The remote Redhat Enterprise Linux 4 / 5 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2011:0887 advisory.

    Mozilla Thunderbird is a standalone mail and newsgroup client.

    A flaw was found in the way Thunderbird handled malformed JPEG images. An     HTML mail message containing a malicious JPEG image could cause Thunderbird     to crash or, potentially, execute arbitrary code with the privileges of the     user running Thunderbird. (CVE-2011-2377)

    Multiple dangling pointer flaws were found in Thunderbird. Malicious HTML     content could cause Thunderbird to crash or, potentially, execute arbitrary     code with the privileges of the user running Thunderbird. (CVE-2011-0083,     CVE-2011-0085, CVE-2011-2363)

    Several flaws were found in the processing of malformed HTML content.
    Malicious HTML content could cause Thunderbird to crash or, potentially,     execute arbitrary code with the privileges of the user running Thunderbird.
    (CVE-2011-2364, CVE-2011-2365, CVE-2011-2374, CVE-2011-2375, CVE-2011-2376)

    An integer overflow flaw was found in the way Thunderbird handled     JavaScript Array objects. Malicious content could cause Thunderbird to     execute JavaScript with the privileges of the user running Thunderbird.
    (CVE-2011-2371)

    A use-after-free flaw was found in the way Thunderbird handled malformed     JavaScript. Malicious content could cause Thunderbird to execute JavaScript     with the privileges of the user running Thunderbird. (CVE-2011-2373)

    It was found that Thunderbird could treat two separate cookies (for web     content) as interchangeable if both were for the same domain name but one     of those domain names had a trailing . character. This violates the     same-origin policy and could possibly lead to data being leaked to the     wrong domain. (CVE-2011-2362)

    All Thunderbird users should upgrade to this updated package, which     resolves these issues. All running instances of Thunderbird must be     restarted for the update to take effect.

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 / 5 : thunderbird (RHSA-2011:0887)

high Nessus Plugin ID 55400

Version 1.23