CWE-69
Improper Handling of Windows ::DATA Alternate Data Stream
2006-07-19
00h00 +00:00
00h00 +00:00
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 Handling of Windows ::DATA Alternate Data Stream
The product does not properly prevent access to, or detect usage of, alternate data streams (ADS).
一般情報
背景の詳細
導入モード
Implementation適用可能なプラットフォーム
言語
クラス： Not Language-Specific (Undetermined)オペレーティングシステム
クラス： Windows (Undetermined)一般的な結果
| スコープ | 影響 | 可能性 |
|---|---|---|
| Access Control Non-Repudiation Other | Bypass Protection Mechanism, Hide Activities, Other 注記：An attacker can use an ADS to hide information about a file (e.g. size, the name of the process) from a system or file browser tools such as Windows Explorer and 'dir' at the command line utility. Alternately, the attacker might be able to bypass intended access restrictions for the associated data fork. |
観察された例
| 参考文献 | 説明 |
|---|---|
CVE-1999-0278 | In IIS, remote attackers can obtain source code for ASP files by appending "::$DATA" to the URL. |
CVE-2000-0927 | Product does not properly record file sizes if they are stored in alternative data streams, which allows users to bypass quota restrictions. |
潜在的な緩和策
Phases : ImplementationEnsure that the source code correctly parses the filename to read or write to the correct stream.
検出方法
Automated Analysis
Software tools are capable of finding ADSs on your system.脆弱性マッピングノート
理由 : This CWE entry is at the Variant 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-168 | Windows ::DATA Alternate Data Stream
An attacker exploits the functionality of Microsoft NTFS Alternate Data Streams (ADS) to undermine system security. ADS allows multiple "files" to be stored in one directory entry referenced as filename:streamname. One or more alternate data streams may be stored in any file or directory. Normal Microsoft utilities do not show the presence of an ADS stream attached to a file. The additional space for the ADS is not recorded in the displayed file size. The additional space for ADS is accounted for in the used space on the volume. An ADS can be any type of file. ADS are copied by standard Microsoft utilities between NTFS volumes. ADS can be used by an attacker or intruder to hide tools, scripts, and data from detection by normal system utilities. Many anti-virus programs do not check for or scan ADS. Windows Vista does have a switch (-R) on the command line DIR command that will display alternate streams. |
ノート
This and similar problems exist because the same resource can have multiple identifiers that dictate which behavior can be performed on the resource.参考文献
REF-562
Windows NTFS Alternate Data StreamsDon Parker.
https://seclists.org/basics/2005/Feb/312
REF-7
Writing Secure CodeMichael Howard, David LeBlanc.
https://www.microsoftpressstore.com/store/writing-secure-code-9780735617223
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 Applicable_Platforms, Background_Details, Description, Relationships, Other_Notes, References, Taxonomy_Mappings | |
| CWE Content Team | MITRE | updated Description | |
| CWE Content Team | MITRE | updated Other_Notes, Theoretical_Notes | |
| CWE Content Team | MITRE | updated Related_Attack_Patterns | |
| CWE Content Team | MITRE | updated Name | |
| CWE Content Team | MITRE | updated Common_Consequences | |
| CWE Content Team | MITRE | updated Observed_Examples, References, Relationships | |
| CWE Content Team | MITRE | updated Potential_Mitigations | |
| CWE Content Team | MITRE | updated Applicable_Platforms, References, Relationships | |
| CWE Content Team | MITRE | updated References | |
| 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 References, Relationships, Time_of_Introduction | |
| CWE Content Team | MITRE | updated Mapping_Notes | |
| CWE Content Team | MITRE | updated Affected_Resources, Functional_Areas | |
| CWE Content Team | MITRE | updated Detection_Factors, Potential_Mitigations, Weakness_Ordinalities | |
| CWE Content Team | MITRE | updated Common_Consequences, Description |
