[MFSA-2019-11] Security vulnerabilities fixed in Thunderbird 60.6

Severity Critical

Affected Packages 1

Fixed Packages 1

CVEs 10

In general, these flaws cannot be exploited through email in the Thunderbird product because scripting is disabled when reading mail, but are potentially risks in browser or browser-like contexts.

CVE-2018-18506: Proxy Auto-Configuration file can define localhost access to be proxied (moderate)
When proxy auto-detection is enabled, if a web server serves a Proxy Auto-Configuration (PAC) file or if a PAC file is loaded locally, this PAC file can specify that requests to the localhost are to be sent through the proxy to another server. This behavior is disallowed by default when a proxy is manually configured, but when enabled could allow for attacks on services and tools that bind to the localhost for networked behavior if they are accessed through browsing.
CVE-2019-9788: Memory safety bugs fixed in Firefox 66, Firefox ESR 60.6, and Thunderbird 60.6 (critical)
Mozilla developers and community members Bob Clary, Chun-Min Chang, Aral Yaman, Andreea Pavel, Jonathan Kew, Gary Kwong, Alex Gaynor, Masayuki Nakano, and Anne van Kesteren reported memory safety bugs present in Firefox 65, Firefox ESR 60.5, and Thunderbird 60.5. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code.
CVE-2019-9790: Use-after-free when removing in-use DOM elements (critical)
A use-after-free vulnerability can occur when a raw pointer to a DOM element on a page is obtained using JavaScript and the element is then removed while still in use. This results in a potentially exploitable crash.
CVE-2019-9791: Type inference is incorrect for constructors entered through on-stack replacement with IonMonkey (critical)
The type inference system allows the compilation of functions that can cause type confusions between arbitrary objects when compiled through the IonMonkey just-in-time (JIT) compiler and when the constructor function is entered through on-stack replacement (OSR). This allows for possible arbitrary reading and writing of objects during an exploitable crash.
CVE-2019-9792: IonMonkey leaks JS_OPTIMIZED_OUT magic value to script (critical)
The IonMonkey just-in-time (JIT) compiler can leak an internal <code>JS_OPTIMIZED_OUT</code> magic value to the running script during a bailout. This magic value can then be used by JavaScript to achieve memory corruption, which results in a potentially exploitable crash.
CVE-2019-9793: Improper bounds checks when Spectre mitigations are disabled (high)
A mechanism was discovered that removes some bounds checking for string, array, or typed array accesses if Spectre mitigations have been disabled. This vulnerability could allow an attacker to create an arbitrary value in compiled JavaScript, for which the range analysis will infer a fully controlled, incorrect range in circumstances where users have explicitly disabled Spectre mitigations.
Note: Spectre mitigations are currently enabled for all users by default settings.
CVE-2019-9794: Command line arguments not discarded during execution (high)
A vulnerability was discovered where specific command line arguments are not properly discarded during Firefox invocation as a shell handler for URLs. This could be used to retrieve and execute files whose location is supplied through these command line arguments if Firefox is configured as the default URI handler for a given URI scheme in third party applications and these applications insufficiently sanitize URL data.
Note: This issue only affects Windows operating systems. Other operating systems are unaffected.
CVE-2019-9795: Type-confusion in IonMonkey JIT compiler (high)
A vulnerability where type-confusion in the IonMonkey just-in-time (JIT) compiler could potentially be used by malicious JavaScript to trigger a potentially exploitable crash.
CVE-2019-9796: Use-after-free with SMIL animation controller (high)
A use-after-free vulnerability can occur when the SMIL animation controller incorrectly registers with the refresh driver twice when only a single registration is expected. When a registration is later freed with the removal of the animation controller element, the refresh driver incorrectly leaves a dangling pointer to the driver's observer array.
CVE-2019-9801: Windows programs that are not 'URL Handlers' are exposed to web content (moderate)
Firefox will accept any registered Program ID as an external protocol handler and offer to launch this local application when given a matching URL on Windows operating systems. This should only happen if the program has specifically registered itself as a "URL Handler" in the Windows registry.
Note: This issue only affects Windows operating systems. Other operating systems are unaffected.

Package	Affected Version
pkg:mozilla/Thunderbird	< 60.6

Package	Fixed Version
pkg:mozilla/Thunderbird	= 60.6

ID

MFSA-2019-11

Severity

critical

URL

https://www.mozilla.org/en-US/security/advisories/mfsa2019-11

Published

2019-03-19T00:00:00
(5 years ago)

Modified

2019-03-19T00:00:00
(5 years ago)

Other Advisories

Source	# ID	Name	URL
Bugzilla	1503393		https://bugzilla.mozilla.org/show_bug.cgi?id=1503393
Bugzilla	1518001	Memory safety bugs fixed in Firefox 66, Firefox ESR 60.6, and Thunderbird 60.6	https://bugzilla.mozilla.org/show_bug.cgi?id=1518001
Bugzilla	1521304	Memory safety bugs fixed in Firefox 66, Firefox ESR 60.6, and Thunderbird 60.6	https://bugzilla.mozilla.org/show_bug.cgi?id=1521304
Bugzilla	1521214	Memory safety bugs fixed in Firefox 66, Firefox ESR 60.6, and Thunderbird 60.6	https://bugzilla.mozilla.org/show_bug.cgi?id=1521214
Bugzilla	1506665	Memory safety bugs fixed in Firefox 66, Firefox ESR 60.6, and Thunderbird 60.6	https://bugzilla.mozilla.org/show_bug.cgi?id=1506665
Bugzilla	1516834	Memory safety bugs fixed in Firefox 66, Firefox ESR 60.6, and Thunderbird 60.6	https://bugzilla.mozilla.org/show_bug.cgi?id=1516834
Bugzilla	1518774	Memory safety bugs fixed in Firefox 66, Firefox ESR 60.6, and Thunderbird 60.6	https://bugzilla.mozilla.org/show_bug.cgi?id=1518774
Bugzilla	1524755	Memory safety bugs fixed in Firefox 66, Firefox ESR 60.6, and Thunderbird 60.6	https://bugzilla.mozilla.org/show_bug.cgi?id=1524755
Bugzilla	1523362	Memory safety bugs fixed in Firefox 66, Firefox ESR 60.6, and Thunderbird 60.6	https://bugzilla.mozilla.org/show_bug.cgi?id=1523362
Bugzilla	1524214	Memory safety bugs fixed in Firefox 66, Firefox ESR 60.6, and Thunderbird 60.6	https://bugzilla.mozilla.org/show_bug.cgi?id=1524214
Bugzilla	1529203	Memory safety bugs fixed in Firefox 66, Firefox ESR 60.6, and Thunderbird 60.6	https://bugzilla.mozilla.org/show_bug.cgi?id=1529203
Bugzilla	1525145		https://bugzilla.mozilla.org/show_bug.cgi?id=1525145
Bugzilla	1530958		https://bugzilla.mozilla.org/show_bug.cgi?id=1530958
Bugzilla	1532599		https://bugzilla.mozilla.org/show_bug.cgi?id=1532599
Bugzilla	1528829		https://bugzilla.mozilla.org/show_bug.cgi?id=1528829
Bugzilla	1530103		https://bugzilla.mozilla.org/show_bug.cgi?id=1530103
Bugzilla	1514682		https://bugzilla.mozilla.org/show_bug.cgi?id=1514682
Bugzilla	1531277		https://bugzilla.mozilla.org/show_bug.cgi?id=1531277
Bugzilla	1527717		https://bugzilla.mozilla.org/show_bug.cgi?id=1527717

Type	Package URL	Namespace	Name / Product	Version	Distribution / Platform	Arch	Patch / Fix
Affected	pkg:mozilla/Thunderbird		Thunderbird	< 60.6
Fixed	pkg:mozilla/Thunderbird		Thunderbird	= 60.6

# CVE	Description	CVSS	EPSS	EPSS Trend (30 days)	Affected Products	Weaknesses	Security Advisories	Exploits	PoC	Pubblication Date	Modification Date
# CVE	Description	CVSS	EPSS	EPSS Trend (30 days)	Affected Products	Weaknesses	Security Advisories	PoC	Pubblication Date	Modification Date