Critical: thunderbird

Issue Overview:

The Mozilla Foundation Security Advisory describes this flaw as:
Mozilla developer reported memory safety bugs present in Firefox 80 and Firefox ESR 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-2020-15673)

The Mozilla Foundation Security Advisory describes this flaw as:
Firefox 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-2020-15676)

The Mozilla Foundation Security Advisory describes this flaw as:
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-2020-15677)

The Mozilla Foundation Security Advisory describes this flaw as:
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 APZCTreeManager::ComputeClippedCompositionBounds did not follow iterator invalidation rules. (CVE-2020-15678)

Mozilla developers and community members reported memory safety bugs present in Firefox 81 and Firefox ESR 78.3. 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. This vulnerability affects Firefox ESR < 78.4, Firefox < 82, and Thunderbird < 78.4. (CVE-2020-15683)

Use after free in WebRTC in Google Chrome prior to 86.0.4240.75 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (CVE-2020-15969)

In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. (CVE-2020-26950)

Affected Packages:

thunderbird

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

Issue Correction:
Run yum update thunderbird to update your system.

New Packages:

aarch64:  
    thunderbird-78.4.3-1.amzn2.0.1.aarch64  
    thunderbird-debuginfo-78.4.3-1.amzn2.0.1.aarch64  
  
src:  
    thunderbird-78.4.3-1.amzn2.0.1.src  
  
x86_64:  
    thunderbird-78.4.3-1.amzn2.0.1.x86_64  
    thunderbird-debuginfo-78.4.3-1.amzn2.0.1.x86_64  

Additional References

Red Hat: CVE-2020-15673, CVE-2020-15676, CVE-2020-15677, CVE-2020-15678, CVE-2020-15683, CVE-2020-15969, CVE-2020-26950

Mitre: CVE-2020-15673, CVE-2020-15676, CVE-2020-15677, CVE-2020-15678, CVE-2020-15683, CVE-2020-15969, CVE-2020-26950