USN-6048-1: ZenLib vulnerability

Releases

• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM

Packages

• libzen - ZenLib C++ utility library -- development files

Details

It was discovered that ZenLib doesn't check the return value of a specific
operation before using it. An attacker could use a specially crafted input
to crash programs using the library.

Update instructions

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

Ubuntu 20.04

• libzen-dev - 0.4.37-1ubuntu0.20.04.1
• libzen0v5 - 0.4.37-1ubuntu0.20.04.1

Ubuntu 18.04

• libzen-dev - 0.4.37-1ubuntu0.18.04.1
• libzen0v5 - 0.4.37-1ubuntu0.18.04.1

Ubuntu 16.04

• libzen-dev - 0.4.32-1ubuntu0.16.04.1+esm1
  Available with Ubuntu Pro
• libzen0v5 - 0.4.32-1ubuntu0.16.04.1+esm1
  Available with Ubuntu Pro

Ubuntu 14.04

• libzen-dev - 0.4.29-1ubuntu0.1~esm1
  Available with Ubuntu Pro
• libzen0 - 0.4.29-1ubuntu0.1~esm1
  Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References

• CVE-2020-36646