[MFSA-2020-10] Security Vulnerabilities fixed in Thunderbird 68.6

Severity High
Affected Packages 1
Fixed Packages 1
CVEs 7

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-2019-20503: Out of bounds reads in sctp_load_addresses_from_init (moderate)
    The inputs to <code>sctp_load_addresses_from_init</code> are verified by <code>sctp_arethere_unrecognized_parameters</code>; however, the two functions handled parameter bounds differently, resulting in out of bounds reads when parameters are partially outside a chunk.

  • CVE-2020-6805: Use-after-free when removing data about origins (high)
    When removing data about an origin whose tab was recently closed, a use-after-free could occur in the Quota manager, resulting in a potentially exploitable crash.

  • CVE-2020-6806: BodyStream::OnInputStreamReady was missing protections against state confusion (high)
    By carefully crafting promise resolutions, it was possible to cause an out-of-bounds read off the end of an array resized during script execution. This could have led to memory corruption and a potentially exploitable crash.

  • CVE-2020-6807: Use-after-free in cubeb during stream destruction (high)
    When a device was changed while a stream was about to be destroyed, the <code>stream-reinit</code> task may have been executed after the stream was destroyed, causing a use-after-free and a potentially exploitable crash.

  • CVE-2020-6811: Devtools' 'Copy as cURL' feature did not fully escape website-controlled data, potentially leading to command injection (moderate)
    The 'Copy as cURL' feature of Devtools' network tab did not properly escape the HTTP method of a request, which can be controlled by the website. If a user used the 'Copy as Curl' feature and pasted the command into a terminal, it could have resulted in command injection and arbitrary command execution.

  • CVE-2020-6812: The names of AirPods with personally identifiable information were exposed to websites with camera or microphone permission (moderate)
    The first time AirPods are connected to an iPhone, they become named after the user's name by default (e.g. Jane Doe's AirPods.) Websites with camera or microphone permission are able to enumerate device names, disclosing the user's name. To resolve this issue, Firefox added a special case that renames devices containing the substring 'AirPods' to simply 'AirPods'.

  • CVE-2020-6814: Memory safety bugs fixed in Thunderbird 68.6 (high)
    Mozilla developers Byron Campen, Jason Kratzer, and Christian Holler reported memory safety bugs present in Thunderbird 68.5. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code.

Package Affected Version
pkg:mozilla/Thunderbird < 68.6
Package Fixed Version
pkg:mozilla/Thunderbird = 68.6
Source # ID Name URL
Bugzilla 1613765 https://bugzilla.mozilla.org/show_bug.cgi?id=1613765
Bugzilla 1610880 https://bugzilla.mozilla.org/show_bug.cgi?id=1610880
Bugzilla 1612308 https://bugzilla.mozilla.org/show_bug.cgi?id=1612308
Bugzilla 1614971 https://bugzilla.mozilla.org/show_bug.cgi?id=1614971
Bugzilla 1607742 https://bugzilla.mozilla.org/show_bug.cgi?id=1607742
Bugzilla 1616661 https://bugzilla.mozilla.org/show_bug.cgi?id=1616661
Bugzilla 1592078 Memory safety bugs fixed in Thunderbird 68.6 https://bugzilla.mozilla.org/show_bug.cgi?id=1592078
Bugzilla 1604847 Memory safety bugs fixed in Thunderbird 68.6 https://bugzilla.mozilla.org/show_bug.cgi?id=1604847
Bugzilla 1608256 Memory safety bugs fixed in Thunderbird 68.6 https://bugzilla.mozilla.org/show_bug.cgi?id=1608256
Bugzilla 1612636 Memory safety bugs fixed in Thunderbird 68.6 https://bugzilla.mozilla.org/show_bug.cgi?id=1612636
Bugzilla 1614339 Memory safety bugs fixed in Thunderbird 68.6 https://bugzilla.mozilla.org/show_bug.cgi?id=1614339
Type Package URL Namespace Name / Product Version Distribution / Platform Arch Patch / Fix
Affected pkg:mozilla/Thunderbird Thunderbird < 68.6
Fixed pkg:mozilla/Thunderbird Thunderbird = 68.6
# 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
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