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Ubuntu 18.04 LTS USN-4108-1 Critical: Libzstd Arbitrary Code Execution

ubuntu
Calendar Grey August 21, 2019
Dist Ubuntu Esm H88
A significant alert regarding a vulnerability in Ubuntu's libzstd, which could enable remote attackers to execute arbitrary code via intricately constructed inputs.
Zstandard could be made to execute arbitrary code if it received specially crafted input.

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.

Topics%20covered

Topics Covered

security advisory software update Ubuntu arbitrary code input handling libzstd

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

Severity
critical
Lowest
Low
Medium
High
Critical

August 21, 2019

Topics%20covered

Topics Covered

security advisory software update Ubuntu arbitrary code input handling libzstd

Package Information

https://launchpad.net/ubuntu/+source/libzstd/1.3.3+dfsg-2ubuntu1.1

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