Package: rkhunter Version: 1.4.2-3 Followup-For: Bug #791486 It's not actually the version check, it is how the verison is extracted by the program. Looking in the logs:
[08:06:10] Info: This version : Binary file /var/lib/rkhunter/db/i18n/zh matches [08:06:10] Info: Latest version: 2009091601 That looks like a grep message, grep is unhappy :( # grep 'Version:' /var/lib/rkhunter/db/i18n/zh Binary file /var/lib/rkhunter/db/i18n/zh matches # LANG=C grep 'Version:' /var/lib/rkhunter/db/i18n/zh Version:2009091601 I'm not sure where GREP_OPT is used elsewhere, so the fix is either: Line 18470: GREP_OPT="-a" or line 7419: Add -a after GREP_OPT -- System Information: Debian Release: stretch/sid APT prefers unstable APT policy: (500, 'unstable') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.0.0-2-amd64 (SMP w/6 CPU cores) Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages rkhunter depends on: ii binutils 2.25-10 ii debconf [debconf-2.0] 1.5.57 ii file 1:5.22+15-2 ii lsof 4.86+dfsg-1 ii net-tools 1.60-26+b1 ii perl 5.20.2-6 ii ucf 3.0030 Versions of packages rkhunter recommends: ii bsd-mailx [mailx] 8.1.2-0.20150408cvs-1 ii curl 7.43.0-1 ii iproute2 4.0.0-1 ii postfix [mail-transport-agent] 2.11.3-1 ii unhide 20121229-1+b1 ii unhide.rb 22-1 ii wget 1.16.3-3 Versions of packages rkhunter suggests: ii liburi-perl 1.64-1 ii libwww-perl 6.13-1 ii powermgmt-base 1.31+nmu1 -- Configuration Files: /etc/logcheck/ignore.d.server/rkhunter [Errno 13] Permission denied: u'/etc/logcheck/ignore.d.server/rkhunter' /etc/rkhunter.conf changed [not included] -- debconf information excluded -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org