=========================================================================Ubuntu Security Notice USN-4108-1
August 21, 2019
libzstd vulnerability
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 LTS
Summary:
Zstandard could be made to execute arbitrary code if it received
specially crafted input.
Software Description:
- libzstd: fast lossless compression algorithm -- development files
Details:
It was discovered that Zstandard incorrectly handled certain inputs.
An attacker could possibly use this issue to execute arbitrary code.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 18.04 LTS:
libzstd1 1.3.3+dfsg-2ubuntu1.1
zstd 1.3.3+dfsg-2ubuntu1.1
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-4108-1
CVE-2019-11922
Package Information:
https://launchpad.net/ubuntu/+source/libzstd/1.3.3+dfsg-2ubuntu1.1