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[MFSA-2020-18] Security Vulnerabilities fixed in Thunderbird 68.8.0

Severity Critical
Affected Packages 1
Fixed Packages 1
CVEs 6
Info Packages References Vulnerabilities

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-2020-12387: Use-after-free during worker shutdown (critical)
    A race condition when running shutdown code for Web Worker led to a use-after-free vulnerability. This resulted in a potentially exploitable crash.

  • CVE-2020-12392: Arbitrary local file access with 'Copy as cURL' (moderate)
    The 'Copy as cURL' feature of Devtools' network tab did not properly escape the HTTP POST data 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 the disclosure of local files.

  • CVE-2020-12393: 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.
    Note: this issue only affects Firefox on Windows operating systems.

  • CVE-2020-12395: Memory safety bugs fixed in Thunderbird 68.8.0 (critical)
    Mozilla developers and community members Alexandru Michis, Jason Kratzer, philipp, Ted Campbell, Bas Schouten, André Bargull, and Karl Tomlinson reported memory safety bugs present in Firefox 75 and Firefox ESR 68.7. 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.

  • CVE-2020-12397: Sender Email Address Spoofing using encoded Unicode characters (low)
    By encoding Unicode whitespace characters within the From
    email header, an attacker can spoof the sender email address
    that Thunderbird displays.

  • CVE-2020-6831: Buffer overflow in SCTP chunk input validation (high)
    A buffer overflow could occur when parsing and validating SCTP chunks in WebRTC. This could have led to memory corruption and a potentially exploitable crash.

Package Affected Version
pkg:mozilla/Thunderbird < 68.8.0
Package Fixed Version
pkg:mozilla/Thunderbird = 68.8.0
ID
MFSA-2020-18
Severity
critical
URL
https://www.mozilla.org/en-US/security/advisories/mfsa2020-18
Published
2020-05-05T00:00:00
(4 years ago)
Modified
2020-05-05T00:00:00
(4 years ago)
Other Advisories
Source # ID Name URL
Bugzilla 1545345 https://bugzilla.mozilla.org/show_bug.cgi?id=1545345
Bugzilla 1614468 https://bugzilla.mozilla.org/show_bug.cgi?id=1614468
Bugzilla 1615471 https://bugzilla.mozilla.org/show_bug.cgi?id=1615471
Bugzilla 1595886 Memory safety bugs fixed in Thunderbird 68.8.0 https://bugzilla.mozilla.org/show_bug.cgi?id=1595886
Bugzilla 1611482 Memory safety bugs fixed in Thunderbird 68.8.0 https://bugzilla.mozilla.org/show_bug.cgi?id=1611482
Bugzilla 1614704 Memory safety bugs fixed in Thunderbird 68.8.0 https://bugzilla.mozilla.org/show_bug.cgi?id=1614704
Bugzilla 1624098 Memory safety bugs fixed in Thunderbird 68.8.0 https://bugzilla.mozilla.org/show_bug.cgi?id=1624098
Bugzilla 1625749 Memory safety bugs fixed in Thunderbird 68.8.0 https://bugzilla.mozilla.org/show_bug.cgi?id=1625749
Bugzilla 1626382 Memory safety bugs fixed in Thunderbird 68.8.0 https://bugzilla.mozilla.org/show_bug.cgi?id=1626382
Bugzilla 1628076 Memory safety bugs fixed in Thunderbird 68.8.0 https://bugzilla.mozilla.org/show_bug.cgi?id=1628076
Bugzilla 1631508 Memory safety bugs fixed in Thunderbird 68.8.0 https://bugzilla.mozilla.org/show_bug.cgi?id=1631508
Bugzilla 1617370 https://bugzilla.mozilla.org/show_bug.cgi?id=1617370
Bugzilla 1632241 https://bugzilla.mozilla.org/show_bug.cgi?id=1632241
Type Package URL Namespace Name / Product Version Distribution / Platform Arch Patch / Fix
Affected pkg:mozilla/Thunderbird Thunderbird < 68.8.0
Fixed pkg:mozilla/Thunderbird Thunderbird = 68.8.0
# 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