Ubuntu Security Notice USN-5051-2
August 26, 2021
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 16.04 ESM
– Ubuntu 14.04 ESM
OpenSSL could be made to crash or expose sensitive information
if it received a specially crafted ASN.1 string.
– openssl: Secure Socket Layer (SSL) cryptographic library and tools
USN-5051-1 fixed a vulnerability in OpenSSL. This update provides
the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.
Original advisory details:
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.
The problem can be corrected by updating your system to the following
Ubuntu 16.04 ESM:
Ubuntu 14.04 ESM:
After a standard system update you need to reboot your computer to make
all the necessary changes.