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Ubuntu 16.04, 14.04: USN-4969-2 Critical isc-dhcp Denial Of Service

ubuntu
Calendar Grey May 27, 2021
Dist Ubuntu Esm H88
To address the isc-dhcp vulnerability in Ubuntu 14.04 and 16.04, follow these steps to secure your system and prevent denial of service risks
DHCP could be made to crash if it received specially crafted network traffic.

Summary

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu update instructions network issue isc-dhcp

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 ESM: isc-dhcp-client 4.3.3-5ubuntu12.10+esm1 isc-dhcp-server 4.3.3-5ubuntu12.10+esm1 Ubuntu 14.04 ESM: isc-dhcp-client 4.2.4-7ubuntu12.13+esm1 isc-dhcp-server 4.2.4-7ubuntu12.13+esm1 In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-4969-2

https://ubuntu.com/security/notices/USN-4969-1

CVE-2021-25217

Severity
critical
Lowest
Low
Medium
High
Critical

May 27, 2021

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu update instructions network issue isc-dhcp

Package Information

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