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CVE-2022-2031 lib:krb5_wrap: Generate valid error codes in smb_krb5_mk_error()

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The error code passed in will be an offset from ERROR_TABLE_BASE_krb5,
so we need to subtract that before creating the error. Heimdal does this
internally, so it isn't needed there.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15047
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15049
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15074

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
This commit is contained in:
Joseph Sutton 2022-05-27 19:29:34 +12:00 committed by Jule Anger
parent f89e5eff5f
commit 4e2e767a78
2 changed files with 5 additions and 1 deletions
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2
lib/krb5_wrap/krb5_samba.c
View File

@ -237,7 +237,7 @@ krb5_error_code smb_krb5_mk_error(krb5_context context,
return code;
}
errpkt.error = error_code;
errpkt.error = error_code - ERROR_TABLE_BASE_krb5;
errpkt.text.length = 0;
if (e_text != NULL) {

4
selftest/knownfail_mit_kdc
View File

@ -437,9 +437,13 @@ samba.tests.krb5.as_canonicalization_tests.samba.tests.krb5.as_canonicalization_
# Kpasswd tests
#
^samba.tests.krb5.kpasswd_tests.samba.tests.krb5.kpasswd_tests.KpasswdTests.test_kpasswd_canonicalize_realm_case.ad_dc
^samba.tests.krb5.kpasswd_tests.samba.tests.krb5.kpasswd_tests.KpasswdTests.test_kpasswd_empty.ad_dc
^samba.tests.krb5.kpasswd_tests.samba.tests.krb5.kpasswd_tests.KpasswdTests.test_kpasswd_from_rodc.ad_dc
^samba.tests.krb5.kpasswd_tests.samba.tests.krb5.kpasswd_tests.KpasswdTests.test_kpasswd_no_canonicalize_realm_case.ad_dc
^samba.tests.krb5.kpasswd_tests.samba.tests.krb5.kpasswd_tests.KpasswdTests.test_kpasswd_no_seq_number.ad_dc
^samba.tests.krb5.kpasswd_tests.samba.tests.krb5.kpasswd_tests.KpasswdTests.test_kpasswd_non_initial.ad_dc
^samba.tests.krb5.kpasswd_tests.samba.tests.krb5.kpasswd_tests.KpasswdTests.test_kpasswd_ticket_lifetime.ad_dc
^samba.tests.krb5.kpasswd_tests.samba.tests.krb5.kpasswd_tests.KpasswdTests.test_kpasswd_ticket_requester_sid_tgs.ad_dc
^samba.tests.krb5.kpasswd_tests.samba.tests.krb5.kpasswd_tests.KpasswdTests.test_kpasswd_wrong_key.ad_dc
^samba.tests.krb5.kpasswd_tests.samba.tests.krb5.kpasswd_tests.KpasswdTests.test_kpasswd_wrong_key_server.ad_dc
^samba.tests.krb5.kpasswd_tests.samba.tests.krb5.kpasswd_tests.KpasswdTests.test_kpasswd_wrong_key_service.ad_dc