USN-6663-2: OpenSSL update
Publication date
13 March 2024
Overview
Add implicit rejection in PKCS#1 v1.5 in OpenSSL.
Releases
Packages
- 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.
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.
Update instructions
After a standard system update you need to reboot your computer to make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 16.04 xenial | libssl-doc – 1.0.2g-1ubuntu4.20+esm12 | ||
| libssl1.0.0 – 1.0.2g-1ubuntu4.20+esm12 | |||
| openssl – 1.0.2g-1ubuntu4.20+esm12 | |||
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