[USN-4530-1] Debian-LAN vulnerabilities

Avital Ostromich avital.ostromich at canonical.com
Tue Sep 22 18:05:53 UTC 2020

Ubuntu Security Notice USN-4530-1
September 22, 2020

debian-lan-config vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.04 LTS


Debian-LAN could be made to change Kerberos user passwords or run programs
as an administrator.

Software Description:
- debian-lan-config: FAI config space for the Debian-LAN system


Wolfgang Schweer discovered that Debian-LAN did not properly handle ACLs
for the Kerberos admin server. A local attacker could possibly use this
issue to change the passwords of other users, leading to root privilege
escalation. (CVE-2019-3467)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 18.04 LTS:
  debian-lan-config               0.23+deb9u1build0.18.04.1

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


Package Information:

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