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ELMAH Exposure

ID: elmah-log-file

Severity: high

Author: shine,idealphase

Tags: logs,elmah,exposure

ELMAH (Error Logging Modules and Handlers) is an application-wide error logging facility that is completely pluggable. It can be dynamically added to a running ASP.NET web application, or even all ASP.NET web applications on a machine, without any need for re-compilation or re-deployment. In some cases, the logs expose ASPXAUTH cookies allowing to hijack a logged in administrator session.

id: elmah-log-file
info:
name: ELMAH Exposure
author: shine,idealphase
severity: high
description: |
ELMAH (Error Logging Modules and Handlers) is an application-wide error logging facility that is completely pluggable. It can be dynamically added to a running ASP.NET web application, or even all ASP.NET web applications on a machine, without any need for re-compilation or re-deployment. In some cases, the logs expose ASPXAUTH cookies allowing to hijack a logged in administrator session.
reference:
- https://code.google.com/archive/p/elmah/
- https://www.troyhunt.com/aspnet-session-hijacking-with-google/
metadata:
verified: true
max-request: 2
tags: logs,elmah,exposure
http:
- method: GET
path:
- "{{BaseURL}}/elmah"
- "{{BaseURL}}/elmah.axd"
stop-at-first-match: true
host-redirects: true
max-redirects: 2
matchers-condition: and
matchers:
- type: word
words:
- 'Error Log for'
- type: status
status:
- 200
# digest: 4a0a00473045022100f98d96e5766faf9ca063720dd9a2a66a1776f003c4c3bfa4536017b655c8c68102205670c90de36fa15b997815ae11f2fcae8326df52313c36eccc7419b08952c0ba:922c64590222798bb761d5b6d8e72950

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

Terminal window
$ nuclei -u "URL" -t "http/exposures/logs/elmah-log-file.yaml"

View on Github