https://bugs.openldap.org/show_bug.cgi?id=10321

          Issue ID: 10321
           Summary: slapd garbles userCertificate hex code
           Product: OpenLDAP
           Version: 2.6.7
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Keywords: needs_review
          Severity: normal
          Priority: ---
         Component: slapd
          Assignee: [email protected]
          Reporter: [email protected]
  Target Milestone: ---

I discovered an issue with how slapd handles hex encoded userCertificate;binary
values while testing identical setups between FreeIPA and OpenLDAP. It seems to
partially decode the hex, causing any search to fail. This was discovered when
using SSSD, but is reproducible with ldapsearch. Essentially, you run a query
like this using the hex encoded value of the certificate:

ldapsearch -H ldap://10.10.0.94 -D cn=admin,dc=nabasny,dc=com -b
"dc=nabasny,dc=com" -W
'(&(userCertificate;binary=\30\82\04\85\30\82\02\ed\a0\03\02\01\02\02\01\0d\30\0d\06\09\2a\86\48\86\f7\0d\01\01\0b\05\00\30\37\31\15\30\13\06\03\55\04\0a\0c\0c\46\52\45\45\49\50\41\2e\48\4f\4d\45\31\1e\30\1c\06\03\55\04\03\0c\15\43\65\72\74\69\66\69\63\61\74\65\20\41\75\74\68\6f\72\69\74\79\30\1e\17\0d\32\35\30\33\32\30\31\35\34\35\32\36\5a\17\0d\32\37\30\33\32\31\31\35\34\35\32\36\5a\30\26\31\15\30\13\06\03\55\04\0a\0c\0c\46\52\45\45\49\50\41\2e\48\4f\4d\45\31\0d\30\0b\06\03\55\04\03\0c\04\6a\61\6b\65\30\82\01\22\30\0d\06\09\2a\86\48\86\f7\0d\01\01\01\05\00\03\82\01\0f\00\30\82\01\0a\02\82\01\01\00\b9\b2\3b\be\d1\20\bd\f2\ba\69\e6\b6\e5\2d\13\b0\77\a6\59\69\50\76\4c\07\71\ce\ee\8f\41\ef\04\20\1b\8e\a5\f7\8a\96\0d\f1\89\a5\84\cd\2f\be\ff\9c\2a\b2\bf\99\20\ca\ae\fc\a2\16\df\40\5b\d4\5e\7b\51\a5\b0\dd\bc\e9\c4\b1\e7\89\7c\25\f2\4b\b0\08\09\bd\60\58\c1\8f\af\fb\2a\5e\90\69\37\27\40\61\62\bb\7a\b8\76\18\11\96\2e\45\54\26\b0\c7\ec\92\3c\72\90\52\1a\44\0f\69\5c\b4\f1\98\53\4e\15\86\33\1a\81\ee\70\63\ae\e4\c7\32\7f\92\14\71\9d\58\c0\7d\a1\20\dc\f5\f6\47\29\45\56\bd\a2\dd\eb\4a\17\f2\2a\72\6f\fd\0f\a3\7e\a0\96\de\02\f3\b2\d9\ac\fc\af\38\c9\7a\21\c3\1b\19\4c\bc\d8\11\48\22\cf\18\ec\17\85\51\e9\51\22\49\aa\89\1a\73\2b\8d\40\e9\a9\3a\dd\e8\6e\9b\27\45\09\fd\a4\88\f5\7c\4e\96\b7\82\cd\f6\e2\1e\08\53\38\af\f9\4d\55\9c\79\0f\32\d8\bb\85\83\08\c0\b9\f3\39\7f\b9\7b\a9\02\03\01\00\01\a3\82\01\2b\30\82\01\27\30\1f\06\03\55\1d\23\04\18\30\16\80\14\0d\6b\b6\82\13\0c\a2\9d\91\01\40\e8\59\d6\2b\ec\87\1a\f0\36\30\3e\06\08\2b\06\01\05\05\07\01\01\04\32\30\30\30\2e\06\08\2b\06\01\05\05\07\30\01\86\22\68\74\74\70\3a\2f\2f\69\70\61\2d\63\61\2e\66\72\65\65\69\70\61\2e\68\6f\6d\65\2f\63\61\2f\6f\63\73\70\30\0e\06\03\55\1d\0f\01\01\ff\04\04\03\02\04\f0\30\1c\06\03\55\1d\25\04\15\30\13\06\08\2b\06\01\05\05\07\03\01\06\07\2b\06\01\05\02\03\05\30\77\06\03\55\1d\1f\04\70\30\6e\30\6c\a0\34\a0\32\86\30\68\74\74\70\3a\2f\2f\69\70\61\2d\63\61\2e\66\72\65\65\69\70\61\2e\68\6f\6d\65\2f\69\70\61\2f\63\72\6c\2f\4d\61\73\74\65\72\43\52\4c\2e\62\69\6e\a2\34\a4\32\30\30\31\0e\30\0c\06\03\55\04\0a\0c\05\69\70\61\63\61\31\1e\30\1c\06\03\55\04\03\0c\15\43\65\72\74\69\66\69\63\61\74\65\20\41\75\74\68\6f\72\69\74\79\30\1d\06\03\55\1d\0e\04\16\04\14\e8\11\4b\36\86\c9\7c\a2\d7\4e\ff\7c\13\89\2b\38\8d\c4\ec\32\30\0d\06\09\2a\86\48\86\f7\0d\01\01\0b\05\00\03\82\01\81\00\58\af\2b\7e\fd\05\b9\46\8a\c7\b9\e4\96\42\47\2d\8f\17\01\8e\58\30\95\9c\be\e7\2d\a8\22\64\5e\fd\f5\ec\46\97\2d\88\bc\06\b0\e7\a3\77\a3\d0\b6\da\01\4f\73\f4\3d\c9\47\49\e2\d0\a0\e8\bd\a9\62\fd\6c\de\81\32\9a\33\d5\58\57\d8\c9\47\54\78\fa\69\20\49\11\c9\dc\4f\f4\bc\37\63\28\6a\fd\e2\f7\4b\0f\44\26\90\6c\22\c9\b8\ff\9a\36\05\a3\24\3c\58\73\6f\4b\17\2d\e3\22\30\aa\34\4e\2f\36\24\94\6a\24\9b\bf\ac\e5\23\33\f6\3f\cf\c7\dd\38\91\85\63\c0\61\55\5f\de\2b\e6\3d\13\4f\8c\6a\6a\1e\3b\0e\4a\8c\e9\c3\46\ef\02\bb\63\b7\09\9f\d8\5c\67\4c\c6\40\8f\1e\7e\c8\f0\89\4c\8f\f8\24\63\42\31\f9\5d\5b\2d\cb\78\c3\94\5f\3e\ca\b8\7b\68\9a\6a\09\0c\22\bd\da\39\9f\b7\0f\4f\20\a9\1a\de\d7\8a\31\af\a3\ac\14\d1\ba\90\b8\22\56\31\b1\52\78\73\6f\36\05\88\0b\56\31\fd\55\89\7d\55\8b\01\1d\58\0c\75\03\bd\7c\7b\05\c7\86\15\90\0c\f4\c6\91\d3\f6\73\e9\8f\1f\25\88\32\b2\cb\53\db\91\e4\8b\28\a1\22\7a\38\ac\f5\8b\32\51\d4\9e\d6\e1\15\0d\fb\8f\60\09\e5\0c\dd\d4\19\fe\f7\44\cd\ac\ff\82\94\16\f5\7d\19\57\30\79\96\4b\7b\61\d0\b8\c3\0c\1c\2f\89\7e\01\5e\a0\95\9a\aa\d3\e2\6d\d5\fa\2e\e8\57\5a\b3\45\23\17\40\c9\d3\92\9e\11\cc\c4\31\f2\e5\94\e3\8f\5e\d9\51\92\cd\46\77\33\c8\4b\50\84\73)(objectclass=posixAccount)(uid=*)(&(uidNumber=*)(!(uidNumber=0))))'

And slapd logs the query as:

Mar 20 19:54:01 ldap slapd[457]: conn=1058 op=3 SRCH
base="ou=people,dc=nabasny,dc=com" scope=2 deref=0
filter="(&(?userCertificate;binary=0\82\04\850\82\02\ED\A0\03\02\01\02\02\01\0D0\0D\06\09\2A\86H\86\F7\0D\01\01\0B\05\00071\150\13\06\03U\04\0A\0C\0CFREEIPA.HOME1\1E0\1C\06\03U\04\03\0C\15Certificate
Authority0\1E\17\0D250320154526Z\17\0D270321154526Z0&1\150\13\06\03U\04\0A\0C\0CFREEIPA.HOME1\0D0\0B\06\03U\04\03\0C\04jake0\82\01"0\0D\06\09\2A\86H\86\F7\0D\01\01\01\05\00\03\82\01\0F\000\82\01\0A\02\82\01\01\00\B9\B2;\BE\D1
\BD\F2\BAi\E6\B6\E5-\13\B0w\A6YiPvL\07q\CE\EE\8FA\EF\04
\1B\8E\A5\F7\8A\96\0D\F1\89\A5\84\CD/\BE\FF\9C\2A\B2\BF\99
\CA\AE\FC\A2\16\DF@[\D4^{Q\A5\B0\DD\BC\E9\C4\B1\E7\89|%\F2K\B0\08\09\BD`X\C1\8F\AF\FB\2A^\90i7'@ab\BBz\B8v\18\11\96.ET&\B0\C7\EC\92<r\90R\1AD\0Fi\5C\B4\F1\98SN\15\863\1A\81\EEpc\AE\E4\C72\7F\92\14q\9DX\C0}\A1
\DC\F5\F6G\29EV\BD\A2\DD\EBJ\17\F2\2Aro\FD\0F\A3~\A0\96\DE\02\F3\B2\D9\AC\FC\AF8\C9z!\C3\1B\19L\BC\D8\11H"\CF\18\EC\17\85Q\E9Q"I\AA\89\1As+\8D@\E9\A9:\DD\E8n\9B'E\09\FD\A4\88\F5|N\96\B7\82\CD\F6\E2\1E\08S8\AF\F9MU\9Cy\0F2\D8\BB\85\83\08\C0\B9\F39\7F\B9{\A9\02\03\01\00\01\A3\82\01+0\82\01'0\1F\06\03U\1D#\04\180\16\80\14\0Dk\B6\82\13\0C\A2\9D\91\01@\E8Y\D6+\EC\87\1A\F060>\06\08+\06\01\05\05\07\01\01\042000.\06\08+\06\01\05\05\070\01\86"http://ipa-ca.freeipa.home/ca/ocsp0\0E\06\03U\1D\0F\01\01\FF\04\04\03\02\04\F00\1C\06\03U\1D%\04\150\13\06\08+\06\01\05\05\07\03\01\06\07+\06\01\05\02\03\050w\06\03U\1D\1F\04p0n0l\A04\A02\860http://ipa-ca.freeipa.home/ipa/crl/MasterCRL.bin\A24\A42001\0E0\0C\06\03U\04\0A\0C\05ipaca1\1E0\1C\06\03U\04\03\0C\15Certificate
Authority0\1D\06\03U\1D\0E\04\16\04\14\E8\11K6\86\C9|\A2\D7N\FF|\13\89+8\8D\C4\EC20\0D\06\09\2A\86H\86\F7\0D\01\01\0B\05\00\03\82\01\81\00X\AF+~\FD\05\B9F\8A\C7\B9\E4\96BG-\8F\17\01\8EX0\95\9C\BE\E7-\A8"d^\FD\F5\ECF\97-\88\BC\06\B0\E7\A3w\A3\D0\B6\DA\01Os\F4=\C9GI\E2\D0\A0\E8\BD\A9b\FDl\DE\812\9A3\D5XW\D8\C9GTx\FAi
I\11\C9\DCO\F4\BC7c\28j\FD\E2\F7K\0FD&\90l"\C9\B8\FF\9A6\05\A3$<XsoK\17-\E3"0\AA4N/6$\94j$\9B\BF\AC\E5#3\F6?\CF\C7\DD8\91\85c\C0aU_\DE+\E6=\13O\8Cjj\1E;\0EJ\8C\E9\C3F\EF\02\BBc\B7\09\9F\D8\5CgL\C6@\8F\1E~\C8\F0\89L\8F\F8$cB1\F9][-\CBx\C3\94_>\CA\B8{h\9Aj\09\0C"\BD\DA9\9F\B7\0FO
\A9\1A\DE\D7\8A1\AF\A3\AC\14\D1\BA\90\B8"V1\B1Rxso6\05\88\0BV1\FDU\89}U\8B\01\1DX\0Cu\03\BD|{\05\C7\86\15\90\0C\F4\C6\91\D3\F6s\E9\8F\1F%\882\B2\CBS\DB\91\E4\8B\28\A1"z8\AC\F5\8B2Q\D4\9E\D6\E1\15\0D\FB\8F`\09\E5\0C\DD\D4\19\FE\F7D\CD\AC\FF\82\94\16\F5}\19W0y\96K{a\D0\B8\C3\0C\1C/\89~\01^\A0\95\9A\AA\D3\E2m\D5\FA.\E8WZ\B3E#\17@\C9\D3\92\9E\11\CC\C41\F2\E5\94\E3\8F^\D9Q\92\CDFw3\C8KP\84s)(objectClass=posixAccount)(uid=*)(&(uidNumber=*)(!(uidNumber=0))))"

Some of the hex has been decoded into readable strings, which causes the search
to fail.

Running the same search on FreeIPA with an identical user entry returns the
entry correctly.

I'm happy to provide more logs/details if needed.

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