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USN-5328-2: OpenSSL vulnerability

15 March 2022

OpenSSL could be made to stop responding if it opened a specially crafted certificate.

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Releases

Packages

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

Details

USN-5328-1 fixed a vulnerability in OpenSSL. This update provides
the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.

Original advisory details:

Tavis Ormandy discovered that OpenSSL incorrectly parsed certain
certificates. A remote attacker could possibly use this issue to cause
OpenSSH to stop responding, resulting in a denial of service.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 16.04
Ubuntu 14.04

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

References

Related notices

  • USN-5328-1: libssl1.0-dev, libssl1.1, libssl1.0.0, openssl1.0, libssl-dev, libssl-doc, openssl