========================================================================== 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://usn.ubuntu.com/4108-1 CVE-2019-11922 Package Information: https://launchpad.net/ubuntu/+source/libzstd/1.3.3+dfsg-2ubuntu1.1
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