Important: thunderbird

Issue Overview:

The Mozilla Foundation Security Advisory describes this flaw as:

Due to confusion about ValueTags on JavaScript Objects, an object may pass through the type barrier, resulting in memory corruption and a potentially exploitable crash. (CVE-2020-12417)

The Mozilla Foundation Security Advisory describes this flaw as:

Manipulating individual parts of a URL object could have caused an out-of-bounds read, leaking process memory to malicious JavaScript. (CVE-2020-12418)

The Mozilla Foundation Security Advisory describes this flaw as:

When processing callbacks that occurred during window flushing in the parent process, the associated window may die; causing a use-after-free condition. This could have led to memory corruption and a potentially exploitable crash. (CVE-2020-12419)

The Mozilla Foundation Security Advisory describes this flaw as:

When trying to connect to a STUN server, a race condition could have caused a use-after-free of a pointer, leading to memory corruption and a potentially exploitable crash. (CVE-2020-12420)

The Mozilla Foundation Security Advisory describes this flaw as:

When performing add-on updates, certificate chains terminating in non-built-in-roots were rejected (even if they were legitimately added by an administrator.) This could have caused add-ons to become out-of-date silently without notification to the user. (CVE-2020-12421)

Affected Packages:

thunderbird

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

New Packages:

aarch64:  
    thunderbird-68.10.0-1.amzn2.aarch64  
    thunderbird-debuginfo-68.10.0-1.amzn2.aarch64  
  
src:  
    thunderbird-68.10.0-1.amzn2.src  
  
x86_64:  
    thunderbird-68.10.0-1.amzn2.x86_64  
    thunderbird-debuginfo-68.10.0-1.amzn2.x86_64  

Additional References

Red Hat: CVE-2020-12417, CVE-2020-12418, CVE-2020-12419, CVE-2020-12420, CVE-2020-12421

Mitre: CVE-2020-12417, CVE-2020-12418, CVE-2020-12419, CVE-2020-12420, CVE-2020-12421