these issues.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Detections

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RHEL 4 : firefox (RHSA-2005:176)

high Nessus Plugin ID 17252

Version 1.26