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Boris avatar Ubuntu

Operation not permitted dpkg-deb: error: paste subprocess was killed by signal (Broken pipe) - Multiple packages

cn flag
Boris

When i try to install a new package i get the The following packages have unmet dependencies: message, so when i try apt -f install , i get the following output:

Reading database ... 119095 files and directories currently installed.)
Preparing to unpack .../x11-xkb-utils_7.7+3ubuntu0.18.04.1_amd64.deb ...
Unpacking x11-xkb-utils (7.7+3ubuntu0.18.04.1) ...
dpkg: error processing archive /var/cache/apt/archives/x11-xkb-utils_7.7+3ubuntu0.18.04.1_amd64.deb (--unpack):
 unable to create '/usr/bin/setxkbmap.dpkg-new' (while processing './usr/bin/setxkbmap'): Operation not permitted
dpkg-deb: error: paste subprocess was killed by signal (Broken pipe)
Preparing to unpack .../x11-common_1%3a7.7+19ubuntu7.1_all.deb ...
dpkg-query: no packages found matching nux-tools
Unpacking x11-common (1:7.7+19ubuntu7.1) ...
dpkg: error processing archive /var/cache/apt/archives/x11-common_1%3a7.7+19ubuntu7.1_all.deb (--unpack):
 error creating symbolic link './usr/bin/X11': Operation not permitted
Preparing to unpack .../gtk-update-icon-cache_3.22.30-1ubuntu4_amd64.deb ...
No diversion 'diversion of /usr/sbin/update-icon-caches to /usr/sbin/update-icon-caches.gtk2 by libgtk-3-bin', none removed.
No diversion 'diversion of /usr/share/man/man8/update-icon-caches.8.gz to /usr/share/man/man8/update-icon-caches.gtk2.8.gz by libgtk-3-bin', none removed.
Unpacking gtk-update-icon-cache (3.22.30-1ubuntu4) ...
dpkg: error processing archive /var/cache/apt/archives/gtk-update-icon-cache_3.22.30-1ubuntu4_amd64.deb (--unpack):
 unable to create '/usr/bin/gtk-update-icon-cache.dpkg-new' (while processing './usr/bin/gtk-update-icon-cache'): Operation not permitted
Preparing to unpack .../xfonts-utils_1%3a7.7+6_amd64.deb ...
Unpacking xfonts-utils (1:7.7+6) ...
dpkg: error processing archive /var/cache/apt/archives/xfonts-utils_1%3a7.7+6_amd64.deb (--unpack):
 unable to create '/usr/bin/bdftopcf.dpkg-new' (while processing './usr/bin/bdftopcf'): Operation not permitted
No apport report written because MaxReports is reached already
                                                              dpkg-deb: error: paste subprocess was killed by signal (Broken pipe)
Errors were encountered while processing:
 /var/cache/apt/archives/x11-xkb-utils_7.7+3ubuntu0.18.04.1_amd64.deb
 /var/cache/apt/archives/x11-common_1%3a7.7+19ubuntu7.1_all.deb
 /var/cache/apt/archives/gtk-update-icon-cache_3.22.30-1ubuntu4_amd64.deb
 /var/cache/apt/archives/xfonts-utils_1%3a7.7+6_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

When I then try to force-overwrite, for instance, the first error package, i get:

(Reading database ... 119095 files and directories currently installed.)
Preparing to unpack .../x11-xkb-utils_7.7+3ubuntu0.18.04.1_amd64.deb ...
Unpacking x11-xkb-utils (7.7+3ubuntu0.18.04.1) ...
dpkg: error processing archive /var/cache/apt/archives/x11-xkb-utils_7.7+3ubuntu0.18.04.1_amd64.deb (--install):
 unable to create '/usr/bin/setxkbmap.dpkg-new' (while processing './usr/bin/setxkbmap'): Operation not permitted
dpkg-deb: error: paste subprocess was killed by signal (Broken pipe)
Errors were encountered while processing:
 /var/cache/apt/archives/x11-xkb-utils_7.7+3ubuntu0.18.04.1_amd64.deb

No matter what I do, I seem to get the same error about not permitted operations! Does anyone have any idea what I can do?

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hr flag
steeldriver
Are there any extended file attributes on your `/usr/bin/` directory (check with `lsattr -ld /usr/bin`)? Are you running any kind of antivirus software that may place restrictions on the directory?
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Boris avatar
cn flag
Boris
@steeldriver lsattr-ld /usr/bin returns a lot of lines such as `/usr/bin/dpkg-deb Secure_Deletion, Immutable, Append_Only, Extents`, not sure what I should be looking for! As far as I know, there is not any antivirus installed, coincidentally, i was trying to install a package for that (ClamAV). The server in question is a Digital Ocean Droplet, so not sure which restrictions are in place...
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hr flag
steeldriver
Hmm... `lsattr -ld /usr/bin` should only return a single line (that's what the `-d` flag is for - don't descend into the directory) however if the directory also has non-default attribute `Immutable` that is indeed likely what is causing the `Operation not permitted` error.
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Boris avatar
cn flag
Boris
@steeldriver apologies, it does return one line now /usr/bin Secure_Deletion, Immutable, Append_Only, Indexed_directory, Extents
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hr flag
steeldriver
OK so you will need to figure out what is setting the attributes (did you run some `chattr` commands recently?) and relax them so that `dpkg` can add the files it wants to.
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Boris avatar
cn flag
Boris
@steeldriver If im being totally honest, I have no idea if those commands are ran. I was called to help because the server in question was used in a brute-force SSH attack. Following the tutorial of Digital Ocean, I was prompted to install the clamav and clamav daemon packages, which gave me the errors, so I assume the entire packages structure is a little messed up?
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hr flag
steeldriver
So some previous administrator has apparently made `/usr/bin` immutable, either manually (using the `chattr` command) or by installing some kind of "security" software that has taken control of system directories - I don't want to second guess that, you will need to work with the system's owner / administrator to decide how to proceed - if there is reason to believe that the system has been compromised then you should probably not try to save it but re-install and restore data from backups. FWIW I don't see any evidence so far that *"the entire packages structure is a little messed up"*.
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Boris avatar
cn flag
Boris
@steeldriver gotcha, thanks for the help!
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