[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
Summary:
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
Details:
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.
References:
https://usn.ubuntu.com/4530-1
CVE-2019-3467
Package Information:
https://launchpad.net/ubuntu/+source/debian-lan-config/0.23+deb9u1build0.18.04.1
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