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ITS#8080 nssov: only allow root to become pwdmgr

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This commit is contained in:
Ryan Tandy 2015-03-16 04:44:21 +00:00 committed by Howard Chu
parent 7e3177070a
commit 957d4770eb
3 changed files with 20 additions and 6 deletions
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4
contrib/slapd-modules/nssov/nssov.c
View File

@ -369,11 +369,11 @@ static void handleconnection(nssov_info *ni,int sock,Operation *op)
case NSLCD_ACTION_SERVICE_ALL: (void)nssov_service_all(ni,fp,op); break;
case NSLCD_ACTION_SHADOW_BYNAME: if (uid==0) (void)nssov_shadow_byname(ni,fp,op); break;
case NSLCD_ACTION_SHADOW_ALL: if (uid==0) (void)nssov_shadow_all(ni,fp,op); break;
case NSLCD_ACTION_PAM_AUTHC: (void)pam_authc(ni,fp,op); break;
case NSLCD_ACTION_PAM_AUTHC: (void)pam_authc(ni,fp,op,uid); break;
case NSLCD_ACTION_PAM_AUTHZ: (void)pam_authz(ni,fp,op); break;
case NSLCD_ACTION_PAM_SESS_O: if (uid==0) (void)pam_sess_o(ni,fp,op); break;
case NSLCD_ACTION_PAM_SESS_C: if (uid==0) (void)pam_sess_c(ni,fp,op); break;
case NSLCD_ACTION_PAM_PWMOD: (void)pam_pwmod(ni,fp,op); break;
case NSLCD_ACTION_PAM_PWMOD: (void)pam_pwmod(ni,fp,op,uid); break;
case NSLCD_ACTION_CONFIG_GET: (void)nssov_config(ni,fp,op); break;
default:
Debug( LDAP_DEBUG_ANY,"nssov: invalid request id: %d",(int)action,0,0);

4
contrib/slapd-modules/nssov/nssov.h
View File

@ -239,11 +239,11 @@ int nssov_service_bynumber(nssov_info *ni,TFILE *fp,Operation *op);
int nssov_service_all(nssov_info *ni,TFILE *fp,Operation *op);
int nssov_shadow_byname(nssov_info *ni,TFILE *fp,Operation *op);
int nssov_shadow_all(nssov_info *ni,TFILE *fp,Operation *op);
int pam_authc(nssov_info *ni,TFILE *fp,Operation *op);
int pam_authc(nssov_info *ni,TFILE *fp,Operation *op,uid_t calleruid);
int pam_authz(nssov_info *ni,TFILE *fp,Operation *op);
int pam_sess_o(nssov_info *ni,TFILE *fp,Operation *op);
int pam_sess_c(nssov_info *ni,TFILE *fp,Operation *op);
int pam_pwmod(nssov_info *ni,TFILE *fp,Operation *op);
int pam_pwmod(nssov_info *ni,TFILE *fp,Operation *op,uid_t calleruid);
/* config initialization */
#define NSSOV_INIT(db) \

18
contrib/slapd-modules/nssov/pam.c
View File

@ -209,7 +209,7 @@ finish:
return rc;
}
int pam_authc(nssov_info *ni,TFILE *fp,Operation *op)
int pam_authc(nssov_info *ni,TFILE *fp,Operation *op,uid_t calleruid)
{
int32_t tmpint32;
int rc;
@ -263,6 +263,13 @@ int pam_authc(nssov_info *ni,TFILE *fp,Operation *op)
pi.authz = NSLCD_PAM_PERM_DENIED;
rc = NSLCD_PAM_PERM_DENIED;
goto finish;
} else if (calleruid != 0) {
Debug(LDAP_DEBUG_TRACE,"nssov_pam_authc(prelim check): %s\n",
"caller is not root", 0, 0);
ber_str2bv("only root may do that", 0, 0, &pi.msg);
pi.authz = NSLCD_PAM_PERM_DENIED;
rc = NSLCD_PAM_PERM_DENIED;
goto finish;
} else {
/* use pwdmgr dn */
ber_str2bv(ni->ni_pam_pwdmgr_dn.bv_val, 0, 0, &pi.dn);
@ -708,7 +715,7 @@ int pam_sess_c(nssov_info *ni,TFILE *fp,Operation *op)
return pam_sess(ni,fp,op,NSLCD_ACTION_PAM_SESS_C);
}
int pam_pwmod(nssov_info *ni,TFILE *fp,Operation *op)
int pam_pwmod(nssov_info *ni,TFILE *fp,Operation *op,uid_t calleruid)
{
struct berval npw;
int32_t tmpint32;
@ -770,6 +777,13 @@ int pam_pwmod(nssov_info *ni,TFILE *fp,Operation *op)
rc = NSLCD_PAM_PERM_DENIED;
goto done;
} else if (!ber_bvcmp(&pi.dn, &ni->ni_pam_pwdmgr_dn)) {
if (calleruid != 0) {
Debug(LDAP_DEBUG_TRACE,"nssov_pam_pwmod(): %s\n",
"caller is not root", 0, 0);
ber_str2bv("only root may do that", 0, 0, &pi.msg);
rc = NSLCD_PAM_PERM_DENIED;
goto done;
}
/* root user requesting pwmod, convert uid to dn */
pi.ispwdmgr = 1;
rc = pam_uid2dn(ni, op, &pi);