Wpscan: Cannot run wpscan after updating Kali

[J4C0814N]

Subject of the issue

I cannot run wpscan after updating Kali last night. I get a gem dependency error with the activesupport gem.

Your environment

• Version of WPScan: Cannot determine, wpscan wont run
• Version of Ruby: Ruby 2.5.1p57 (2018-03-29 revision 63029) [i386-linux-gnu]
• Operating System (OS): Kali 4.18.0-kali2-686 Debian 4.18.10-2kali1

Steps to reproduce

sudo apt-get update && sudo apt-get upgrade && sudo apt-get dist-upgrade
try to run wpscan

Expected behavior

wpscan runs.

Actual behavior

Any attempts to run wpscan threw the following error:

Traceback (most recent call last):
    16: from /usr/local/bin/wpscan:23:in '<main>'
    15: from /usr/lib/ruby/2.5.0/rubygems.rb:309:in 'activate_bin_path'
    14: from /usr/lib/ruby/2.5.0/rubygems.rb:309:in 'synchronize'
    13: from /usr/lib/ruby/2.5.0/rubygems.rb:310:in 'block in activate_bin_path'
    12: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1440:in 'activate'
    11: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1458:in 'activate_dependencies'
    10: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1458:in 'each'
     9: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1472:in 'block in activate_dependencies'
     8: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1440:in 'activate'
     7: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1458:in 'activate_dependencies'
     6: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1458:in 'each'
     5: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1472:in 'block in activate_dependencies'
     4: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1440:in 'activate'
     3: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1458:in 'activate_dependencies'
     2: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1458:in 'each'
     1: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1469:in 'block in activate_dependencies'
/usr/lib/ruby/2.5.0/rubygems/dependency.rb:312:in 'to_specs': Could not find 'activesupport' (~> 4.2.1) - did find: [activesupport-5.2.1] (Gem::MissingSpecVersionError)
Checked in 'GEM_PATH=/root/.gem/ruby/2.5.0:/var/lib/gems/2.5.0:/usr/lib/i386-linux-gnu/rubygems-integration/2.5.0:/usr/share/rubygems-integration/2.5.0:/usr/share/rubygems-integration/all', execute 'gem env' for more information

So I installed activesupport 4.2.1 with gem install activesupport -v 4.2.1
and now when I try to run wpscan I get the following error:

Traceback (most recent call last):
    11: from /usr/local/bin/wpscan:23:in '<main>'
    10: from /usr/lib/ruby/2.5.0/rubygems.rb:309:in 'activate_bin_path'
     9: from /usr/lib/ruby/2.5.0/rubygems.rb:309:in 'synchronize'
     8: from /usr/lib/ruby/2.5.0/rubygems.rb:310:in 'block in activate_bin_path'
     7: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1440:in 'activate'
     6: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1458:in 'activate_dependencies'
     5: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1458:in 'each'
     4: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1472:in 'block in activate_dependencies'
     3: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1440:in 'activate'
     2: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1458:in 'activate_dependencies'
     1: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1458:in 'each'
/usr/lib/ruby/2.5.0/rubygems/specification.rb:1466:in 'block in activate_dependencies': can't satisfy 'activesupport (~> 5.2)', already activated 'activesupport-4.2.1' (Gem::LoadError)

What have you already tried

Tried updating Ruby through apt-get
gem update
gem install wpscan
downloading the git repo and running bundle install && rake install
gem install activesupport -v 4.2.1

Things you have tried (where relevant):

• Update WPScan to the latest version [X ]
• Update Ruby to the latest version [X ]
• Ensure you can reach the target site using cURL [X ]
• Proxied WPScan through a HTTP proxy to view the raw traffic [ ]
• Ensure you are using a supported Operating System (Linux and macOS) [X]

[FireFart]

@erwanlr aside from the actual issue, what do you think about catching the Gem::LoadError and displaying a message that people should NOT install gems manually if they are on kali linux?

[ethicalhack3r]

Assuming you're running wpscan with just wpscan in the terminal?

[erwanlr]

@FireFart I don't like such specific things, we did it in the v2 but people still tried to install whatever rather than open a bug issue on the Kali tracker.

Here I don't get the error, it says require activesupport 4.2.1 even though the ~> 5.2 is in the gemspec, and then when the 4.2.1 is installed, it says that the 4.2.1 is already loaded and can't load the 5.2.x. Something went clearly wrong after updating Kali it seems

[FireFart]

@erwanlr jeah but people tend to make it worse by installing the gems manually :/

[J4C0814N]

@ethicalhack3r Yes this happens when trying to run wpscan directly from the terminal, with any or no flags.

@FireFart and @erwanlr Should I uninstall and re-install Ruby, then re-install wpscan?
I am not a Ruby developer, but I would not have thought installing the version of a gem it was complaining about missing would break it. (not at wpscan, I mean Ruby). I install, remove and update python modules all the time and it does not affect the python environment this heavily.

This could be a well known quirk of Ruby, but if you didn't know better, the messaging , to me at least, indicated a simple fix of "Just install version 4.2.1 of activesupport". That is why I performed those steps.

[FireFart]

normally this messes things up in kali if you try to install gems as everything is bundled in kali together. So you can try reinstalling wpscan via apt again and see if this fixes the error

[J4C0814N]

Ah ok, I ran apt-get remove --purge wpscan, apt autoremove and then apt-get install wpscan. But I get the same error as above:

/usr/lib/ruby/2.5.0/rubygems/specification.rb:1466:in 'block in activate_dependencies': can't satisfy 'activesupport (~> 5.2)', already activated 'activesupport-4.2.1' (Gem::LoadError)

[Excoroxus]

can anyone solve the problem ?

[erwanlr]

I would open an issue on the Kali bug tracker (https://bugs.kali.org/view_all_bug_page.php) or forum (https://forums.kali.org/forum.php)

[parteeksingh005]

Subject of the issue:
I cannot run wpscan after updating Kali last night. I get a gem dependency error with the activesupport gem.

My Kali environment:
Version of WPScan: Cannot determine, wpscan wont run
Version of Ruby: ruby 2.5.1p57 (2018-03-29 revision 63029) [x86_64-linux-gnu]
Operating System (OS): Linux kali 4.18.0-kali2-amd64 #1 SMP Debian 4.18.10-2kali1 (2018-10-09) x86_64 GNU/Linux

Expected behavior:
wpscan runs.

Actual behavior:
Any attempts to run wpscan threw the following error:
Traceback (most recent call last):
11: from /usr/local/bin/wpscan:23:in <main>' 10: from /usr/lib/ruby/2.5.0/rubygems.rb:309:inactivate_bin_path'
9: from /usr/lib/ruby/2.5.0/rubygems.rb:309:in synchronize' 8: from /usr/lib/ruby/2.5.0/rubygems.rb:310:inblock in activate_bin_path'
7: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1440:in activate' 6: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1458:inactivate_dependencies'
5: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1458:in each' 4: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1472:inblock in activate_dependencies'
3: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1440:in activate' 2: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1458:inactivate_dependencies'
1: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1458:in each' /usr/lib/ruby/2.5.0/rubygems/specification.rb:1466:inblock in activate_dependencies': can't satisfy 'activesupport (~> 5.2)', already activated 'activesupport-4.2.10' (Gem::LoadError)
anyone can help me out with this issue?

[WouterVanVegchel]

I have the same issue

[ethicalhack3r]

Can someone who has the problem open an issue on the Kali bug tracker (https://bugs.kali.org/view_all_bug_page.php) or forum (https://forums.kali.org/forum.php) and link to it from here, please?

[sumgr0]

Following...

Getting the same error on Kali, when triggering the command wpscan.

[FireFart]

@sumgro as @ethicalhack3r said it's an kali issue, not a wpscan issue. Can you please open a bug on the kali bug tracker and link it here? https://bugs.kali.org/main_page.php

[sumgr0]

@FireFart created a ticket on kali bug tracker - https://bugs.kali.org/view.php?id=5120

[sumgr0]

this seems to have been caused by clash of 2 processes of installing via gem and through kali repositories...

https://bugs.kali.org/view.php?id=5120#

Can anyone confirm this?

[ethicalhack3r]

TLDR; If using Kali do not install wpscan from any other source (such as gem install wpscan), use Kali's (apt-get update I assume)

[sumgr0]

Here is what I did to resolve this (based on the suggestion)

Remove wpscan installed manually through gem - gem uninstall wpscan
Install wpscan via Kali repository - apt get wpscan

wpscan now works.

[sumgr0]

TLDR; If using Kali do not install wpscan from any other source (such as gem install wpscan), use Kali's (apt-get update I assume)

True that...

[Rzqu]

I also have this issue so im following this thread.

[Rzqu]

Here is what I did to resolve this (based on the suggestion)

Remove wpscan installed manually through gem - gem uninstall wpscan
Install wpscan via Kali repository - apt get wpscan

wpscan now works.

This does not work for me.

[sumgr0]

@rzqu this seems like a different error... maybe @ethicalhack3r can confirm

[Rzqu]

@sumgro After re-installing wpscan through gem i get this

Installing it through apt-get install does nothing for me, the install goes through but when running wpscan i end up with this

[sumgr0]

@rzqu could try removing wpscan through both gem and apt, use:
gem uninstall wpscan
apt remove wpscan

Then, install it via apt using: apt install wpscan

[Rzqu]

@sumgro Ive tried what you suggested and im now faced with this error

[cohernandez]

I solved the same problem with this sequence

1. gem uninstall wpscan
2. apt remove wpscan
3. apt-get autoremove
4. apt-get autoclean
5. apt install wpscan

[Rzqu]

I solved the same problem with this sequence

1. gem uninstall wpscan
2. apt remove wpscan
3. apt-get autoremove
4. apt-get autoclean
5. apt install wpscan

Unfortunately this didnt fix my problem, same error as above

Whats interesting is that in /usr/bin/ wpscan doesnt exist, even after apt-get install wpscan

[dhd0004]

I did this sequence:
gem uninstall wpscan
apt remove wpscan
apt-get autoremove
apt-get autoclean
apt install wpscan

And still having the same error:
/usr/lib/ruby/2.5.0/rubygems/specification.rb:1466:in `block in activate_dependencies': can't satisfy 'activesupport (~> 5.2)', already activated 'activesupport-4.2.10' (Gem::LoadError)

[Rzqu]

@dhd0004 have a look at this https://bugs.kali.org/view.php?id=5134

Apparently mine was leaving little gems behind (excuse the pun)

i renamed /var/lib/gems/2.5.0/gems to /var/lib/gems/2.5.0/gems.old and my WPScan started working.

Maybe try that?

[dhd0004]

that did not word for me:

ls -lsrt /var/lib/gems/2.5.0/gems.old/
total 36
4 drwxr-xr-x 4 root root 4096 Nov 15 16:59 concurrent-ruby-1.1.3
4 drwxr-xr-x 3 root root 4096 Nov 15 16:59 activesupport-5.1.6
4 drwxr-xr-x 3 root root 4096 Nov 15 16:59 opt_parse_validator-0.0.15.2
4 drwxr-xr-x 5 root root 4096 Nov 15 16:59 cms_scanner-0.0.39.0
4 drwxr-xr-x 3 root root 4096 Nov 15 17:00 activesupport-5.2.1
4 drwxr-xr-x 3 root root 4096 Nov 15 17:00 ruby-progressbar-1.10.0
4 drwxr-xr-x 9 root root 4096 Nov 15 17:00 yajl-ruby-1.4.1
4 drwxr-xr-x 4 root root 4096 Nov 15 17:00 cms_scanner-0.0.41.0
4 drwxr-xr-x 4 root root 4096 Nov 15 17:01 cms_scanner-0.0.40.3

Y renamed from this:

ls -lsrt /var/lib/gems/2.5.0/gems
ls: cannot access '/var/lib/gems/2.5.0/gems': No such file or directory

Error still persists:

wpscan
Traceback (most recent call last):
11: from /usr/local/bin/wpscan:23:in <main>' 10: from /usr/lib/ruby/2.5.0/rubygems.rb:309:inactivate_bin_path'
9: from /usr/lib/ruby/2.5.0/rubygems.rb:309:in synchronize' 8: from /usr/lib/ruby/2.5.0/rubygems.rb:310:inblock in activate_bin_path'
7: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1440:in activate' 6: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1458:inactivate_dependencies'
5: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1458:in each' 4: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1472:inblock in activate_dependencies'
3: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1440:in activate' 2: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1458:inactivate_dependencies'
1: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1458:in each' /usr/lib/ruby/2.5.0/rubygems/specification.rb:1466:inblock in activate_dependencies': can't satisfy 'activesupport (~> 5.2)', already activated 'activesupport-4.2.10' (Gem::LoadError)

[Rzqu]

@dhd0004

Im assuming that youve already done gem uninstall wpscan before renaming that folder?

[dhd0004]

yes, i executed these commands:

gem uninstall wpscan
sudo apt-get autoremove wpscan
sudo mv /var/lib/gems/2.5.0/gems /var/lib/gems/2.5.0/gems.old
sudo apt-get install wpscan
wpscan
Traceback (most recent call last):
11: from /usr/local/bin/wpscan:23:in <main>' 10: from /usr/lib/ruby/2.5.0/rubygems.rb:309:inactivate_bin_path'
9: from /usr/lib/ruby/2.5.0/rubygems.rb:309:in synchronize' 8: from /usr/lib/ruby/2.5.0/rubygems.rb:310:inblock in activate_bin_path'
7: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1440:in activate' 6: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1458:inactivate_dependencies'
5: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1458:in each' 4: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1472:inblock in activate_dependencies'
3: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1440:in activate' 2: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1458:inactivate_dependencies'
1: from /usr/lib/ruby/2.5.0/rubygems/specification.rb:1458:in each' /usr/lib/ruby/2.5.0/rubygems/specification.rb:1466:inblock in activate_dependencies': can't satisfy 'activesupport (~> 5.2)', already activated 'activesupport-4.2.10' (Gem::LoadError)

[Milimas]

i typed "gem install wpscan" in terminal and i open wpscan and it works

[faudbispa]

I followed this serial, but not working

1. gem uninstall wpscan

1. apt remove wpscan

2. apt-get autoremove

3. apt-get autoclean

4. apt install wpscan

Traceback (most recent call last):
25: from /usr/bin/wpscan:23:in <main>' 24: from /usr/bin/wpscan:23:inload'
23: from /usr/share/rubygems-integration/all/gems/wpscan-3.4.4/bin/wpscan:3:in <top (required)>' 22: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:inrequire'
21: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in require' 20: from /usr/share/rubygems-integration/all/gems/wpscan-3.4.4/lib/wpscan.rb:5:in 19: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in require' 18: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:inrequire'
17: from /usr/lib/ruby/vendor_ruby/active_support/all.rb:5:in <top (required)>' 16: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:inrequire'
15: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in require' 14: from /usr/lib/ruby/vendor_ruby/active_support/core_ext.rb:3:in 13: from /usr/lib/ruby/vendor_ruby/active_support/core_ext.rb:3:in each' 12: from /usr/lib/ruby/vendor_ruby/active_support/core_ext.rb:4:inblock in 11: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in require' 10: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:inrequire'
9: from /usr/lib/ruby/vendor_ruby/active_support/core_ext/big_decimal.rb:3:in <top (required)>' 8: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:inrequire'
7: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in require' 6: from /usr/lib/ruby/vendor_ruby/active_support/core_ext/big_decimal/conversions.rb:4:in 5: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in require' 4: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:inrequire'
3: from /var/lib/gems/2.5.0/gems/bigdecimal-1.4.3/lib/bigdecimal/util.rb:9:in <top (required)>' 2: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:39:inrequire'
1: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:135:in rescue in require' /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:135:inrequire': /var/lib/gems/2.5.0/gems/bigdecimal-1.4.3/lib/bigdecimal/util.so: undefined symbol: rmpd_util_str_to_d - /var/lib/gems/2.5.0/gems/bigdecimal-1.4.3/lib/bigdecimal/util.so (LoadError)

[afewcc]

@dhd0004 and @faudbispa

Have you tried installing these 2 gems

gem install activesupport
gem install public_suffix

and then running wpscan ?

[muaz-alhilal]

same issue with me

Traceback (most recent call last):
28: from /usr/bin/wpscan:23:in <main>' 27: from /usr/bin/wpscan:23:inload'
26: from /usr/share/rubygems-integration/all/gems/wpscan-3.4.4/bin/wpscan:3:in <top (required)>' 25: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:inrequire'
24: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in require' 23: from /usr/share/rubygems-integration/all/gems/wpscan-3.4.4/lib/wpscan.rb:5:in 22: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in require' 21: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:inrequire'
20: from /var/lib/gems/2.5.0/gems/activesupport-5.2.2/lib/active_support/all.rb:5:in <top (required)>' 19: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:inrequire'
18: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in require' 17: from /var/lib/gems/2.5.0/gems/activesupport-5.2.2/lib/active_support/core_ext.rb:3:in 16: from /var/lib/gems/2.5.0/gems/activesupport-5.2.2/lib/active_support/core_ext.rb:3:in each' 15: from /var/lib/gems/2.5.0/gems/activesupport-5.2.2/lib/active_support/core_ext.rb:4:inblock in 14: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in require' 13: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:inrequire'
12: from /var/lib/gems/2.5.0/gems/activesupport-5.2.2/lib/active_support/core_ext/object.rb:13:in <top (required)>' 11: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:inrequire'
10: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in require' 9: from /var/lib/gems/2.5.0/gems/activesupport-5.2.2/lib/active_support/core_ext/object/json.rb:8:in 8: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in require' 7: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:inrequire'
6: from /var/lib/gems/2.5.0/gems/activesupport-5.2.2/lib/active_support/core_ext/big_decimal/conversions.rb:4:in <top (required)>' 5: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:inrequire'
4: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in require' 3: from /var/lib/gems/2.5.0/gems/bigdecimal-1.4.3/lib/bigdecimal/util.rb:9:in 2: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:39:in require' 1: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:135:inrescue in require'
/usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:135:in `require': /var/lib/gems/2.5.0/gems/bigdecimal-1.4.3/lib/bigdecimal/util.so: undefined symbol: rmpd_util_str_to_d - /var/lib/gems/2.5.0/gems/bigdecimal-1.4.3/lib/bigdecimal/util.so (LoadError)

[erwanlr]

@muaz-alhilal, @faudbispa see https://github.com/wpscanteam/wpscan/issues/1283

Closing this issue as reports are no longer related to the main post.

Furthermore, before posting a new issue, please check the Readme, do some research either in the issues here or tracker of Kali, and google.

[faudbispa]

Sir,
My prob was solved and I informed it by mail. And I gave the solution too.
Thank you

On Sun, Feb 24, 2019, 12:35 PM Erwan <[email protected] wrote:

@muaz-alhilal https://github.com/muaz-alhilal, @faudbispa
https://github.com/faudbispa see #1283
https://github.com/wpscanteam/wpscan/issues/1283

Closing this issue as reports are no longer related to the main post.

Furthermore, before posting a new issue, please check the Readme, do some
research either in the issues here or tracker of Kali, and google.

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[soham7]

wpscan

Traceback (most recent call last):
25: from /usr/bin/wpscan:23:in <main>' 24: from /usr/bin/wpscan:23:inload'
23: from /usr/share/rubygems-integration/all/gems/wpscan-3.4.5/bin/wpscan:3:in <top (required)>' 22: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:inrequire'
21: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in require' 20: from /usr/share/rubygems-integration/all/gems/wpscan-3.4.5/lib/wpscan.rb:5:in 19: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in require' 18: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:inrequire'
17: from /var/lib/gems/2.5.0/gems/activesupport-5.2.3/lib/active_support/all.rb:5:in <top (required)>' 16: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:inrequire'
15: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in require' 14: from /var/lib/gems/2.5.0/gems/activesupport-5.2.3/lib/active_support/core_ext.rb:3:in 13: from /var/lib/gems/2.5.0/gems/activesupport-5.2.3/lib/active_support/core_ext.rb:3:in each' 12: from /var/lib/gems/2.5.0/gems/activesupport-5.2.3/lib/active_support/core_ext.rb:4:inblock in 11: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in require' 10: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:inrequire'
9: from /var/lib/gems/2.5.0/gems/activesupport-5.2.3/lib/active_support/core_ext/big_decimal.rb:3:in <top (required)>' 8: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:inrequire'
7: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in require' 6: from /var/lib/gems/2.5.0/gems/activesupport-5.2.3/lib/active_support/core_ext/big_decimal/conversions.rb:4:in 5: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in require' 4: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:inrequire'
3: from /var/lib/gems/2.5.0/gems/bigdecimal-1.4.3/lib/bigdecimal/util.rb:9:in <top (required)>' 2: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:39:inrequire'
1: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:135:in rescue in require' /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:135:inrequire': /var/lib/gems/2.5.0/gems/bigdecimal-1.4.3/lib/bigdecimal/util.so: undefined symbol: rmpd_util_str_to_d - /var/lib/gems/2.5.0/gems/bigdecimal-1.4.3/lib/bigdecimal/util.so (LoadError)

Tried every cure but this seems to be the last scene. Can anybody please help?

[xffxe4]

Resolved the same issue. In my fix, I did NOT uninstall anything.

apt-get install ruby-dev
gem install ffi --platform=ruby
gem install yajl-ruby
apt-get install libxslt-dev libxml2-dev
gem install nokogiri -- --use-system-libraries

Then wpscan worked.

[EmperorSrikanth]

Reall

Resolved the same issue. In my fix, I did NOT uninstall anything.

apt-get install ruby-dev
gem install ffi --platform=ruby
gem install yajl-ruby
apt-get install libxslt-dev libxml2-dev
gem install nokogiri -- --use-system-libraries

Then wpscan worked.

Yes it worked for me too!

[PanDa1G1]

gem install nokogiri -- --use-system-libraries

it's useful,thank you!

[gsandovalbonilla]

Hi,
I solved the issue with this comand agpt-get upgrade.
I did two time and it works

[xrobb30]

I solved the same problem with this sequence

1. gem uninstall  wpscan

2. apt remove wpscan

3. apt-get autoremove

4. apt-get autoclean

5. apt install wpscan

i did this step, and its workedd thank you

[Ehsan-Nezami]

first, uninstall all Wpscan with the following command:

gem uninstall wpscan
apt remove wpscan

then, use the following command to fix it:

sudo apt-get update
gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB
\curl -sSL https://get.rvm.io | bash -s stable --ruby --ignore-dotfiles
\curl -sSL https://get.rvm.io | bash -s stable --rails
gem install rails 5
source /usr/local/rvm/scripts/rvm
rvm reinstall ruby 2.6.0
rvm install "ruby-2.5.3"
gem install wpscan

Make sure it is installed correctly with this command:

which ruby
ruby --version
rails -v

It works now.

[Hellsender01]

Was having same issue

Try - gem install wpscan

worked on my side

[BalbeerJaat]

gem update
gem install wpscan
wpscan --update

Solved it for me!

[0xBones]

sudo gem install wpscan

worked for me.

Kali 2020.1a