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Add security rules for detecting hard-coded secrets in C# and Python #100

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Add security rules for detecting hard-coded secrets in C# and Python #100

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38580c0
python-peewee-mysql-hardcoded-secret-python
Dec 9, 2024
2854ffc
networkcredential-hardcoded-secret-csharp
Dec 9, 2024
36c597f
python-peewee-pg-empty-password-python
Dec 9, 2024
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238 changes: 238 additions & 0 deletions rules/csharp/security/networkcredential-hardcoded-secret-csharp.yml
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Original file line number Diff line number Diff line change
@@ -0,0 +1,238 @@
id: networkcredential-hardcoded-secret-csharp
language: csharp
severity: warning
message: >-
A secret is hard-coded in the application. Secrets stored in source
code, such as credentials, identifiers, and other types of sensitive data,
can be leaked and used by internal or external malicious actors. Use
environment variables to securely provide credentials and other secrets or
retrieve them from a secure vault or Hardware Security Module (HSM).
note: >-
[CWE-798]: Use of Hard-coded Credentials
[OWASP A07:2021]: Identification and Authentication Failures
[REFERENCES]
https://cheatsheetseries.owasp.org/cheatsheets/Secrets_Management_Cheat_Sheet.html
utils:
match_object_creation_expression:
kind: object_creation_expression
all:
- has:
stopBy: end
kind: identifier
field: type
regex: "^NetworkCredential$"
- has:
stopBy: end
kind: argument_list
field: arguments
all:
- has:
stopBy: end
kind: argument
has:
stopBy: end
kind: string_literal
has:
stopBy: end
kind: string_literal_content
not:
precedes:
stopBy: end
kind: argument

match_assignment_expression:
kind: assignment_expression
all:
- has:
stopBy: end
kind: member_access_expression
all:
- has:
stopBy: end
kind: identifier
field: expression
pattern: $R
- has:
stopBy: end
kind: identifier
field: name
regex: "^Password$"
- has:
stopBy: end
kind: string_literal
has:
stopBy: end
kind: string_literal_content
inside:
stopBy: end
kind: expression_statement
follows:
stopBy: end
kind: local_declaration_statement
all:
- has:
stopBy: end
kind: variable_declaration
has:
stopBy: end
kind: identifier
field: type
regex: "^NetworkCredential$"
- has:
stopBy: end
kind: variable_declarator
has:
stopBy: end
kind: identifier
field: name
pattern: $R
- has:
stopBy: end
kind: object_creation_expression
all:
- has:
stopBy: end
kind: identifier
field: type
- has:
stopBy: end
kind: argument_list
field: arguments
match_object_creation_expression_above_instance:
kind: object_creation_expression
all:
- has:
stopBy: end
kind: identifier
field: type
regex: "^NetworkCredential$"
- has:
stopBy: end
kind: argument_list
field: arguments
all:
- has:
stopBy: end
kind: argument
has:
stopBy: end
kind: string_literal
has:
stopBy: end
kind: string_literal_content
- has:
stopBy: end
kind: argument
has:
stopBy: end
kind: identifier
pattern: $U
inside:
stopBy: end
kind: expression_statement
follows:
stopBy: end
kind: local_declaration_statement
all:
- has:
stopBy: end
kind: variable_declaration
- has:
stopBy: end
kind: variable_declarator
has:
stopBy: end
kind: identifier
pattern: $U
- has:
stopBy: end
kind: string_literal
has:
stopBy: end
kind: string_literal_content
match_object_creation_expression_above_instances:
kind: assignment_expression
all:
- has:
stopBy: end
kind: member_access_expression
all:
- has:
stopBy: end
kind: identifier
field: expression
pattern: $R
- has:
stopBy: end
kind: identifier
field: name
regex: "^Password$"
- has:
kind: identifier
pattern: $U
inside:
stopBy: end
kind: expression_statement
follows:
stopBy: end
kind: local_declaration_statement
all:
- has:
stopBy: end
kind: variable_declaration
has:
stopBy: end
field: type
kind: predefined_type
- has:
stopBy: end
kind: variable_declarator
has:
stopBy: end
kind: identifier
field: name
pattern: $U
- has:
stopBy: end
kind: string_literal
has:
stopBy: end
kind: string_literal_content
follows:
stopBy: end
kind: local_declaration_statement
all:
- has:
stopBy: end
kind: variable_declaration
has:
stopBy: end
kind: identifier
field: type
regex: "^NetworkCredential$"
- has:
stopBy: end
kind: variable_declarator
has:
stopBy: end
kind: identifier
field: name
pattern: $R
- has:
stopBy: end
kind: object_creation_expression
all:
- has:
stopBy: end
field: type
kind: identifier
- has:
stopBy: end
field: arguments
kind: argument_list
rule:
any:
- matches: match_object_creation_expression
- matches: match_assignment_expression
- matches: match_object_creation_expression_above_instance
- matches: match_object_creation_expression_above_instances
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