Found way to change directory in rbash!
Configuration Information [Automatically generated, do not change]: Machine: x86_64 OS: linux-gnu Compiler: gcc Compilation CFLAGS: -DPROGRAM='bash' -DCONF_HOSTTYPE='x86_64' -DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='x86_64-unknown-linux-gnu' -DCONF_VENDOR='unknown' -DLOCALEDIR='/usr/local/share/locale' -DPACKAGE='bash' -DSHELL -DHAVE_CONFIG_H -I. -I. -I./include -I./lib -g -O2 -Wno-parentheses -Wno-format-security uname output: Linux bobi-HP-xw4300-Workstation 4.15.0-34-generic #37~16.04.1-Ubuntu SMP Tue Aug 28 10:44:06 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux Machine Type: x86_64-unknown-linux-gnu Bash Version: 4.4 Patch Level: 12 Release Status: release Description: As you know, the cd command is restricted when running rbash.Well, the PWD variable can be modified, so directory can be changed. Repeat-By: I ran rbash, so cd was restricted.Then I tried to modify the PWD variable, and I changed the current working directory successfully. Fix: Restrict modifying the PWD variable.
Re: Found way to change directory in rbash!
On 10/1/18 8:04 AM, boris.valkov...@gmail.com wrote: > Bash Version: 4.4 > Patch Level: 12 > Release Status: release > > Description: > As you know, the cd command is restricted when running rbash.Well, > the PWD variable can be modified, so directory can be changed. > Repeat-By: > I ran rbash, so cd was restricted.Then I tried to modify the PWD > variable, and I changed the current working directory successfully. That doesn't change the current working directory. The shell is still in the same directory it was before. -- ``The lyf so short, the craft so long to lerne.'' - Chaucer ``Ars longa, vita brevis'' - Hippocrates Chet Ramey, UTech, CWRUc...@case.eduhttp://tiswww.cwru.edu/~chet/
