[USN-5051-3] OpenSSL vulnerability

========================================================================== Ubuntu Security Notice USN-5051-3 August 26, 2021
openssl1.0 vulnerability ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 18.04 LTS
Summary:
OpenSSL could be made to crash or expose sensitive information if it received a specially crafted ASN.1 string.
Software Description: – openssl1.0: Secure Socket Layer (SSL) cryptographic library and tools
Details:
USN-5051-1 fixed a vulnerability in OpenSSL. This update provides the corresponding update for the openssl1.0 package in Ubuntu 18.04 LTS.
Original advisory details:
Ingo Schwarze discovered that OpenSSL incorrectly handled certain ASN.1 strings. A remote attacker could use this issue to cause OpenSSL to crash, resulting in a denial of service, or possibly obtain sensitive information. (CVE-2021-3712)
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-1ubuntu5.7
After a standard system update you need to reboot your computer to make all the necessary changes.
References: ubuntu.com/security/notices/USN-5051-3 ubuntu.com/security/notices/USN-5051-1 CVE-2021-3712
Package Information: launchpad.net/ubuntu/+source/openssl1.0/1.0.2n-1ubuntu5.7