1. Ubuntu Security Notices
  2. USN-4662-1

USN-4662-1: OpenSSL vulnerability

Publication date

8 December 2020

Overview

OpenSSL could be made to crash if it processed specially crafted input.

Releases

Packages

  • openssl - Secure Socket Layer (SSL) cryptographic library and tools
  • openssl1.0 - Secure Socket Layer (SSL) cryptographic library and tools

Details

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
service.

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
service.

Update instructions

After a standard system update you need to reboot your computer to make all the necessary changes.

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
20.10 groovy libssl1.1 –  1.1.1f-1ubuntu4.1
20.04 focal libssl1.1 –  1.1.1f-1ubuntu2.1
18.04 bionic libssl1.0.0 –  1.0.2n-1ubuntu5.5
libssl1.1 –  1.1.1-1ubuntu2.1~18.04.7
16.04 xenial libssl1.0.0 –  1.0.2g-1ubuntu4.18

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References

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