package sudo 1.8.5p2-1ubuntu1.1 failed to install/upgrade: ErrorMessage: EOF on stdin at conffile prompt

Error detected in the upgrade of Ubuntu server 12.04 to 12.10

ProblemType: Package
DistroRelease: Ubuntu 12.10
Package: sudo 1.8.5p2-1ubuntu1.1
ProcVersionSignature: Ubuntu 3.8.0-29.42~precise1-generic 3.8.13.5
Uname: Linux 3.8.0-29-generic x86_64
ApportVersion: 2.6.1-0ubuntu12
Architecture: amd64
Date: Wed Sep 25 22:39:02 2013
DuplicateSignature: package:sudo:1.8.5p2-1ubuntu1.1:ErrorMessage: EOF on stdin at conffile prompt
ErrorMessage: ErrorMessage: EOF on stdin at conffile prompt
InstallationDate: Installed on 2013-09-13 (12 days ago)
InstallationMedia: Ubuntu-Server 12.04.3 LTS "Precise Pangolin" - Release amd64 (20130820.2)
MarkForUpload: True
SourcePackage: sudo
Title: package sudo 1.8.5p2-1ubuntu1.1 failed to install/upgrade: ErrorMessage: EOF on stdin at conffile prompt
UpgradeStatus: Upgraded to quantal on 2013-09-26 (0 days ago)
modified.conffile..etc.sudoers: [modified]
mtime.conffile..etc.sudoers: 2013-09-15T02:52:14.930022