diff options
Diffstat (limited to 'source4/dsdb')
| -rw-r--r-- | source4/dsdb/samdb/ldb_modules/acl.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/source4/dsdb/samdb/ldb_modules/acl.c b/source4/dsdb/samdb/ldb_modules/acl.c index 98bf43d21e..49152d418a 100644 --- a/source4/dsdb/samdb/ldb_modules/acl.c +++ b/source4/dsdb/samdb/ldb_modules/acl.c @@ -477,6 +477,10 @@ static int acl_validate_spn_value(TALLOC_CTX *mem_ctx, return LDB_ERR_CONSTRAINT_VIOLATION; } + if (principal->name.name_string.len < 2) { + goto fail; + } + instanceName = principal->name.name_string.val[1]; serviceType = principal->name.name_string.val[0]; realm = krb5_principal_get_realm(krb_ctx, principal); @@ -509,7 +513,8 @@ static int acl_validate_spn_value(TALLOC_CTX *mem_ctx, } /* instanceName can be samAccountName without $ or dnsHostName * or "ntds_guid._msdcs.forest_domain for DC objects */ - if (strncasecmp(instanceName, samAccountName, strlen(samAccountName) - 1) == 0) { + if (strlen(instanceName) == (strlen(samAccountName) - 1) + && strncasecmp(instanceName, samAccountName, strlen(samAccountName) - 1) == 0) { goto success; } else if (strcasecmp(instanceName, dnsHostName) == 0) { goto success; |