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Ubuntu 16.04 ESM USN-5328-2 Critical OpenSSL Denial Of Service

ubuntu
Calendar Grey March 15, 2022
Dist Ubuntu Esm H88
OpenSSL may become unresponsive when processing a specially designed certificate. Instructions for updating are available for Ubuntu users.
OpenSSL could be made to stop responding if it opened a specially crafted certificate.

Summary

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

certificate.

Software Description:

- 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.

Topics%20covered

Topics Covered

security advisory denial of service critical software update Ubuntu openssl certificate issue

Update Instructions

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

Ubuntu 16.04 ESM:
  libssl1.0.0                     1.0.2g-1ubuntu4.20+esm2

Ubuntu 14.04 ESM:
  libssl1.0.0                     1.0.1f-1ubuntu2.27+esm5

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

References

https://ubuntu.com/security/notices/USN-5328-2

https://ubuntu.com/security/notices/USN-5328-1

CVE-2022-0778

Severity
critical
Lowest
Low
Medium
High
Critical

March 15, 2022

Topics%20covered

Topics Covered

security advisory denial of service critical software update Ubuntu openssl certificate issue

Package Information

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