CWE-347
Improper Verification of Cryptographic Signature
2006-07-19
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特定のCWEの通知
特定のCWEの変更情報をいち早くお届けします。
名前: Improper Verification of Cryptographic Signature
The product does not verify, or incorrectly verifies, the cryptographic signature for data.
一般情報
導入モード
Architecture and DesignImplementation : REALIZATION: This weakness is caused during implementation of an architectural security tactic.
適用可能なプラットフォーム
言語
クラス： Not Language-Specific (Undetermined)一般的な結果
| スコープ | 影響 | 可能性 |
|---|---|---|
| Access Control Integrity Confidentiality | Gain Privileges or Assume Identity, Modify Application Data, Execute Unauthorized Code or Commands 注記：An attacker could gain access to sensitive data and possibly execute unauthorized code. |
観察された例
| 参考文献 | 説明 |
|---|---|
CVE-2002-1796 | Does not properly verify signatures for "trusted" entities. |
CVE-2005-2181 | Insufficient verification allows spoofing. |
CVE-2005-2182 | Insufficient verification allows spoofing. |
CVE-2002-1706 | Accepts a configuration file without a Message Integrity Check (MIC) signature. |
検出方法
Automated Static Analysis
Automated static analysis, commonly referred to as Static Application Security Testing (SAST), can find some instances of this weakness by analyzing source code (or binary/compiled code) without having to execute it. Typically, this is done by building a model of data flow and control flow, then searching for potentially-vulnerable patterns that connect "sources" (origins of input) with "sinks" (destinations where the data interacts with external components, a lower layer such as the OS, etc.)有効性 : High
脆弱性マッピングノート
理由 : This CWE entry is at the Base level of abstraction, which is a preferred level of abstraction for mapping to the root causes of vulnerabilities.コメント : Carefully read both the name and description to ensure that this mapping is an appropriate fit. Do not try to 'force' a mapping to a lower-level Base/Variant simply to comply with this preferred level of abstraction.
関連する攻撃パターン
| CAPEC ID | 攻撃パターン名 |
|---|---|
| CAPEC-463 | Padding Oracle Crypto Attack
An adversary is able to efficiently decrypt data without knowing the decryption key if a target system leaks data on whether or not a padding error happened while decrypting the ciphertext. A target system that leaks this type of information becomes the padding oracle and an adversary is able to make use of that oracle to efficiently decrypt data without knowing the decryption key by issuing on average 128*b calls to the padding oracle (where b is the number of bytes in the ciphertext block). In addition to performing decryption, an adversary is also able to produce valid ciphertexts (i.e., perform encryption) by using the padding oracle, all without knowing the encryption key. |
| CAPEC-475 | Signature Spoofing by Improper Validation
An adversary exploits a cryptographic weakness in the signature verification algorithm implementation to generate a valid signature without knowing the key. |
登録情報
| 名前 | 組織 | 日付 | リリース日 | Version |
|---|---|---|---|---|
| PLOVER | Draft 3 |
変更履歴
| 名前 | 組織 | 日付 | コメント |
|---|---|---|---|
| Sean Eidemiller | Cigital | added/updated demonstrative examples | |
| Eric Dalci | Cigital | updated Time_of_Introduction | |
| CWE Content Team | MITRE | updated Relationships, Taxonomy_Mappings | |
| CWE Content Team | MITRE | updated Description, Name | |
| CWE Content Team | MITRE | updated Common_Consequences, Relationships, Taxonomy_Mappings | |
| CWE Content Team | MITRE | updated Common_Consequences, Related_Attack_Patterns, Relationships, Taxonomy_Mappings | |
| CWE Content Team | MITRE | updated Demonstrative_Examples, Relationships | |
| CWE Content Team | MITRE | updated Relationships | |
| CWE Content Team | MITRE | updated Relationships | |
| CWE Content Team | MITRE | updated Applicable_Platforms, Modes_of_Introduction, Relationships | |
| CWE Content Team | MITRE | updated Taxonomy_Mappings | |
| CWE Content Team | MITRE | updated Relationships | |
| CWE Content Team | MITRE | updated Related_Attack_Patterns | |
| CWE Content Team | MITRE | updated Relationships | |
| CWE Content Team | MITRE | updated Description | |
| CWE Content Team | MITRE | updated Detection_Factors, Relationships, Taxonomy_Mappings | |
| CWE Content Team | MITRE | updated Mapping_Notes | |
| CWE Content Team | MITRE | updated Diagram | |
| CWE Content Team | MITRE | updated Relationships, Weakness_Ordinalities |
