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AUSCERT External Security Bulletin Redistribution
ESB-2019.4478.2
USN-4202-1: Thunderbird vulnerabilities
11 December 2019
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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
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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
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