Firefox 0.9, Thunderbird 0.6 and other versions before 0.9, and Mozilla 1.7 before 1.7.5 save temporary files with world-readable permissions, which allows local users to read certain web content or attachments that belong to other users, e.g. content that is managed by helper applications such as PDF.

Updated Mozilla packages that fix various security bugs are now available.

This update has been rated as having Important security impact by the Red Hat Security Response Team.

Mozilla is an open source Web browser, advanced email and newsgroup client, IRC chat client, and HTML editor.

Several bugs were found with the way Mozilla displays the secure site icon. It is possible that a malicious website could display the secure site icon along with incorrect certificate information. (CVE-2005-0143 CVE-2005-0593)

A bug was found in the way Mozilla handles synthetic middle click events. It is possible for a malicious web page to steal the contents of a victims clipboard. (CVE-2005-0146)

Several bugs were found with the way Mozilla handles temporary files.
A local user could view sensitive temporary information or delete arbitrary files. (CVE-2005-0142 CVE-2005-0578)

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

A flaw was found in the way Mozilla 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. (CVE-2005-0233)

A bug was found in the way Mozilla processes XUL content. If a malicious web page can trick a user into dragging an object, it is possible to load malicious XUL content. (CVE-2005-0401)

A bug was found in the way Mozilla 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. (CVE-2005-0588)

Several bugs were found in the way Mozilla displays alert dialogs. It is possible for a malicious webserver or website to trick a user into thinking the dialog window is being generated from a trusted site.
(CVE-2005-0586 CVE-2005-0591 CVE-2005-0585 CVE-2005-0590 CVE-2005-0584)

A bug was found in the Mozilla 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. (CVE-2005-0231)

A bug was found in the way Mozilla 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. (CVE-2005-0232 and CVE-2005-0527)

A bug was found in the way Mozilla handles anonymous functions during regular expression string replacement. It is possible for a malicious web page to capture a random block of browser memory. (CVE-2005-0989)

A bug was found in the way Mozilla displays pop-up windows. If a user choses to open a pop-up window whose URL is malicious JavaScript, the script will be executed with elevated privileges. (CVE-2005-1153)

A bug was found in the way Mozilla installed search plugins. If a user chooses to install a search plugin from a malicious site, the new plugin could silently overwrite an existing plugin. This could allow the malicious plugin to execute arbitrary code and stealm sensitive information. (CVE-2005-1156 CVE-2005-1157)

Several bugs were found in the Mozilla JavaScript engine. A malicious web page could leverage these issues to execute JavaScript with elevated privileges or steal sensitive information. (CVE-2005-1154 CVE-2005-1155 CVE-2005-1159 CVE-2005-1160)

Users of Mozilla are advised to upgrade to this updated package which contains Mozilla version 1.7.7 to correct these issues.

USN-149-1 fixed some vulnerabilities in the Ubuntu 5.04 (Hoary Hedgehog) version of Firefox. The version shipped with Ubuntu 4.10 (Warty Warthog) is also vulnerable to these flaws, so it needs to be upgraded as well. Please see

http://www.ubuntulinux.org/support/documentation/usn/usn-149-1

for the original advisory.

This update also fixes several older vulnerabilities; Some of them could be exploited to execute arbitrary code with full user privileges if the user visited a malicious website. (MFSA-2005-01 to MFSA-2005-44; please see the following website for details:
http://www.mozilla.org/projects/security/known-vulnerabilities.html)

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Redhat Enterprise Linux 4 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2005:335 advisory.

    Mozilla is an open source Web browser, advanced email and newsgroup client,     IRC chat client, and HTML editor.

    A buffer overflow bug was found in the way Mozilla processes GIF images. It     is possible for an attacker to create a specially crafted GIF image, which     when viewed by a victim will execute arbitrary code as the victim. The     Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned     the name CAN-2005-0399 to this issue.

    A bug was found in the way Mozilla responds to proxy auth requests. It is     possible for a malicious webserver to steal credentials from a victims     browser by issuing a 407 proxy authentication request. (CAN-2005-0147)

    A bug was found in the way Mozilla displays dialog windows. It is possible     that a malicious web page which is being displayed in a background tab     could present the user with a dialog window appearing to come from the     active page. (CAN-2004-1380)

    A bug was found in the way Mozilla Mail handles cookies when loading     content over HTTP regardless of the user's preference. It is possible that     a particular user could be tracked through the use of malicious mail     messages which load content over HTTP. (CAN-2005-0149)

    A flaw was found in the way Mozilla 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 Mozilla 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 Mozilla saves temporary files. Temporary files     are saved with world readable permissions, which could allow a local     malicious user to view potentially sensitive data. (CAN-2005-0142)

    A bug was found in the way Mozilla handles synthetic middle click events.
    It is possible for a malicious web page to steal the contents of a victims     clipboard. (CAN-2005-0146)

    A bug was found in the way Mozilla processes XUL content.  If a malicious     web page can trick a user into dragging an object, it is possible to load     malicious XUL content. (CAN-2005-0401)

    A bug was found in the way Mozilla loads links in a new tab which are     middle clicked. A malicious web page could read local files or modify     privileged chrom settings. (CAN-2005-0141)

    A bug was found in the way Mozilla displays the secure site icon. A     malicious web page can use a view-source URL targetted at a secure page,     while loading an insecure page, yet the secure site icon shows the previous     secure state. (CAN-2005-0144)

    A bug was found in the way Mozilla displays the secure site icon. A     malicious web page can display the secure site icon by loading a binary     file from a secured site. (CAN-2005-0143)

    A bug was found in the way Mozilla 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)

    Users of Mozilla are advised to upgrade to this updated package which     contains Mozilla version 1.7.6 to correct 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.

ID	Name	Product	Family	Severity
21930	CentOS 3 : mozilla (CESA-2005:384)	Nessus	CentOS Local Security Checks	high
20546	Ubuntu 4.10 : mozilla-firefox vulnerabilities (USN-149-3)	Nessus	Ubuntu Local Security Checks	high
18162	RHEL 2.1 / 3 : Mozilla (RHSA-2005:384)	Nessus	Red Hat Local Security Checks	high
17626	RHEL 4 : mozilla (RHSA-2005:335)	Nessus	Red Hat Local Security Checks	high

Detections

Analytics

CVE-2005-0142

medium

Tenable Plugins

high

high

high

high