USN-3899-1: OpenSSL vulnerability

Releases

• Ubuntu 18.10
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM

Packages

• openssl - Secure Socket Layer (SSL) cryptographic library and tools
• openssl1.0 - Secure Socket Layer (SSL) cryptographic library and tools

Details

Juraj Somorovsky, Robert Merget, and Nimrod Aviram discovered that certain
applications incorrectly used OpenSSL and could be exposed to a padding
oracle attack. A remote attacker could possibly use this issue to decrypt
data.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 18.10

• libssl1.0.0 - 1.0.2n-1ubuntu6.2

Ubuntu 18.04

• libssl1.0.0 - 1.0.2n-1ubuntu5.3

Ubuntu 16.04

• libssl1.0.0 - 1.0.2g-1ubuntu4.15

After a standard system update you need to reboot your computer to make
all the necessary changes.

References

• CVE-2019-1559

Related notices

• USN-4376-2: libcrypto1.0.0-udeb, openssl, libssl1.0.0-udeb, libssl-dev, libssl-doc, libssl1.0.0