BADFUNC.CRYPT : cryptの使用

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脆弱な暗号であるため、セキュアなアプリケーションでは信頼されない crypt() を使用しています。

クラス名

Use of crypt

日本語クラス名

cryptの使用

クラス分類

セキュリティ (security)

ニーモニック

BADFUNC.CRYPT

カテゴリー

CWE	CWE:242	Use of Inherently Dangerous Function
	CWE:326	Inadequate Encryption Strength
	CWE:327	Use of a Broken or Risky Cryptographic Algorithm
	CWE:328	Use of Weak Hash
	CWE:330	Use of Insufficiently Random Values
	CWE:338	Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
	CWE:676	Use of Potentially Dangerous Function
DISA-6r1	DISA-6r1:V-222397	The application must implement cryptographic mechanisms to protect the integrity of remote access sessions.
	DISA-6r1:V-222570	The application must utilize FIPS-validated cryptographic modules when signing application components.
	DISA-6r1:V-222571	The application must utilize FIPS-validated cryptographic modules when generating cryptographic hashes.
	DISA-6r1:V-222572	The application must utilize FIPS-validated cryptographic modules when protecting unclassified information that requires cryptographic protection.
	DISA-6r1:V-222583	The application must use the Federal Information Processing Standard (FIPS) 140-2-validated cryptographic modules and random number generator if the application implements encryption, key exchange, digital signature, and hash functionality.
	DISA-6r1:V-222589	The application must use appropriate cryptography in order to protect stored DoD information when required by the information owner or DoD policy.
DISA-5r3	DISA-5r3:V-69259	The application must implement cryptographic mechanisms to protect the integrity of remote access sessions.
	DISA-5r3:V-70191	The application must utilize FIPS-validated cryptographic modules when signing application components.
	DISA-5r3:V-70193	The application must utilize FIPS-validated cryptographic modules when generating cryptographic hashes.
	DISA-5r3:V-70195	The application must utilize FIPS-validated cryptographic modules when protecting unclassified information that requires cryptographic protection.
	DISA-5r3:V-70217	The application must use the Federal Information Processing Standard (FIPS) 140-2-validated cryptographic modules and random number generator if the application implements encryption, key exchange, digital signature, and hash functionality.
	DISA-5r3:V-70229	The application must use appropriate cryptography in order to protect stored DoD information when required by the information owner or DoD policy.
DISA-4r3	DISA-4r3:V-69259	The application must implement cryptographic mechanisms to protect the integrity of remote access sessions.
	DISA-4r3:V-70191	The application must utilize FIPS-validated cryptographic modules when signing application components.
	DISA-4r3:V-70193	The application must utilize FIPS-validated cryptographic modules when generating cryptographic hashes.
	DISA-4r3:V-70195	The application must utilize FIPS-validated cryptographic modules when protecting unclassified information that requires cryptographic protection.
	DISA-4r3:V-70217	The application must use the Federal Information Processing Standard (FIPS) 140-2-validated cryptographic modules and random number generator if the application implements encryption, key exchange, digital signature, and hash functionality.
	DISA-4r3:V-70229	The application must use appropriate cryptography in order to protect stored DoD information when required by the information owner or DoD policy.
DISA-3r10	DISA-3r10:V-6135	The designer will ensure the appropriate cryptography is used to protect stored DoD information if required by the information owner.
	DISA-3r10:V-6137	The designer will ensure the application uses the Federal Information Processing Standard (FIPS) 140-2 validated cryptographic modules and random number generator if the application implements encryption, key exchange, digital signature, and hash functionality.
OWASP-2017	OWASP-2017:A2	Broken authentication
	OWASP-2017:A3	Sensitive data exposure
	OWASP-2017:A5	Broken access control
	OWASP-2017:A9	Using components with known vulnerabilities
OWASP-2021	OWASP-2021:A1	Broken access control
	OWASP-2021:A2	Cryptographic failures
	OWASP-2021:A6	Vulnerable and outdated components
	OWASP-2021:A7	Identification and authorization failures

対応言語

C および C++ で利用可能です。

有効/無効設定

このワーニングクラスのチェックはデフォルトで有効になっています。チェックを無効にするにはプロジェクト設定ファイル（configuration file）に以下の WARNING_FILTER ルールを追加してください。

WARNING_FILTER += discard class="Use of crypt"

Cryptlib や OpenSSL の様な、より強力な暗号ツールを使用してください。

このクラスは一般テンプレート設定ファイルで BAD_FUNCTION_* ルールセットによって実装されています。

設定ファイルの以下のパラメータがこのワーニングクラスのチェックに影響します。

BADFUNC.CRYPT : cryptの使用

要旨

プロパティ

解決法

関連のある設定ファイルパラメータ