CWE-645
Overly Restrictive Account Lockout Mechanism
2008-01-30
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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: Overly Restrictive Account Lockout Mechanism
The product contains an account lockout protection mechanism, but the mechanism is too restrictive and can be triggered too easily, which allows attackers to deny service to legitimate users by causing their accounts to be locked out.
一般情報
背景の詳細
導入モード
Architecture and Design : COMMISSION: This weakness refers to an incorrect design related to 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 |
|---|---|---|
| Availability | DoS: Resource Consumption (Other) 注記：An attacker could lock users out of their accounts by causing the account lockout mechanism to trigger, e.g. by attempting many logins. This could deny service to legitimate system users. |
潜在的な緩和策
Phases : Architecture and DesignImplement more intelligent password throttling mechanisms such as those that take IP address into account, in addition to the login name.
Phases : Architecture and Design
Implement a lockout timeout that grows as the number of incorrect login attempts goes up, eventually resulting in a complete lockout.
Phases : Architecture and Design
Consider alternatives to account lockout that would still be effective against password brute force attacks, such as presenting the user machine with a puzzle to solve (making it do some computation).
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-2 | Inducing Account Lockout
An attacker leverages the security functionality of the system aimed at thwarting potential attacks to launch a denial of service attack against a legitimate system user. Many systems, for instance, implement a password throttling mechanism that locks an account after a certain number of incorrect log in attempts. An attacker can leverage this throttling mechanism to lock a legitimate user out of their own account. The weakness that is being leveraged by an attacker is the very security feature that has been put in place to counteract attacks. |
登録情報
| 名前 | 組織 | 日付 | リリース日 | Version |
|---|---|---|---|---|
| Evgeny Lebanidze | Cigital | Draft 8 |
変更履歴
| 名前 | 組織 | 日付 | コメント |
|---|---|---|---|
| CWE Content Team | MITRE | updated Common_Consequences, Enabling_Factors_for_Exploitation, Relationships | |
| CWE Content Team | MITRE | updated Description | |
| CWE Content Team | MITRE | updated Common_Consequences | |
| CWE Content Team | MITRE | updated Relationships | |
| CWE Content Team | MITRE | updated Potential_Mitigations | |
| CWE Content Team | MITRE | updated Relationships | |
| CWE Content Team | MITRE | updated Applicable_Platforms, Demonstrative_Examples, Description, Enabling_Factors_for_Exploitation, Modes_of_Introduction, Observed_Examples, 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 Relationships | |
| CWE Content Team | MITRE | updated Mapping_Notes | |
| CWE Content Team | MITRE | updated Weakness_Ordinalities | |
| CWE Content Team | MITRE | updated Background_Details, Common_Consequences, Description, Potential_Mitigations |
