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[MFSA-2021-42] Security Vulnerabilities fixed in Thunderbird 78.14

Severity Moderate
Affected Packages 1
Fixed Packages 1
CVEs 2
Info Packages References Vulnerabilities
  • CVE-2021-38492: Navigating to "mk:" URL scheme could load Internet Explorer (moderate) When delegating navigations to the operating system, Thunderbird would accept the mk scheme which might allow attackers to launch pages and execute scripts in Internet Explorer in unprivileged mode.

This bug only affects Thunderbird for Windows. Other operating systems are unaffected.

  • CVE-2021-38493: Memory safety bugs fixed in Thunderbird 78.14 and Thunderbird 91.1 (high) Mozilla developers Tyson Smith and Gabriele Svelto reported memory safety bugs present in Thunderbird 78.13. 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 < 78.14
Package Fixed Version
pkg:mozilla/Thunderbird = 78.14
ID
MFSA-2021-42
Severity
moderate
URL
https://www.mozilla.org/en-US/security/advisories/mfsa2021-42
Published
2021-09-07T00:00:00
(3 years ago)
Modified
2021-09-07T00:00:00
(3 years ago)
Other Advisories
Source # ID Name URL
Bugzilla 1721107 https://bugzilla.mozilla.org/show_bug.cgi?id=1721107
Bugzilla 1723391 Memory safety bugs fixed in Thunderbird 78.14 and Thunderbird 91.1 https://bugzilla.mozilla.org/show_bug.cgi?id=1723391
Bugzilla 1724101 Memory safety bugs fixed in Thunderbird 78.14 and Thunderbird 91.1 https://bugzilla.mozilla.org/show_bug.cgi?id=1724101
Bugzilla 1724107 Memory safety bugs fixed in Thunderbird 78.14 and Thunderbird 91.1 https://bugzilla.mozilla.org/show_bug.cgi?id=1724107
Type Package URL Namespace Name / Product Version Distribution / Platform Arch Patch / Fix
Affected pkg:mozilla/Thunderbird Thunderbird < 78.14
Fixed pkg:mozilla/Thunderbird Thunderbird = 78.14
# 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