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Alerts This Week
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Ubuntu 18.04 LTS USN-5845-1 Critical: OpenSSL Denial Of Service

ubuntu
Calendar Grey February 7, 2023
Dist Ubuntu Esm H88
Key vulnerabilities in OpenSSL resolved in Ubuntu 18.04 LTS. Discover ways to enhance your system's security now.
Several security issues were fixed in OpenSSL.

Summary

Several security issues were fixed in OpenSSL.

Software Description:

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

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 critical ubuntu openssl service issue

Update Instructions

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

Ubuntu 18.04 LTS:
   libssl1.0.0                     1.0.2n-1ubuntu5.11

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

References

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

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 critical ubuntu openssl service issue

Package Information

https://launchpad.net/ubuntu/+source/openssl1.0/1.0.2n-1ubuntu5.11

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