Cool Exploit Kit Remove Support of Java CVE-2012-1723

Reverse Engineering, , , ,

Beginning November, @Kafeine discovered that Cool EK (Exploit Kit) had integrate an exploit for a Oracle Java vulnerability fixed in 7U9. The new exploit was exploiting CVE-2012-5076 vulnerability through the “new.jar” file.

November version of Cool EK was supporting :

The following diagram describe you the way November version of Cool EK was working.

Since few days, Cool EK has involve by removing support of Oracle Java CVE-2012-1723 vulnerability, replacing “new.jar” file with a “java.php” streamed file. The new “java.php” is only catched by 3/44 anti-viruses on VirusTotal. November version, aka “new.jar” was catched by 28/46 anti-viruses on VirusTotal.

In November version “file.jar” requested “myfile.dll” through “/r/f.php?k=1&e=0&f=0” request and “new.jar” requested the same DLL file through “/r/f.php?k=2&e=0&f=0” request. All these requests have been replaced, in the December version, with a unique request to “/r/f.php?k=1“.

The following diagram describe you the way December version of Cool EK is working.

Gong Da / Gondad Exploit Pack Add Adobe Flash CVE-2012-1535 Support

Reverse Engineering, , , , ,

Gong Da exploit kit is involving, after integration of the CVE-2012-5076 Java vulnerability (Java Applet JAX-WS) one week ago, the EK is now preparing integration for Adobe Flash vulnerability CVE-2012-1535 fixed in APSB12-18 patch.

This new version was discovered on “hxxp://coa.ains.co.kr/css/css.html” and on “hxxp://www.dcpccdrw.com/asdf/index.html” web sites who is actually still online.

“coa.ains.co.kr” seem to be a legit web site and is hosted on 221.143.50.201, AS9318, in South Korea. “dcpccdrw.com” is hosted on 174.37.172.69, AS36351, in US. “dcpccdrw.com” domain name was created the 2012-11-23, through name.com registrar, for “tao wen ([email protected])“.

“index.html” and “css.html” file containing JavaScript code are obfuscated by “JSXX VIP JS Obfuscator“.

After de-obfuscation of the HTML files you can see that Gong Da Pack has involve to the following diagram.

VMware Security Advisory VMSA-2012-0016 Review

Vulnerability Management

VMware has release,the 15 November 2012, one security advisory VMSA-2012-0016 concerning VMware vSphere API and ESX service console.

VMware vSphere API denial of service vulnerability

The VMware vSphere API is affected by one vulnerability, CVE-2012-5703, with a 5.0 CVSS base score. The vulnerability was discovered and privately reported by Sebastián Tullo of Core Security Technologies. ESXi and ESX 4.1 are affected by this vulnerability.

VMware vSphere API denial of service vulnerability

ESX 4.1 bind-libs and bind-utils packages have been updated in order to fix multiples vulnerabilities. CVE-2012-1033 has a 5.0 CVSS base score  , CVE-2012-1667 has a 8.5 CVSS base score and CVE-2012-3817 has a 7.8 CVSS base score. ESX 4.0 is affected and the patch will be released further.

Update to ESX service console python packages

ESX 4.1 python and python-libs packages have been updated in order to fix multiples vulnerabilities. CVE-2011-4940 has a 2.6 CVSS base score, CVE-2011-4944 has a 1.9 CVSS base score and CVE-2012-1150 has a 5.0 CVSS base score. ESX 4.0 is affected but no patch is planned.

Update to ESX service console expat package

ESX 4.1 expat package has been updated in order to fix two vulnerabilities. CVE-2012-0876 has a 4.3 CVSS base score and CVE-2012-1148 has a 5.0 CVSS base score. ESX 4.0 is affected but no patch is planned.

Update to ESX service console nspr and nss packages

ESX 4.1 nspr and nss packages have been updated in order to fix two vulnerabilities. CVE-2012-0441 has a 5.0 CVSS base score and this patch also resolves a certificate trust issue caused by a fraudulent DigiNotar root certificate. ESX 4.0 is affected and the patch will be released further.

Gong Da / Gondad Exploit Pack Add Java CVE-2012-5076 support

Reverse Engineering, , , , ,

You may have read my first blog post regarding the evolutions of Gong Da exploit kit, who has involve in a more complex EK by supporting most of the latest Oracle Java vulnerabilities like CVE-2011-3544 (Oracle Java Rhino exploit), CVE-2012-4681 (Oracle Java August 0day), CVE-2012-0507 (another Oracle Java exploit), CVE-2012-1723 (another Oracle Java exploit) and CVE-2012-1889 (Microsoft XML Core Services). Some previous versions of Gong Da EK had also support for CVE-2011-2140 (Adobe Flash Player) and CVE-2012-0003 (Windows Media), but it seem that the new version don’t use them anymore.

After Cool EK and BlackHole EK, Gong Da EK has integrate the exploitation of the Java vulnerability aka CVE-2012-5076 (Java Applet JAX-WS). This vulnerability, patched in version 7U9 of Oracle Java is affecting all version of Oracle Java from 7 to 7U7.

This new version was discovered on “hxxp://rdp.nhgdeerw.com/rdp/index.html” a web site how is actually still online.

“rdp.nhgdeerw.com” is hosted on 173.208.189.170, AS32097, in US and “wangmazz.com” domain name was created the 2012-11-17, through name.com registrar, for “tao we ([email protected])“.

The “index.html” file containing JavaScript code obfuscated by “JSXX VIP JS Obfuscator“ is recognized only by 8 on 44 anti-viruses on VirusTotal.com.

/*Encrypt By ndtw.wmdottw.com’s JSXX 0.44 VIP*/

After de-obfuscation of the “index.html” file you can see that Gong Da Pack has involve to the following diagram.

Here under some information s regarding the different files:

  • MWCxT0.jpg (aka CVE-2012-5076) : 2/44 on VirusTotal.com
  • aWxsX0.jpg (aka CVE-2011-3544) : 7/44 on VirusTotal.com
  • kCyrwe1.jpg (aka CVE-2012-0507) : 10/44 on VirusTotal.com
  • RQnRD3.jpg (aka CVE-2012-1723) : 21/44 on VirusTotal.com
  • pujF8.jpg (aka CVE-2012-4681) : 28/44 on VirusTotal.com