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Ubuntu 23.10: 6563-1 Critical: Thunderbird DoS and Email Spoofs

ubuntu
Calendar Grey January 2, 2024
Dist Ubuntu Esm H88
Multiple security issues were fixed in Thunderbird, addressing critical email spoofing and DoS threats on Ubuntu systems.
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:

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,

obtain sensitive information, bypass security restrictions, cross-site

tracing, or execute arbitrary code.(CVE-2023-6857, CVE-2023-6858,

CVE-2023-6859, CVE-2023-6861, CVE-2023-6862, CVE-2023-6863, CVE-2023-6864)

Marcus Brinkmann discovered that Thunderbird did not properly parse a PGP/MIME

payload that contains digitally signed text. An attacker could potentially

exploit this issue to spoof an email message. (CVE-2023-50762)

Marcus Brinkmann discovered that Thunderbird did not properly compare the

signature creation date with the message date and time when using digitally

signed S/MIME email message. An attacker could pote...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical ubuntu thunderbird email exploit

Update Instructions

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

Ubuntu 23.10:
  thunderbird                     1:115.6.0+build2-0ubuntu0.23.10.1

Ubuntu 23.04:
  thunderbird                     1:115.6.0+build2-0ubuntu0.23.04.1

Ubuntu 22.04 LTS:
  thunderbird                     1:115.6.0+build2-0ubuntu0.22.04.1

Ubuntu 20.04 LTS:
  thunderbird                     1:115.6.0+build2-0ubuntu0.20.04.1

In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-6563-1

CVE-2023-50761, CVE-2023-50762, CVE-2023-6856, CVE-2023-6857,

CVE-2023-6858, CVE-2023-6859, CVE-2023-6860, CVE-2023-6861,

CVE-2023-6862, CVE-2023-6863, CVE-2023-6864

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-6563-1

Topics%20covered

Topics Covered

security advisory denial of service critical ubuntu thunderbird email exploit

Package Information

https://launchpad.net/ubuntu/+source/thunderbird/1:115.6.0+build2-0ubuntu0.23.10.1
https://launchpad.net/ubuntu/+source/thunderbird/1:115.6.0+build2-0ubuntu0.23.04.1
https://launchpad.net/ubuntu/+source/thunderbird/1:115.6.0+build2-0ubuntu0.22.04.1

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