Operating System:

[Ubuntu]

Published:

11 December 2019

Protect yourself against future threats.

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             AUSCERT External Security Bulletin Redistribution

                              ESB-2019.4478.2
                  USN-4202-1: Thunderbird vulnerabilities
                             11 December 2019

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Thunderbird
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Cross-site Scripting            -- Remote with User Interaction
                   Denial of Service               -- Remote with User Interaction
                   Provide Misleading Information  -- Remote with User Interaction
                   Reduced Security                -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-15903 CVE-2019-11764 CVE-2019-11763
                   CVE-2019-11762 CVE-2019-11761 CVE-2019-11760
                   CVE-2019-11759 CVE-2019-11758 CVE-2019-11757
                   CVE-2019-11755  

Reference:         ASB-2019.0309
                   ESB-2019.3640
                   ESB-2019.3399

Original Bulletin: 
   https://usn.ubuntu.com/4202-1/
   https://usn.ubuntu.com/4202-2/

Comment: This bulletin contains two (2) Ubuntu security advisories.

Revision History:  December 11 2019: Added USN-4202-2: Thunderbird regression
                   November 27 2019: Initial Release

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USN-4202-1: Thunderbird vulnerabilities
26 November 2019

thunderbird vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:

  o Ubuntu 19.10
  o Ubuntu 18.04 LTS

Summary

Several security issues were fixed in Thunderbird.

Software Description

  o thunderbird - Mozilla Open Source mail and newsgroup client

Details

It was discovered that a specially crafted S/MIME message with an inner
encryption layer could be displayed as having a valid signature in some
circumstances, even if the signer had no access to the encrypted message. An
attacker could potentially exploit this to spoof the message author.
(CVE-2019-11755)

Multiple security issues were discovered in Thunderbird. If a user were tricked
in to opening a specially crafted website in a browsing context, an attacker
could potentially exploit these to cause a denial of service, bypass security
restrictions, bypass same-origin restrictions, conduct cross-site scripting
(XSS) attacks, or execute arbitrary code. (CVE-2019-11757, CVE-2019-11758,
CVE-2019-11759, CVE-2019-11760, CVE-2019-11761, CVE-2019-11762, CVE-2019-11763,
CVE-2019-11764)

A heap overflow was discovered in the expat library in Thunderbird. If a user
were tricked in to opening a specially crafted message, an attacker could
potentially exploit this to cause a denial of service, or execute arbitrary
code. (CVE-2019-15903)

Update instructions

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

Ubuntu 19.10
    thunderbird - 1:68.2.1+build1-0ubuntu0.19.10.1
Ubuntu 18.04 LTS
    thunderbird - 1:68.2.1+build1-0ubuntu0.18.04.1

To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .

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

References

  o CVE-2019-11755
  o CVE-2019-11757
  o CVE-2019-11758
  o CVE-2019-11759
  o CVE-2019-11760
  o CVE-2019-11761
  o CVE-2019-11762
  o CVE-2019-11763
  o CVE-2019-11764
  o CVE-2019-15903

================================================================================

USN-4202-2: Thunderbird regression
10 December 2019

thunderbird regression
A security issue affects these releases of Ubuntu and its derivatives:

  o Ubuntu 19.10
  o Ubuntu 18.04 LTS

Summary

USN-4202-1 caused a regression in Thunderbird.

Software Description

  o thunderbird - Mozilla Open Source mail and newsgroup client

Details

USN-4202-1 fixed vulnerabilities in Thunderbird. After upgrading, Thunderbird
created a new profile for some users. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

It was discovered that a specially crafted S/MIME message with an inner
encryption layer could be displayed as having a valid signature in some
circumstances, even if the signer had no access to the encrypted message. An
attacker could potentially exploit this to spoof the message author.
(CVE-2019-11755)

Multiple security issues were discovered in Thunderbird. If a user were tricked
in to opening a specially crafted website in a browsing context, an attacker
could potentially exploit these to cause a denial of service, bypass security
restrictions, bypass same-origin restrictions, conduct cross-site scripting
(XSS) attacks, or execute arbitrary code. (CVE-2019-11757, CVE-2019-11758,
CVE-2019-11759, CVE-2019-11760, CVE-2019-11761, CVE-2019-11762, CVE-2019-11763,
CVE-2019-11764)

A heap overflow was discovered in the expat library in Thunderbird. If a user
were tricked in to opening a specially crafted message, an attacker could
potentially exploit this to cause a denial of service, or execute arbitrary
code. (CVE-2019-15903)

Update instructions

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

Ubuntu 19.10
    thunderbird - 1:68.2.2+build1-0ubuntu0.19.10.1
Ubuntu 18.04 LTS
    thunderbird - 1:68.2.2+build1-0ubuntu0.18.04.1

To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .

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

References

  o USN-4202-1
  o LP: 1854150

- --------------------------END INCLUDED TEXT--------------------

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