| Description: | Mozilla Thunderbird is a standalone mail and newsgroup client.
The Mozilla Foundation has discontinued support for the Mozilla Thunderbird 1.0 branch. This update deprecates the Mozilla Thunderbird 1.0 branch in Red Hat Enterprise Linux 4 in favor of the supported Mozilla Thunderbird 1.5 branch.
This update also resolves a number of outstanding Thunderbird security issues:
Several flaws were found in the way Thunderbird processed certain javascript actions. A malicious mail message could execute arbitrary javascript instructions with the permissions of "chrome", allowing the page to steal sensitive information or install browser malware. (CVE-2006-2776, CVE-2006-2784, CVE-2006-2785, CVE-2006-2787, CVE-2006-3807, CVE-2006-3809)
Several denial of service flaws were found in the way Thunderbird processed certain mail messages. A malicious web page could crash the browser or possibly execute arbitrary code as the user running Thunderbird. (CVE-2006-2779, CVE-2006-2780, CVE-2006-3801, CVE-2006-3677, CVE-2006-3113, CVE-2006-3803, CVE-2006-3805, CVE-2006-3806, CVE-2006-3811)
Several flaws were found in the way Thunderbird processed certain javascript actions. A malicious mail message could conduct a cross-site scripting attack or steal sensitive information (such as cookies owned by other domains). (CVE-2006-3802, CVE-2006-3810)
A form file upload flaw was found in the way Thunderbird handled javascript input object mutation. A malicious mail message could upload an arbitrary local file at form submission time without user interaction. (CVE-2006-2782)
A denial of service flaw was found in the way Thunderbird called the crypto.signText() javascript function. A malicious mail message could crash the browser if the victim had a client certificate loaded. (CVE-2006-2778)
A flaw was found in the way Thunderbird processed Proxy AutoConfig scripts. A malicious Proxy AutoConfig server could execute arbitrary javascript instructions with the permissions of "chrome", allowing the page to steal sensitive information or install client malware. (CVE-2006-3808)
Note: Please note that JavaScript support is disabled by default in Thunderbird. The above issues are not exploitable with JavaScript disabled.
Two flaws were found in the way Thunderbird displayed malformed inline vcard attachments. If a victim viewed an email message containing a carefully crafted vcard it was possible to execute arbitrary code as the user running Thunderbird. (CVE-2006-2781, CVE-2006-3804)
A cross site scripting flaw was found in the way Thunderbird processed Unicode Byte-order-Mark (BOM) markers in UTF-8 mail messages. A malicious web page could execute a script within the browser that a web input sanitizer could miss due to a malformed "script" tag. (CVE-2006-2783)
Two HTTP response smuggling flaws were found in the way Thunderbird processed certain invalid HTTP response headers. A malicious web site could return specially crafted HTTP response headers which may bypass HTTP proxy restrictions. (CVE-2006-2786)
A double free flaw was found in the way the nsIX509::getRawDER method was called. If a victim visited a carefully crafted web page, it was possible to crash Thunderbird. (CVE-2006-2788)
Users of Thunderbird are advised to upgrade to this update, which contains Thunderbird version 1.5.0.5 that corrects these issues.
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