CWE-325
Missing Cryptographic Step
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: Missing Cryptographic Step
The product does not implement a required step in a cryptographic algorithm, resulting in weaker encryption than advertised by the algorithm.
一般情報
導入モード
Implementation : Developers sometimes omit "expensive" (resource-intensive) steps in order to improve performance, especially in devices with limited memory or slower CPUs. This step may be taken under a mistaken impression that the step is unnecessary for the cryptographic algorithm.Requirements : This issue may happen when the requirements for the cryptographic algorithm are not clearly stated.
適用可能なプラットフォーム
言語
クラス： Not Language-Specific (Undetermined)テクノロジー
クラス： Not Technology-Specific (Undetermined)一般的な結果
| スコープ | 影響 | 可能性 |
|---|---|---|
| Access Control | Bypass Protection Mechanism | |
| Confidentiality Integrity | Read Application Data, Modify Application Data | |
| Accountability Non-Repudiation | Hide Activities |
観察された例
| 参考文献 | 説明 |
|---|---|
CVE-2001-1585 | Missing challenge-response step allows authentication bypass using public key. |
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.)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-68 | Subvert Code-signing Facilities
Many languages use code signing facilities to vouch for code's identity and to thus tie code to its assigned privileges within an environment. Subverting this mechanism can be instrumental in an attacker escalating privilege. Any means of subverting the way that a virtual machine enforces code signing classifies for this style of attack. |
ノート
Overlaps incomplete/missing security check.Can be resultant.
参考文献
REF-1358
hmac_wrapper.svhttps://github.com/HACK-EVENT/hackatdac21/blob/main/piton/design/chip/tile/ariane/src/hmac/hmac_wrapper.sv#L41
REF-1359
HMAC HWIP Technical Specificationhttps://opentitan.org/book/hw/ip/hmac/
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 |
|---|---|---|---|
| Eric Dalci | Cigital | updated Time_of_Introduction | |
| CWE Content Team | MITRE | updated Description, Functional_Areas, Modes_of_Introduction, Relationships, Observed_Example, Relationship_Notes, Taxonomy_Mappings | |
| CWE Content Team | MITRE | updated Common_Consequences | |
| CWE Content Team | MITRE | updated Common_Consequences, 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 Relationships | |
| CWE Content Team | MITRE | updated Applicable_Platforms, Description, Relationships | |
| CWE Content Team | MITRE | updated Common_Consequences, Description, Modes_of_Introduction, Name | |
| CWE Content Team | MITRE | updated Relationships | |
| CWE Content Team | MITRE | updated Relationships, Time_of_Introduction | |
| CWE Content Team | MITRE | updated Mapping_Notes | |
| CWE Content Team | MITRE | updated Demonstrative_Examples, References | |
| CWE Content Team | MITRE | updated Detection_Factors, Relationships, Weakness_Ordinalities | |
| CWE Content Team | MITRE | updated Demonstrative_Examples, Relationships |
