Potential Exploitation of CVE-2025-4427/4428 Ivanti EPMM Pre-Auth RCE

 1title: Potential Exploitation of CVE-2025-4427/4428 Ivanti EPMM Pre-Auth RCE
 2id: 41956f7c-7a6b-46d6-b6bb-da6eb2e83fbe
 3status: experimental
 4description: |
 5    Detects potential exploitation of a chained vulnerability attack targeting Ivanti EPMM 12.5.0.0.
 6    CVE-2025-4427 allows unauthenticated access to protected API endpoints via an authentication bypass,
 7    which can then be leveraged to trigger CVE-2025-4428 — a remote code execution vulnerability through
 8    template injection. This sequence enables unauthenticated remote code execution, significantly increasing
 9    the impact of exploitation.    
10references:
11    - https://labs.watchtowr.com/expression-payloads-meet-mayhem-cve-2025-4427-and-cve-2025-4428/?123
12author: Swachchhanda Shrawan Poudel (Nextron Systems)
13date: 2025-05-20
14tags:
15    - attack.initial-access
16    - attack.t1190
17    - attack.execution
18    - attack.t1203
19    - cve.2025-4427
20    - cve.2025-4428
21    - detection.emerging-threats
22logsource:
23    category: webserver
24detection:
25    selection_uri:
26        cs-uri-stem|contains: '/mifs/rs/api/v2/featureusage'
27        cs-uri-query|contains: 'format='
28    selection_exploit_rce:
29        - cs-uri-query|contains|all:
30              - 'java.lang.Runtime'
31              - '.getMethod'
32              - 'getRuntime'
33              - '.exec('
34        - cs-uri-query|contains|all:
35              - 'java%2elang%2eRuntime' # java.lang.Runtime
36              - '%2egetMethod' # .getMethod
37              - '%2eexec%28' # .exec(
38        - cs-uri-query|contains:
39              - '%6a%61%76%61%2e%6c%61%6e%67%2e%52%75%6e%74%69%6d%65%65%28%29' # java.lang.Runtime
40              - '%67%65%74%52%75%6e%74%69%6d%65' # getRuntime
41              - '%2e%65%78%65%63%28' # .exec(
42    selection_exploit_template_injection:
43        cs-uri-query|contains:
44            - '{7*7}'
45            - '%7B7*7%7D'
46            - '%7b7%2a7%7d'
47    condition: selection_uri and 1 of selection_exploit_*
48falsepositives:
49    - Unknown
50level: high