mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-23 06:03:40 +00:00
7bfdb02528
Fixes CVE-2021-36369 https://github.com/mkj/dropbear/releases/tag/DROPBEAR_2022.82
40 lines
1.3 KiB
Diff
40 lines
1.3 KiB
Diff
diff --git a/svr-chansession.c b/svr-chansession.c
|
|
index 9ae2e60..2db7598 100644
|
|
--- a/svr-chansession.c
|
|
+++ b/svr-chansession.c
|
|
@@ -948,6 +948,8 @@ static void addchildpid(struct ChanSess *chansess, pid_t pid) {
|
|
static void execchild(const void *user_data) {
|
|
const struct ChanSess *chansess = user_data;
|
|
char *usershell = NULL;
|
|
+ const char *path = (getuid() == 0) ? DEFAULT_ROOT_PATH : DEFAULT_PATH;
|
|
+ const char *ldpath = NULL;
|
|
char *cp = NULL;
|
|
char *envcp = getenv("LANG");
|
|
if (envcp != NULL) {
|
|
@@ -965,6 +967,11 @@ static void execchild(const void *user_data) {
|
|
seedrandom();
|
|
#endif
|
|
|
|
+ if (getenv("PATH")) {
|
|
+ path = getenv("PATH");
|
|
+ }
|
|
+ ldpath = getenv("LD_LIBRARY_PATH");
|
|
+
|
|
/* clear environment if -e was not set */
|
|
/* if we're debugging using valgrind etc, we need to keep the LD_PRELOAD
|
|
* etc. This is hazardous, so should only be used for debugging. */
|
|
@@ -1012,10 +1019,9 @@ static void execchild(const void *user_data) {
|
|
addnewvar("LOGNAME", ses.authstate.pw_name);
|
|
addnewvar("HOME", ses.authstate.pw_dir);
|
|
addnewvar("SHELL", get_user_shell());
|
|
- if (getuid() == 0) {
|
|
- addnewvar("PATH", DEFAULT_ROOT_PATH);
|
|
- } else {
|
|
- addnewvar("PATH", DEFAULT_PATH);
|
|
+ addnewvar("PATH", path);
|
|
+ if (ldpath != NULL) {
|
|
+ addnewvar("LD_LIBRARY_PATH", ldpath);
|
|
}
|
|
if (cp != NULL) {
|
|
addnewvar("LANG", cp);
|