A number of security vulnerabilities have been discovered and corrected in the latest Mozilla Thunderbird program, version 1.5.0.10.

This update provides the latest Thunderbird to correct these issues.

This update brings Mozilla Thunderbird to version 1.5.0.10. It contains stability fixes and some security fixes :

  - MFSA 2007-01: As part of the Thunderbird 1.5.0.10 update     releases several bugs were fixed to improve the     stability of the browser. Some of these were crashes     that showed evidence of memory corruption and we presume     that with enough effort at least some of these could be     exploited to run arbitrary code. These fixes affected     the layout engine (CVE-2007-0775), SVG renderer     (CVE-2007-0776) and JavaScript engine (CVE-2007-0777).

  - MFSA 2007-06: CVE-2007-0008: SSL clients such as Firefox     and Thunderbird can suffer a buffer overflow if a     malicious server presents a certificate with a public     key that is too small to encrypt the entire 'Master     Secret'. Exploiting this overflow appears to be     unreliable but possible if the SSLv2 protocol is     enabled.

Updated SeaMonkey packages that fix several security bugs are now available for Red Hat Enterprise Linux 2.1, 3, and 4.

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

[Updated 26 February 2007] Packages for Red Hat Enterprise Linux 4 have been updated to correct an issue which prevented Evolution and other applications linked against the NSS library from functioning.

[Updated 12 March 2007] Packages for Red Hat Enterprise Linux 2.1 and 3 have been updated to correct an issue which prevented Evolution and other applications linked against the NSS library from functioning.

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

Several flaws were found in the way SeaMonkey processed certain malformed JavaScript code. A malicious web page could execute JavaScript code in such a way that may result in SeaMonkey crashing or executing arbitrary code as the user running SeaMonkey.
(CVE-2007-0775, CVE-2007-0777)

Several cross-site scripting (XSS) flaws were found in the way SeaMonkey processed certain malformed web pages. A malicious web page 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 SeaMonkey cached web pages on the local disk. A malicious web page 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 SeaMonkey displayed certain web content. A malicious web page 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 SeaMonkey 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 SeaMonkey. (CVE-2007-0008, CVE-2007-0009)

A flaw was found in the way SeaMonkey handled the 'location.hostname' value during certain browser domain checks. This flaw could allow a malicious web site to set domain cookies for an arbitrary site, or possibly perform an XSS attack. (CVE-2007-0981)

Users of SeaMonkey are advised to upgrade to these erratum packages, which contain SeaMonkey version 1.0.8 that corrects these issues.

Updated firefox packages that fix several security bugs are now available for Red Hat Enterprise Linux 4.

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

Mozilla Firefox is an open source Web browser.

Several flaws were found in the way Firefox processed certain malformed JavaScript code. A malicious web page could execute JavaScript code in such a way that may result in Firefox crashing or executing arbitrary code as the user running Firefox. (CVE-2007-0775, CVE-2007-0777)

Several cross-site scripting (XSS) flaws were found in the way Firefox processed certain malformed web pages. A malicious web page 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 Firefox cached web pages on the local disk. A malicious web page 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 Firefox displayed certain web content. A malicious web page 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 Firefox 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 Firefox. (CVE-2007-0008, CVE-2007-0009)

A flaw was found in the way Firefox handled the 'location.hostname' value during certain browser domain checks. This flaw could allow a malicious web site to set domain cookies for an arbitrary site, or possibly perform an XSS attack. (CVE-2007-0981)

Users of Firefox are advised to upgrade to these erratum packages, which contain Firefox version 1.5.0.10 that corrects these issues.

Updated thunderbird packages that fix several security bugs are now available for Red Hat Enterprise Linux 4.

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

[Updated 06 March 2007] Updated text description to add CVE-2007-1282 and remove CVE-2007-0994, which was mistakenly listed as affecting Thunderbird. No changes have been made to these erratum packages.

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.

This update brings Mozilla Firefox to security update version 2.0.0.2.

  - MFSA 2007-01: As part of the Firefox 2.0.0.2 and     1.5.0.10 update releases several bugs were fixed to     improve the stability of the browser. Some of these were     crashes that showed evidence of memory corruption and we     presume that with enough effort at least some of these     could be exploited to run arbitrary code. These fixes     affected the layout engine (CVE-2007-0775), SVG renderer     (CVE-2007-0776) and JavaScript engine (CVE-2007-0777).

  - MFSA 2007-02: Various enhancements were done to make XSS     exploits against websites less effective. These included     fixes for invalid trailing characters (CVE-2007-0995),     child frame character set inheritance (CVE-2007-0996),     password form injection (CVE-2006-6077), and the Adobe     Reader universal XSS problem.

  - MFSA 2007-03/CVE-2007-0778: AAd reported a potential     disk cache collision that could be exploited by remote     attackers to steal confidential data or execute code.

  - MFSA 2007-04/CVE-2007-0779: David Eckel reported that     browser UI elements--such as the host name and security     indicators--could be spoofed by using a large, mostly     transparent, custom cursor and adjusting the CSS3     hotspot property so that the visible part of the cursor     floated outside the browser content area.

  - MFSA 2007-05: Manually opening blocked popups could be     exploited by remote attackers to allow XSS attacks     (CVE-2007-0780) or to execute code in local files     (CVE-2007-0800).

  - MFSA 2007-06: Two buffer overflows were found in the NSS     handling of Mozilla.

    CVE-2007-0008: SSL clients such as Firefox and     Thunderbird can suffer a buffer overflow if a malicious     server presents a certificate with a public key that is     too small to encrypt the entire 'Master Secret'.
    Exploiting this overflow appears to be unreliable but     possible if the SSLv2 protocol is enabled.

    CVE-2007-0009: Servers that use NSS for the SSLv2     protocol can be exploited by a client that presents a     'Client Master Key' with invalid length values in any of     several fields that are used without adequate error     checking. This can lead to a buffer overflow that     presumably could be exploitable.

  - MFSA 2007-06/CVE-2007-0981: Michal Zalewski demonstrated     that setting location.hostname to a value with embedded     null characters can confuse the browsers domain checks.
    Setting the value triggers a load, but the networking     software reads the hostname only up to the null     character while other checks for 'parent domain' start     at the right and so can have a completely different idea     of what the current host is.

This security update brings Mozilla SeaMonkey to version 1.0.8.

Please also see http://www.mozilla.org/projects/security/known-vulnerabilities.html for more details.

It includes fixes to the following security problems :

  - MFSA 2007-01: As part of the Firefox 2.0.0.2 and     1.5.0.10 update releases several bugs were fixed to     improve the stability of the browser. Some of these were     crashes that showed evidence of memory corruption and we     presume that with enough effort at least some of these     could be exploited to run arbitrary code. These fixes     affected the layout engine (CVE-2007-0775), SVG renderer     (CVE-2007-0776) and JavaScript engine (CVE-2007-0777).

  - MFSA 2007-02: Various enhancements were done to make XSS     exploits against websites less effective. These included     fixes for invalid trailing characters (CVE-2007-0995),     child frame character set inheritance (CVE-2007-0996),     password form injection (CVE-2006-6077), and the Adobe     Reader universal XSS problem.

  - MFSA 2007-03/CVE-2007-0778: AAd reported a potential     disk cache collision that could be exploited by remote     attackers to steal confidential data or execute code.

  - MFSA 2007-04/CVE-2007-0779: David Eckel reported that     browser UI elements--such as the host name and security     indicators--could be spoofed by using a large, mostly     transparent, custom cursor and adjusting the CSS3     hotspot property so that the visible part of the cursor     floated outside the browser content area.

  - MFSA 2007-05: Manually opening blocked popups could be     exploited by remote attackers to allow XSS attacks     (CVE-2007-0780) or to execute code in local files     (CVE-2007-0800).

  - MFSA 2007-06: Two buffer overflows were found in the NSS     handling of Mozilla.

    CVE-2007-0008: SSL clients such as Firefox and     Thunderbird can suffer a buffer overflow if a malicious     server presents a certificate with a public key that is     too small to encrypt the entire 'Master Secret'.
    Exploiting this overflow appears to be unreliable but     possible if the SSLv2 protocol is enabled.

    CVE-2007-0009: Servers that use NSS for the SSLv2     protocol can be exploited by a client that presents a     'Client Master Key' with invalid length values in any of     several fields that are used without adequate error     checking. This can lead to a buffer overflow that     presumably could be exploitable.

  - MFSA 2007-06/CVE-2007-0981: Michal Zalewski demonstrated     that setting location.hostname to a value with embedded     null characters can confuse the browsers domain checks.
    Setting the value triggers a load, but the networking     software reads the hostname only up to the null     character while other checks for 'parent domain' start     at the right and so can have a completely different idea     of what the current host is.

USN-428-1 fixed vulnerabilities in Firefox 1.5. However, changes to library paths caused applications depending on libnss3 to fail to start up. This update fixes the problem.

We apologize for the inconvenience.

Several flaws have been found that could be used to perform Cross-site scripting attacks. A malicious website could exploit these to modify the contents or steal confidential data (such as passwords) from other opened web pages. (CVE-2006-6077, CVE-2007-0780, CVE-2007-0800, CVE-2007-0981, CVE-2007-0995, CVE-2007-0996)

The SSLv2 protocol support in the NSS library did not sufficiently check the validity of public keys presented with a SSL certificate. A malicious SSL website using SSLv2 could potentially exploit this to execute arbitrary code with the user's privileges. (CVE-2007-0008)

The SSLv2 protocol support in the NSS library did not sufficiently verify the validity of client master keys presented in an SSL client certificate. A remote attacker could exploit this to execute arbitrary code in a server application that uses the NSS library. (CVE-2007-0009)

Various flaws have been reported that could allow an attacker to execute arbitrary code with user privileges by tricking the user into opening a malicious web page.
(CVE-2007-0775, CVE-2007-0776, CVE-2007-0777, CVE-2007-1092) 

Two web pages could collide in the disk cache with the result that depending on order loaded the end of the longer document could be appended to the shorter when the shorter one was reloaded from the cache. It is possible a determined hacker could construct a targeted attack to steal some sensitive data from a particular web page. The potential victim would have to be already logged into the targeted service (or be fooled into doing so) and then visit the malicious site. (CVE-2007-0778)

David Eckel reported that browser UI elements--such as the host name and security indicators--could be spoofed by using custom cursor images and a specially crafted style sheet.
(CVE-2007-0779).

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.

ID	Name	Product	Family	Published	Updated	Severity
24778	Mandrake Linux Security Advisory : mozilla-thunderbird (MDKSA-2007:052)	Nessus	Mandriva Local Security Checks	3/7/2007	1/6/2021	high
27129	openSUSE 10 Security Update : MozillaThunderbird (MozillaThunderbird-2734)	Nessus	SuSE Local Security Checks	10/17/2007	1/14/2021	high
24707	RHEL 2.1 / 3 / 4 : seamonkey (RHSA-2007:0077)	Nessus	Red Hat Local Security Checks	2/26/2007	1/14/2021	high
24708	RHEL 4 : Firefox (RHSA-2007:0079)	Nessus	Red Hat Local Security Checks	2/26/2007	1/14/2021	high
24774	RHEL 4 : thunderbird (RHSA-2007:0078)	Nessus	Red Hat Local Security Checks	3/6/2007	1/14/2021	high
27118	openSUSE 10 Security Update : MozillaFirefox (MozillaFirefox-2647)	Nessus	SuSE Local Security Checks	10/17/2007	1/14/2021	high
27440	openSUSE 10 Security Update : seamonkey (seamonkey-2811)	Nessus	SuSE Local Security Checks	10/17/2007	1/14/2021	high
28022	Ubuntu 6.06 LTS : firefox regression (USN-428-2)	Nessus	Ubuntu Local Security Checks	11/10/2007	1/19/2021	high

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