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💡 Newskategorie: Unix Server
🔗 Quelle: ubuntu.com
Ubuntu Security Notice USN-2868-1
13th January, 2016
isc-dhcp vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 15.10
- Ubuntu 15.04
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
Summary
DHCP server, client, or relay could be made to crash if they received specially crafted network traffic.
Software description
- isc-dhcp - DHCP server and client
Details
Sebastian Poehn discovered that the DHCP server, client, and relay
incorrectly handled certain malformed UDP packets. A remote attacker could
use this issue to cause the DHCP server, client, or relay to stop
responding, resulting in a denial of service.
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 15.10:
- isc-dhcp-server 4.3.1-5ubuntu3.1
- isc-dhcp-relay 4.3.1-5ubuntu3.1
- isc-dhcp-client 4.3.1-5ubuntu3.1
- isc-dhcp-server-ldap 4.3.1-5ubuntu3.1
- Ubuntu 15.04:
- isc-dhcp-server 4.3.1-5ubuntu2.3
- isc-dhcp-relay 4.3.1-5ubuntu2.3
- isc-dhcp-client 4.3.1-5ubuntu2.3
- isc-dhcp-server-ldap 4.3.1-5ubuntu2.3
- Ubuntu 14.04 LTS:
- isc-dhcp-server 4.2.4-7ubuntu12.4
- isc-dhcp-relay 4.2.4-7ubuntu12.4
- isc-dhcp-client 4.2.4-7ubuntu12.4
- isc-dhcp-server-ldap 4.2.4-7ubuntu12.4
- Ubuntu 12.04 LTS:
- isc-dhcp-server 4.1.ESV-R4-0ubuntu5.10
- isc-dhcp-relay 4.1.ESV-R4-0ubuntu5.10
- isc-dhcp-client 4.1.ESV-R4-0ubuntu5.10
- isc-dhcp-server-ldap 4.1.ESV-R4-0ubuntu5.10
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.