Public bug reported:
My AI told me this..
**Package:** rkhunter
**Version:** 1.4.6-12
**OS:** Ubuntu 24.04 LTS (Noble Numbat)
**Problem Description:**
When attempting to update rkhunter definitions using `sudo rkhunter --update`,
the command consistently fails with the error message:
`Invalid WEB_CMD configuration option: Relative pathname: "/usr/bin/curl"`
(or `/usr/bin/wget` if that is configured)
This occurs even after `rkhunter` has been cleanly reinstalled and the
`WEB_CMD` option in `/etc/rkhunter.conf` has been explicitly set to a
full, absolute path (e.g., `WEB_CMD="/usr/bin/curl"`).
**Steps to Reproduce:**
1. Ensure rkhunter 1.4.6-12 is installed on Ubuntu 24.04 LTS.
(A clean reinstallation using `sudo apt remove --purge rkhunter && sudo apt
install rkhunter -y` also demonstrates the issue.)
2. Verify or set `WEB_CMD` in `/etc/rkhunter.conf` to a valid absolute path,
e.g.:
`sudo sed -i '/^WEB_CMD=/d' /etc/rkhunter.conf`
`echo 'WEB_CMD="/usr/bin/curl"' | sudo tee -a /etc/rkhunter.conf`
3. Attempt to update the database:
`sudo rkhunter --update`
**Expected Behavior:**
`rkhunter --update` should successfully connect and download updates, accepting
the provided absolute path for `WEB_CMD`.
**Observed Behavior:**
`rkhunter` incorrectly reports the absolute path (`/usr/bin/curl`) as a
"Relative pathname" and aborts the update process. This prevents `rkhunter`
from being able to fetch updated definitions.
**Impact:**
Users are unable to keep their `rkhunter` definitions up-to-date, compromising
the effectiveness of the rootkit detection tool.
Operating System: Ubuntu 24.04.2 LTS
Kernel: Linux 6.11.0-26-generic
Architecture: x86-64
Hardware Vendor: INTEL Corporation
Hardware Model: H61
Firmware Version: 4.6.5
Firmware Date: Wed 2022-08-31
Firmware Age: 2y 9month 1w 4d
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: rkhunter 1.4.6-12
ProcVersionSignature: Ubuntu 6.11.0-26.26~24.04.1-generic 6.11.11
Uname: Linux 6.11.0-26-generic x86_64
ApportVersion: 2.28.1-0ubuntu3.7
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Thu Jun 12 12:33:16 2025
InstallationDate: Installed on 2024-08-23 (293 days ago)
InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Release amd64 (20240424)
PackageArchitecture: all
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
SourcePackage: rkhunter
UpgradeStatus: No upgrade log present (probably fresh install)
mtime.conffile..etc.rkhunter.conf: 2025-06-12T12:28:35.558927
** Affects: rkhunter (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble wayland-session
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https://bugs.launchpad.net/bugs/2114145
Title:
rkhunter --update fails with "Relative pathname" error for valid
absolute WEB_CMD on Ubuntu 24.04
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