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AUSCERT External Security Bulletin Redistribution
ESB-2020.3444
USN-4568-1: Brotli vulnerability
6 October 2020
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AusCERT Security Bulletin Summary
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Product: Brotli
Publisher: Ubuntu
Operating System: Ubuntu
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Reduced Security -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2020-8927
Original Bulletin:
https://usn.ubuntu.com/4568-1/
Comment: This advisory references vulnerabilities in products which run on
platforms other than Ubuntu. It is recommended that administrators
running Brotli check for an updated version of the software for
their operating system.
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USN-4568-1: Brotli vulnerability
05 October 2020
Brotli could be made to crash if it received a specially crafted
input.
Releases
o Ubuntu 20.04 LTS
o Ubuntu 18.04 LTS
o Ubuntu 16.04 LTS
Packages
o brotli - lossless compression algorithm and format (command line utility)
Details
It was discovered that Brotli incorrectly handled certain inputs.
An attacker could possibly use this issue to cause a crash.
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 20.04
o brotli - 1.0.7-6ubuntu0.1
o libbrotli1 - 1.0.7-6ubuntu0.1
o python3-brotli - 1.0.7-6ubuntu0.1
Ubuntu 18.04
o brotli - 1.0.3-1ubuntu1.3
o libbrotli1 - 1.0.3-1ubuntu1.3
o python-brotli - 1.0.3-1ubuntu1.3
o python3-brotli - 1.0.3-1ubuntu1.3
Ubuntu 16.04
o brotli - 1.0.3-1ubuntu1~16.04.2
o libbrotli1 - 1.0.3-1ubuntu1~16.04.2
o python-brotli - 1.0.3-1ubuntu1~16.04.2
o python3-brotli - 1.0.3-1ubuntu1~16.04.2
In general, a standard system update will make all the necessary changes.
References
o CVE-2020-8927
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