Sigma Rule Library

CVE-2020-10148 SolarWinds Orion API Auth Bypass

Detects CVE-2020-10148 SolarWinds Orion API authentication bypass attempts

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Detection logic

selection

cs-uri-query|contains:
  - /WebResource.axd
  - /ScriptResource.axd
  - /i18n.ashx
  - /Skipi18n

selection2

cs-uri-query|contains:
  - /SolarWinds/
  - /api/

valid_request_1

cs-uri-query|contains: Orion/Skipi18n/Profiler/

valid_request_2

cs-uri-query|contains:
  - css.i18n.ashx
  - js.i18n.ashx

Condition

all of selection* and not 1 of valid_request_*

Raw YAML

title: CVE-2020-10148 SolarWinds Orion API Auth Bypass
id: 5a35116f-43bc-4901-b62d-ef131f42a9af
status: test
description: Detects CVE-2020-10148 SolarWinds Orion API authentication bypass attempts
references:
    - https://kb.cert.org/vuls/id/843464
author: Bhabesh Raj, Tim Shelton
date: 2020-12-27
modified: 2023-01-02
tags:
    - attack.initial-access
    - attack.t1190
    - cve.2020-10148
    - detection.emerging-threats
logsource:
    category: webserver
detection:
    selection:
        cs-uri-query|contains:
            - '/WebResource.axd'
            - '/ScriptResource.axd'
            - '/i18n.ashx'
            - '/Skipi18n'
    selection2:
        cs-uri-query|contains:
            - '/SolarWinds/'
            - '/api/'
    valid_request_1:
        cs-uri-query|contains: 'Orion/Skipi18n/Profiler/'
    valid_request_2:
        cs-uri-query|contains:
            - 'css.i18n.ashx'
            - 'js.i18n.ashx'
    condition: all of selection* and not 1 of valid_request_*
falsepositives:
    - Unknown
level: critical

False positives

  • Unknown

References

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