diff options
| -rw-r--r-- | include/libbb.h | 2 | ||||
| -rw-r--r-- | libbb/correct_password.c | 5 | ||||
| -rw-r--r-- | libbb/pw_encrypt.c | 7 | ||||
| -rw-r--r-- | loginutils/chpasswd.c | 1 | ||||
| -rw-r--r-- | loginutils/passwd.c | 13 | ||||
| -rw-r--r-- | loginutils/sulogin.c | 8 | ||||
| -rw-r--r-- | networking/httpd.c | 8 |
7 files changed, 27 insertions, 17 deletions
diff --git a/include/libbb.h b/include/libbb.h index bd2dbe5..655ca01 100644 --- a/include/libbb.h +++ b/include/libbb.h @@ -1031,7 +1031,7 @@ extern int restricted_shell(const char *shell); */ extern void setup_environment(const char *shell, int clear_env, int change_env, const struct passwd *pw); extern int correct_password(const struct passwd *pw); -/* Returns a ptr to static storage */ +/* Returns a malloced string */ extern char *pw_encrypt(const char *clear, const char *salt, int cleanup); extern int obscure(const char *old, const char *newval, const struct passwd *pwdp); /* rnd is additional random input. New one is returned. diff --git a/libbb/correct_password.c b/libbb/correct_password.c index a4ded8b..f0b9384 100644 --- a/libbb/correct_password.c +++ b/libbb/correct_password.c @@ -40,6 +40,7 @@ int correct_password(const struct passwd *pw) { char *unencrypted, *encrypted; const char *correct; + int r; #if ENABLE_FEATURE_SHADOWPASSWDS /* Using _r function to avoid pulling in static buffers */ struct spwd spw; @@ -72,6 +73,8 @@ int correct_password(const struct passwd *pw) return 0; } encrypted = pw_encrypt(unencrypted, correct, 1); + r = (strcmp(encrypted, correct) == 0); + free(encrypted); memset(unencrypted, 0, strlen(unencrypted)); - return strcmp(encrypted, correct) == 0; + return r; } diff --git a/libbb/pw_encrypt.c b/libbb/pw_encrypt.c index d439fc3..762cbab 100644 --- a/libbb/pw_encrypt.c +++ b/libbb/pw_encrypt.c @@ -54,7 +54,7 @@ static void my_crypt_cleanup(void) char *pw_encrypt(const char *clear, const char *salt, int cleanup) { - static char *cipher; + char *encrypted; #if 0 /* was CONFIG_FEATURE_SHA1_PASSWORDS, but there is no such thing??? */ if (strncmp(salt, "$2$", 3) == 0) { @@ -62,11 +62,10 @@ char *pw_encrypt(const char *clear, const char *salt, int cleanup) } #endif - free(cipher); - cipher = my_crypt(clear, salt); + encrypted = my_crypt(clear, salt); if (cleanup) my_crypt_cleanup(); - return cipher; + return encrypted; } diff --git a/loginutils/chpasswd.c b/loginutils/chpasswd.c index 230ab0f..7308596 100644 --- a/loginutils/chpasswd.c +++ b/loginutils/chpasswd.c @@ -65,6 +65,7 @@ int chpasswd_main(int argc ATTRIBUTE_UNUSED, char **argv) bb_info_msg("Password for '%s' changed", name); logmode = LOGMODE_STDIO; free(name); + free(pass); } return 0; diff --git a/loginutils/passwd.c b/loginutils/passwd.c index fad226c..0a31137 100644 --- a/loginutils/passwd.c +++ b/loginutils/passwd.c @@ -16,22 +16,24 @@ static char* new_password(const struct passwd *pw, uid_t myuid, int algo) char salt[sizeof("$N$XXXXXXXX")]; /* "$N$XXXXXXXX" or "XX" */ char *orig = (char*)""; char *newp = NULL; - char *cipher = NULL; char *cp = NULL; char *ret = NULL; /* failure so far */ if (myuid && pw->pw_passwd[0]) { + char *encrypted; + orig = bb_askpass(0, "Old password:"); /* returns ptr to static */ if (!orig) goto err_ret; - cipher = pw_encrypt(orig, pw->pw_passwd, 1); /* returns ptr to static */ - if (strcmp(cipher, pw->pw_passwd) != 0) { + encrypted = pw_encrypt(orig, pw->pw_passwd, 1); /* returns malloced str */ + if (strcmp(encrypted, pw->pw_passwd) != 0) { syslog(LOG_WARNING, "incorrect password for '%s'", pw->pw_name); bb_do_delay(FAIL_DELAY); puts("Incorrect password"); goto err_ret; } + if (ENABLE_FEATURE_CLEAN_UP) free(encrypted); } orig = xstrdup(orig); /* or else bb_askpass() will destroy it */ newp = bb_askpass(0, "New password:"); /* returns ptr to static */ @@ -55,8 +57,8 @@ static char* new_password(const struct passwd *pw, uid_t myuid, int algo) strcpy(salt, "$1$"); crypt_make_salt(salt + 3, 4, 0); } - /* pw_encrypt returns ptr to static */ - ret = xstrdup(pw_encrypt(newp, salt, 1)); + /* pw_encrypt returns malloced str */ + ret = pw_encrypt(newp, salt, 1); /* whee, success! */ err_ret: @@ -64,7 +66,6 @@ static char* new_password(const struct passwd *pw, uid_t myuid, int algo) if (ENABLE_FEATURE_CLEAN_UP) free(orig); nuke_str(newp); if (ENABLE_FEATURE_CLEAN_UP) free(newp); - nuke_str(cipher); nuke_str(cp); return ret; } diff --git a/loginutils/sulogin.c b/loginutils/sulogin.c index f52ce8a..38812a6 100644 --- a/loginutils/sulogin.c +++ b/loginutils/sulogin.c @@ -72,6 +72,9 @@ int sulogin_main(int argc ATTRIBUTE_UNUSED, char **argv) #endif while (1) { + char *encrypted; + int r; + /* cp points to a static buffer that is zeroed every time */ cp = bb_askpass(timeout, "Give root password for system maintenance\n" @@ -81,7 +84,10 @@ int sulogin_main(int argc ATTRIBUTE_UNUSED, char **argv) bb_info_msg("Normal startup"); return 0; } - if (strcmp(pw_encrypt(cp, pwd->pw_passwd, 1), pwd->pw_passwd) == 0) { + encrypted = pw_encrypt(cp, pwd->pw_passwd, 1); + r = strcmp(encrypted, pwd->pw_passwd); + free(encrypted); + if (r == 0) { break; } bb_do_delay(FAIL_DELAY); diff --git a/networking/httpd.c b/networking/httpd.c index 78c6f4d..352a97d 100644 --- a/networking/httpd.c +++ b/networking/httpd.c @@ -1721,7 +1721,6 @@ static int checkPerm(const char *path, const char *request) } if (ENABLE_FEATURE_HTTPD_AUTH_MD5) { - char *cipher; char *pp; if (strncmp(p, request, u - request) != 0) { @@ -1732,9 +1731,10 @@ static int checkPerm(const char *path, const char *request) if (pp && pp[1] == '$' && pp[2] == '1' && pp[3] == '$' && pp[4] ) { - pp++; - cipher = pw_encrypt(u+1, pp, 1); - if (strcmp(cipher, pp) == 0) + char *encrypted = pw_encrypt(u+1, ++pp, 1); + int r = strcmp(encrypted, pp); + free(encrypted); + if (r == 0) goto set_remoteuser_var; /* Ok */ /* unauthorized */ continue; |