Merge tag 'v2.35.2.windows.1'

Git for Windows v2.35.2

Changes since Git for Windows v2.35.1(2) (February 1st 2022)

This version addresses CVE-2022-24765 and CVE-2022-24767.

New Features

  * Comes with Git v2.35.2.

Bug Fixes

  * The uninstaller was hardened to avoid a vulnerability when running
    under the SYSTEM account, addressing CVE-2022-24767.

Signed-off-by: Victoria Dye <[email protected]>

Author: vdye

Documentation/config/safe.txt

@@ -35,3 +35,9 @@ use the uid of the user that did so.
 If that is not what you would prefer and want git to only trust
 repositories that are owned by root instead, then you should remove
 the `SUDO_UID` variable from root's environment.
+
+Due to the permission model on Windows where ACLs are used instead of
+Unix' simpler permission model, it can be a bit tricky to figure out why
+a directory is considered unsafe. To help with this, Git will provide
+more detailed information when the environment variable
+`GIT_TEST_DEBUG_UNSAFE_DIRECTORIES` is set to `true`.

compat/mingw.c

@@ -1,6 +1,7 @@
 #include "../git-compat-util.h"
 #include "win32.h"
 #include <aclapi.h>
+#include <sddl.h>
 #include <conio.h>
 #include <wchar.h>
 #include <winioctl.h>
@@ -3513,6 +3514,7 @@ int is_path_owned_by_current_sid(const char *path)
 	else if (sid && IsValidSid(sid)) {
 		/* Now, verify that the SID matches the current user's */
 		static PSID current_user_sid;
+		BOOL is_member;
 
 		if (!current_user_sid)
 			current_user_sid = get_current_user_sid();
@@ -3521,6 +3523,35 @@ int is_path_owned_by_current_sid(const char *path)
 		    IsValidSid(current_user_sid) &&
 		    EqualSid(sid, current_user_sid))
 			result = 1;
+		else if (IsWellKnownSid(sid, WinBuiltinAdministratorsSid) &&
+			 CheckTokenMembership(NULL, sid, &is_member) &&
+			 is_member)
+			/*
+			 * If owned by the Administrators group, and the
+			 * current user is an administrator, we consider that
+			 * okay, too.
+			 */
+			result = 1;
+		else if (git_env_bool("GIT_TEST_DEBUG_UNSAFE_DIRECTORIES", 0)) {
+			LPSTR str1, str2, to_free1 = NULL, to_free2 = NULL;
+
+			if (ConvertSidToStringSidA(sid, &str1))
+				to_free1 = str1;
+			else
+				str1 = "(inconvertible)";
+
+			if (!current_user_sid)
+				str2 = "(none)";
+			else if (!IsValidSid(current_user_sid))
+				str2 = "(invalid)";
+			else if (ConvertSidToStringSidA(current_user_sid, &str2))
+				to_free2 = str2;
+			else
+				str2 = "(inconvertible)";
+			warning("'%s' is owned by:\n\t'%s'\nbut the current user is:\n\t'%s'", path, str1, str2);
+			LocalFree(to_free1);
+			LocalFree(to_free2);
+		}
 	}
 
 	/*