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Bug 2169985 - add krb5 principal failed with specific datetime string in pwexpire option (s390x, coredump)
Summary: add krb5 principal failed with specific datetime string in pwexpire option (s...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 9
Classification: Red Hat
Component: krb5
Version: 9.2
Hardware: s390x
OS: Unspecified
unspecified
medium
Target Milestone: rc
: ---
Assignee: Julien Rische
QA Contact: Filip Dvorak
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2023-02-15 10:23 UTC by Filip Dvorak
Modified: 2023-05-09 10:41 UTC (History)
2 users (show)

Fixed In Version: krb5-1.20.1-8.el9
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2023-05-09 08:25:27 UTC
Type: Bug
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Github krb5 krb5 pull 1290 0 None open Fix meridian type in kadmin datetime parser (s390x) 2023-02-21 09:53:00 UTC
Red Hat Issue Tracker FREEIPA-9457 0 None None None 2023-02-15 10:24:15 UTC
Red Hat Issue Tracker RHELPLAN-148705 0 None None None 2023-02-15 10:24:19 UTC
Red Hat Product Errata RHSA-2023:2570 0 None None None 2023-05-09 08:25:29 UTC

Description Filip Dvorak 2023-02-15 10:23:42 UTC 
Description of problem:
Adding of a new user principal with a specific datetime string into krb5kdc failed on s390x.

Version-Release number of selected component (if applicable):
krb5-server-1.20.1-5.el9.s390x
RHEL9.2

How reproducible:


Steps to Reproduce:
1. set krb5 (kdc.conf was in a default conf.)

   sed -i "s/\[libdefaults\]/[libdefaults]\n default_realm = TEST.COM/" /etc/krb5.conf
   sed -i "s/\[realms\]/[realms]\n TEST.COM = {\n  kdc = $KDC_HostName\n  admin_server = $KDC_HostName\n }/" /etc/krb5.conf
   sed -i "s/\[domain_realm\]/[domain_realm]\n .$KDC_DomainName = TEST.COM\n $KDC_DomainName = TEST.COM/" /etc/krb5.conf

2. Create kdc db
kdb5_util create -s -r TEST.COM -P <passwd>

3. add user into db
kadmin.local -q "addprinc -pwexpire \"January 23, 2030 08:05am\" -pw <passwd> user"

Actual results:
kadmin.local:  addprinc -pwexpire "January 23, 2030 08:05am" -pw Secret123 user_whole_datetime.COM
Aborted (core dumped)


Expected results:
user should be created
Comment 2 Julien Rische 2023-02-15 10:54:01 UTC 
The cause seems to be an invalid value assigned to yyMeridian in the Yacc-generated source file:

===
Hardware watchpoint 2: yyMeridian

Old value = MER24
New value = (MERpm | unknown: 0x4)
getdate_yyparse () at y.tab.c:1428
1428        break;
(gdb) l
1423                yyMinutes = (yyvsp[-1].Number);
1424                yySeconds = 0;
1425                yyMeridian = (yyvsp[0].Meridian);
1426            }
1427    #line 1428 "y.tab.c"
1428        break;
1429
1430      case 12: /* time: tUNUMBER ':' tUNUMBER tSNUMBER  */
1431    #line 231 "getdate.y"
1432                                             {
(gdb) bt
#0  getdate_yyparse () at y.tab.c:1428
#1  0x000002aa00009fc8 in get_date_rel (p=<optimized out>, nowtime=<optimized out>) at getdate.y:950
#2  0x000002aa0000acfa in parse_date (now=<optimized out>, str=0x3ffffffa24a "January 23, 2030 08:05am") at kadmin.c:162
#3  kadmin_parse_princ_args (argc=<optimized out>, argv=0x2aa000bb4e0, oprinc=0x3ffffff9320, mask=0x3ffffff9318, pass=<optimized out>, randkey=<optimized out>, nokey=<optimized out>, ks_tuple=<optimized out>, n_ks_tuple=<optimized out>, caller=<optimized out>) at kadmin.c:1039
#4  0x000002aa0000b0e8 in kadmin_addprinc (argc=<optimized out>, argv=<optimized out>) at kadmin.c:1209
#5  0x000003fff7e82922 in really_execute_command () from /lib64/libss.so.2
#6  0x000003fff7e837ba in ss_execute_line () from /lib64/libss.so.2
#7  0x000002aa00004fd4 in main (argc=<optimized out>, argv=<optimized out>) at ss_wrapper.c:66
===
Comment 5 Julien Rische 2023-02-21 09:53:00 UTC 
The reason was an invalid type for meridian suffices in the YACC file. This regression was probably introduced in:
https://github.com/krb5/krb5/commit/d3356bc42191c1896ab06835a2fb245e00471420

Upstream pull request:
https://github.com/krb5/krb5/pull/1290
Comment 12 errata-xmlrpc 2023-05-09 08:25:27 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Moderate: krb5 security, bug fix, and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2023:2570
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