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AUSCERT External Security Bulletin Redistribution
USN-4662-1: OpenSSL vulnerability
9 December 2020
AusCERT Security Bulletin Summary
Operating System: Ubuntu
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Denial of Service -- Remote/Unauthenticated
CVE Names: CVE-2020-1971
Comment: This advisory references vulnerabilities in products which run on
platforms other than Ubuntu. It is recommended that administrators
running OpenSSL check for an updated version of the software for
their operating system.
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USN-4662-1: OpenSSL vulnerability
08 December 2020
OpenSSL could be made to crash if it processed specially crafted input.
o Ubuntu 20.10
o Ubuntu 20.04 LTS
o Ubuntu 18.04 LTS
o Ubuntu 16.04 LTS
o openssl - Secure Socket Layer (SSL) cryptographic library and tools
o openssl1.0 - Secure Socket Layer (SSL) cryptographic library and tools
David Benjamin discovered that OpenSSL incorrectly handled comparing
certificates containing a EDIPartyName name type. A remote attacker could
possibly use this issue to cause OpenSSL to crash, resulting in a denial of
The problem can be corrected by updating your system to the following package
o libssl1.1 - 1.1.1f-1ubuntu4.1
o libssl1.1 - 1.1.1f-1ubuntu2.1
o libssl1.0.0 - 1.0.2n-1ubuntu5.5
o libssl1.1 - 1.1.1-1ubuntu2.1~18.04.7
o libssl1.0.0 - 1.0.2g-1ubuntu4.18
After a standard system update you need to reboot your computer to make all
the necessary changes.
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