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Ubuntu 16.04 ESM USN-5845-2 Critical: OpenSSL Denial Of Service Issues

ubuntu
Calendar Grey February 7, 2023
Dist Ubuntu Esm H88
Multiple OpenSSL security flaws have been resolved in Ubuntu 14.04 and 16.04 ESM to avert denial of service and remote code execution threats.
Several security issues were fixed in OpenSSL.

Summary

Several security issues were fixed in OpenSSL.

Software Description:

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

Details:

USN-5845-1 fixed several vulnerabilities in OpenSSL. This update provides

the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.

Original advisory details:

David Benjamin discovered that OpenSSL incorrectly handled X.400 address

processing. A remote attacker could possibly use this issue to read

arbitrary memory contents or cause OpenSSL to crash, resulting in a denial

of service. (CVE-2023-0286)

Octavio Galland and Marcel Böhme discovered that OpenSSL incorrectly

handled streaming ASN.1 data. A remote attacker could use this issue to

cause OpenSSL to crash, resulting in a denial of service, or possibly

execute arbitrary code. (CVE-2023-0215)

Topics%20covered

Topics Covered

security advisory denial of service security issue OpenSSL Ubuntu 16.04 Ubuntu 14.04

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+esm6

Ubuntu 14.04 ESM:
  libssl1.0.0                     1.0.1f-1ubuntu2.27+esm6

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

References

https://ubuntu.com/security/notices/USN-5845-2

https://ubuntu.com/security/notices/USN-5845-1

CVE-2023-0215, CVE-2023-0286

Severity
critical
Lowest
Low
Medium
High
Critical

February 07, 2023

Topics%20covered

Topics Covered

security advisory denial of service security issue OpenSSL Ubuntu 16.04 Ubuntu 14.04

Package Information

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