[Lazarus] Security issue (symlink attack) in Lazarus filed on Fedora's bugzilla

[Mattias Gaertner]

On Fri, 29 Aug 2008 14:55:00 +0200
Joost van der Sluis <joost at cnoc.nl> wrote:

> Hi all,
> 
> As the packager of Lazarus in Fedora, I get notifications if someone
> files a bug in Fedora's bug-tracker. 
> 
> Now someone added a bug-report with a security issue:
> https://bugzilla.redhat.com/show_bug.cgi?id=460642
> 
> And indeed, if someone add a symlink like 'ln
> -s /tmp/fpc_patchdir /etc' and thereafter someone with
> root-permissions runs the check_fpc_dependencies.sh script with th
> following code in it he won't be happy:
> 
> 89 TmpDir=/tmp/fpc_patchdir
> 90 if [ "$WithTempDir" = "yes" ]; then
> 91 if [ -d $TmpDir ]; then
> 92   rm -rf $TmpDir/*
> 93     rm -r $TmpDir
> 94   fi
> 
> How can we fix this?

I replaced it with
  rm -rf $TmpDir

Mattias