Ubuntu Security Notice USN-5845-2
February 07, 2023
openssl vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 16.04 ESM
– Ubuntu 14.04 ESM
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)
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
