Red Hat Errata System 5.3 2011-03-22T12:43:16 Red Hat Enterprise Linux 4 Mozilla Thunderbird is a standalone mail and newsgroup client. Several flaws were found in the way Thunderbird processed certain malformed JavaScript code. A malicious HTML mail message could execute JavaScript code in such a way that may result in Thunderbird crashing or executing arbitrary code as the user running Thunderbird. JavaScript support is disabled by default in Thunderbird; these issues are not exploitable unless the user has enabled JavaScript. (CVE-2007-0775, CVE-2007-0777, CVE-2007-1092) A flaw was found in the way Thunderbird processed text/enhanced and text/richtext formatted mail message. A specially crafted mail message could execute arbitrary code with the privileges of the user running Thunderbird. (CVE-2007-1282) Several cross-site scripting (XSS) flaws were found in the way Thunderbird processed certain malformed HTML mail messages. A malicious HTML mail message could display misleading information which may result in a user unknowingly divulging sensitive information such as a password. (CVE-2006-6077, CVE-2007-0995, CVE-2007-0996) A flaw was found in the way Thunderbird cached web content on the local disk. A malicious HTML mail message may be able to inject arbitrary HTML into a browsing session if the user reloads a targeted site. (CVE-2007-0778) A flaw was found in the way Thunderbird displayed certain web content. A malicious HTML mail message could generate content which could overlay user interface elements such as the hostname and security indicators, tricking a user into thinking they are visiting a different site. (CVE-2007-0779) Two flaws were found in the way Thunderbird displayed blocked popup windows. If a user can be convinced to open a blocked popup, it is possible to read arbitrary local files, or conduct an XSS attack against the user. (CVE-2007-0780, CVE-2007-0800) Two buffer overflow flaws were found in the Network Security Services (NSS) code for processing the SSLv2 protocol. Connecting to a malicious secure web server could cause the execution of arbitrary code as the user running Thunderbird. (CVE-2007-0008, CVE-2007-0009) A flaw was found in the way Thunderbird handled the "location.hostname" value during certain browser domain checks. This flaw could allow a malicious HTML mail message to set domain cookies for an arbitrary site, or possibly perform an XSS attack. (CVE-2007-0981) Users of Thunderbird are advised to apply this update, which contains Thunderbird version 1.5.0.10 that corrects these issues. Critical Copyright 2007 Red Hat, Inc. CVE-2006-6077 CVE-2007-0008 CVE-2007-0009 CVE-2007-0775 CVE-2007-0777 CVE-2007-0778 CVE-2007-0779 CVE-2007-0780 CVE-2007-0800 CVE-2007-0981 CVE-2007-0995 CVE-2007-0996 CVE-2007-1092 CVE-2007-1282 [PATCH] Thunderbird's remote doesn't allow attachments Thunderbird startup script not updated for the add-on based locale CVE-2007-0775 Multiple Thunderbird flaws (CVE-2007-0777, CVE-2007-0995, CVE-2007-0996, CVE-2006-6077, CVE-2007-0778, CVE-2007-0779, CVE-2007-0780, CVE-2007-0800, CVE-2007-0008, CVE-2007-0009, CVE-2007-0981, CVE-2007-1092) cpe:/o:redhat:enterprise_linux