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[MFSA-2020-44] Security Vulnerabilities fixed in Thunderbird 78.3

Severity Moderate
Affected Packages 1
Fixed Packages 1
CVEs 4
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-2020-15673: Memory safety bugs fixed in Thunderbird 78.3 (high)
    Mozilla developer Jason Kratzer reported memory safety bugs present in Thunderbird 78.2. 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-2020-15676: XSS when pasting attacker-controlled data into a contenteditable element (moderate)
    Thunderbird sometimes ran the onload handler for SVG elements that the DOM sanitizer decided to remove, resulting in JavaScript being executed after pasting attacker-controlled data into a contenteditable element.

  • CVE-2020-15677: Download origin spoofing via redirect (moderate)
    By exploiting an Open Redirect vulnerability on a website, an attacker could have spoofed the site displayed in the download file dialog to show the original site (the one suffering from the open redirect) rather than the site the file was actually downloaded from.

  • CVE-2020-15678: When recursing through layers while scrolling, an iterator may have become invalid, resulting in a potential use-after-free scenario (moderate)
    When recursing through graphical layers while scrolling, an iterator may have become invalid, resulting in a potential use-after-free. This occurs because the function <code>APZCTreeManager::ComputeClippedCompositionBounds</code> did not follow iterator invalidation rules.

Package Affected Version
pkg:mozilla/Thunderbird < 78.3
Package Fixed Version
pkg:mozilla/Thunderbird = 78.3
ID
MFSA-2020-44
Severity
moderate
URL
https://www.mozilla.org/en-US/security/advisories/mfsa2020-44
Published
2020-09-22T00:00:00
(4 years ago)
Modified
2020-09-22T00:00:00
(4 years ago)
Other Advisories
Source # ID Name URL
Bugzilla 1648493 Memory safety bugs fixed in Thunderbird 78.3 https://bugzilla.mozilla.org/show_bug.cgi?id=1648493
Bugzilla 1660800 Memory safety bugs fixed in Thunderbird 78.3 https://bugzilla.mozilla.org/show_bug.cgi?id=1660800
Bugzilla 1646140 https://bugzilla.mozilla.org/show_bug.cgi?id=1646140
Bugzilla 1641487 https://bugzilla.mozilla.org/show_bug.cgi?id=1641487
Bugzilla 1660211 https://bugzilla.mozilla.org/show_bug.cgi?id=1660211
Type Package URL Namespace Name / Product Version Distribution / Platform Arch Patch / Fix
Affected pkg:mozilla/Thunderbird Thunderbird < 78.3
Fixed pkg:mozilla/Thunderbird Thunderbird = 78.3
# 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