diff options
Diffstat (limited to 'main/krb5/CVE-2016-3119.patch')
| -rw-r--r-- | main/krb5/CVE-2016-3119.patch | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/main/krb5/CVE-2016-3119.patch b/main/krb5/CVE-2016-3119.patch new file mode 100644 index 0000000000..4e94534e98 --- /dev/null +++ b/main/krb5/CVE-2016-3119.patch @@ -0,0 +1,38 @@ +From 08c642c09c38a9c6454ab43a9b53b2a89b9eef99 Mon Sep 17 00:00:00 2001 +From: Greg Hudson <ghudson@mit.edu> +Date: Mon, 14 Mar 2016 17:26:34 -0400 +Subject: [PATCH] Fix LDAP null deref on empty arg [CVE-2016-3119] + +In the LDAP KDB module's process_db_args(), strtok_r() may return NULL +if there is an empty string in the db_args array. Check for this case +and avoid dereferencing a null pointer. + +CVE-2016-3119: + +In MIT krb5 1.6 and later, an authenticated attacker with permission +to modify a principal entry can cause kadmind to dereference a null +pointer by supplying an empty DB argument to the modify_principal +command, if kadmind is configured to use the LDAP KDB module. + + CVSSv2 Vector: AV:N/AC:H/Au:S/C:N/I:N/A:C/E:H/RL:OF/RC:ND + +ticket: 8383 (new) +target_version: 1.14-next +target_version: 1.13-next +tags: pullup +--- + src/plugins/kdb/ldap/libkdb_ldap/ldap_principal2.c | 1 + + 1 file changed, 1 insertion(+) + +diff --git a/src/plugins/kdb/ldap/libkdb_ldap/ldap_principal2.c b/src/plugins/kdb/ldap/libkdb_ldap/ldap_principal2.c +index 6e591e1..79c4cf0 100644 +--- a/src/plugins/kdb/ldap/libkdb_ldap/ldap_principal2.c ++++ b/src/plugins/kdb/ldap/libkdb_ldap/ldap_principal2.c +@@ -296,6 +296,7 @@ process_db_args(krb5_context context, char **db_args, xargs_t *xargs, + if (db_args) { + for (i=0; db_args[i]; ++i) { + arg = strtok_r(db_args[i], "=", &arg_val); ++ arg = (arg != NULL) ? arg : ""; + if (strcmp(arg, TKTPOLICY_ARG) == 0) { + dptr = &xargs->tktpolicydn; + } else { |