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Ubuntu 21.04, 20.04 LTS, 18.04 LTS: USN-5058-1 Moderate: Thunderbird Issues

ubuntu
Calendar Grey August 31, 2021
Dist Ubuntu Esm H88
Uncover essential flaws in Thunderbird on Ubuntu. Update information available to maintain safe email interactions.
Several security issues were fixed in Thunderbird.

Summary

Several security issues were fixed in Thunderbird.

Software Description:

- thunderbird: Mozilla Open Source mail and newsgroup client

Details:

It was discovered that Thunderbird didn't ignore IMAP server responses

prior to completion of the STARTTLS handshake. A person-in-the-middle

could potentially exploit this to trick Thunderbird into showing incorrect

information. (CVE-2021-29969)

Multiple security issues were discovered in Thunderbird. If a user were

tricked into opening a specially crafted website in a browsing context, an

attacker could potentially exploit these to cause a denial of service, or

execute arbitrary code. (CVE-2021-29970, CVE-2021-29976, CVE-2021-29980,

CVE-2021-29984, CVE-2021-29985, CVE-2021-29986, CVE-2021-29988,

CVE-2021-29989, CVE-2021-30547)

Topics%20covered

Topics Covered

security advisory moderate denial of service security issue remote code execution Ubuntu Thunderbird

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 21.04:
  thunderbird                     1:78.13.0+build1-0ubuntu0.21.04.2

Ubuntu 20.04 LTS:
  thunderbird                     1:78.13.0+build1-0ubuntu0.20.04.2

Ubuntu 18.04 LTS:
  thunderbird                     1:78.13.0+build1-0ubuntu0.18.04.1

After a standard system update you need to restart Thunderbird to make
all the necessary changes.

References

https://ubuntu.com/security/notices/USN-5058-1

CVE-2021-29969, CVE-2021-29970, CVE-2021-29976, CVE-2021-29980,

CVE-2021-29984, CVE-2021-29985, CVE-2021-29986, CVE-2021-29988,

CVE-2021-29989, CVE-2021-30547

Severity
important
Lowest
Low
Medium
High
Critical

August 31, 2021

Topics%20covered

Topics Covered

security advisory moderate denial of service security issue remote code execution Ubuntu Thunderbird

Package Information

https://launchpad.net/ubuntu/+source/thunderbird/1:78.13.0+build1-0ubuntu0.21.04.2
https://launchpad.net/ubuntu/+source/thunderbird/1:78.13.0+build1-0ubuntu0.20.04.2
https://launchpad.net/ubuntu/+source/thunderbird/1:78.13.0+build1-0ubuntu0.18.04.1

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