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| author | Justin Clift <justin@postgresql.org> | 2016-07-15 14:18:37 +0100 |
|---|---|---|
| committer | Brad King <brad.king@kitware.com> | 2016-07-21 10:05:46 -0400 |
| commit | 11768733d321df55b0efcb70b278c71b8e216cf7 (patch) | |
| tree | f56cb0e1e1055e7d462a3508d284055b173ffa03 | |
| parent | e31084e65745f9dd422c6aff0a2ed4ada6918805 (diff) | |
| download | cmake-11768733d321df55b0efcb70b278c71b8e216cf7.tar.gz | |
NSIS: Quote uninstaller path when executing it in a shell
Protect our `$0` reference in the shell as `"$0"`. Otherwise it works
with a space in the path only due to an insecure Windows feature.
Prior to this fix, any installer using the option added by commit
v2.8.9~234^2 (Added CPACK_NSIS_ENABLE_UNINSTALL_BEFORE_INSTALL,
2011-06-11) exposes a local privilege escalation vulnerability.
Reported-by: Amir Szekely <kichik@gmail.com>
Reported-by: Ug_0 Security
| -rw-r--r-- | Help/release/3.6.rst | 6 | ||||
| -rw-r--r-- | Modules/NSIS.template.in | 2 |
2 files changed, 7 insertions, 1 deletions
diff --git a/Help/release/3.6.rst b/Help/release/3.6.rst index 771c9dd4cb..144537de0e 100644 --- a/Help/release/3.6.rst +++ b/Help/release/3.6.rst @@ -308,3 +308,9 @@ Other Changes preferred future use is upper cased component names in variables. New variables that will be added to CPackRPM in later versions will only support upper cased component variable format. + +* The CPack NSIS generator's configuration file template was fixed to + quote the path to the uninstaller tool used by the + :variable:`CPACK_NSIS_ENABLE_UNINSTALL_BEFORE_INSTALL` option. + This avoids depending on an insecure Windows feature to run an + uninstaller tool with a space in the path. diff --git a/Modules/NSIS.template.in b/Modules/NSIS.template.in index 1ef3d28c76..92a31422fb 100644 --- a/Modules/NSIS.template.in +++ b/Modules/NSIS.template.in @@ -920,7 +920,7 @@ uninst: ClearErrors StrLen $2 "\Uninstall.exe" StrCpy $3 $0 -$2 # remove "\Uninstall.exe" from UninstallString to get path - ExecWait '$0 _?=$3' ;Do not copy the uninstaller to a temp file + ExecWait '"$0" _?=$3' ;Do not copy the uninstaller to a temp file IfErrors uninst_failed inst uninst_failed: |