Ubuntu 16.04 LTS USN-6663-2: OpenSSL Security Update Overview
ubuntu
March 13, 2024
Add implicit rejection in PKCS#1 v1.5 in OpenSSL.
Summary
A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 16.04 LTS (Available with Ubuntu Pro) Summary: Add implicit rejection in PKCS#1 v1.5 in OpenSSL. Software Description: - openssl: Secure Socket Layer (SSL) cryptographic library and tools Details: USN-6663-1 provided a security update for OpenSSL. This update provides the corresponding update for Ubuntu 16.04 LTS. Original advisory details: As a security improvement, this update prevents OpenSSL from returning an error when detecting wrong padding in PKCS#1 v1.5 RSA, to prevent its use in possible Bleichenbacher timing attacks.
Topics Covered
Update Instructions
The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 LTS (Available with Ubuntu Pro): libssl-doc 1.0.2g-1ubuntu4.20+esm12 libssl1.0.0 1.0.2g-1ubuntu4.20+esm12 openssl 1.0.2g-1ubuntu4.20+esm12 After a standard system update you need to reboot your computer to make all the necessary changes.
References
https://ubuntu.com/security/notices/USN-6663-1
https://bugs.launchpad.net/ubuntu/+source/openssl/+bug/2054090
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Ubuntu Security Notice USN-6663-2
Topics Covered
Package Information
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