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Ubuntu 16.04 ESM: USN-5700-1 Important: openssl Denial Of Service

ubuntu
Calendar Grey November 7, 2022
Dist Ubuntu Esm H88
Update released for isc-dhcp vulnerabilities impacting Ubuntu 16.04 ESM, addressing DoS risks and providing detailed installation steps. Learn more!
Several security issues were fixed in DHCP.

Summary

Several security issues were fixed in DHCP.

Software Description:

- isc-dhcp: DHCP server and client

Details:

USN-5658-1 fixed vulnerabilities in DHCP. This update provides

the corresponding updates for Ubuntu 16.04 ESM.

Original advisory details:

It was discovered that DHCP incorrectly handled option reference

counting. A remote attacker could possibly use this issue to cause DHCP

servers to crash, resulting in a denial of service. (CVE-2022-2928)

It was discovered that DHCP incorrectly handled certain memory

operations. A remote attacker could possibly use this issue to cause

DHCP clients and servers to consume resources, leading to a denial of

service. (CVE-2022-2929)

Topics%20covered

Topics Covered

security advisory moderate denial of service patch ubuntu networking 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+esm2
   isc-dhcp-server                 4.3.3-5ubuntu12.10+esm2

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

References

https://ubuntu.com/security/notices/USN-5658-1

CVE-2022-2928, CVE-2022-2929

Severity
important
Lowest
Low
Medium
High
Critical

November 07, 2022

Topics%20covered

Topics Covered

security advisory moderate denial of service patch ubuntu networking issue isc-dhcp

Package Information

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