CWE-1385
Missing Origin Validation in WebSockets
2022-04-28
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: Missing Origin Validation in WebSockets
The product uses a WebSocket, but it does not properly verify that the source of data or communication is valid.
一般情報
背景の詳細
導入モード
Architecture and DesignImplementation
適用可能なプラットフォーム
言語
クラス： Not Language-Specific (Undetermined)名前： Go (Undetermined)
テクノロジー
クラス： Web Based (Often)名前： Web Server (Undetermined)
一般的な結果
| スコープ | 影響 | 可能性 |
|---|---|---|
| Confidentiality Integrity Availability Non-Repudiation Access Control | Varies by Context, Gain Privileges or Assume Identity, Bypass Protection Mechanism, Read Application Data, Modify Application Data, DoS: Crash, Exit, or Restart 注記：This makes CSRF attacks more powerful. The consequences will vary depending on the nature of the functionality that is vulnerable to CSRF. An attacker could effectively perform any operations as the victim. If the victim is an administrator or privileged user, the consequences may include obtaining complete control over the web application - deleting or stealing data, uninstalling the product, or using it to launch other attacks against all of the product's users. Because the attacker has the identity of the victim, the scope of the CSRF is limited only by the victim's privileges. |
観察された例
| 参考文献 | 説明 |
|---|---|
CVE-2020-25095 | web console for SIEM product does not check Origin header, allowing Cross Site WebSocket Hijacking (CSWH) |
CVE-2018-6651 | Chain: gaming client attempts to validate the Origin header, but only uses a substring, allowing Cross-Site WebSocket hijacking by forcing requests from an origin whose hostname is a substring of the valid origin. |
CVE-2018-14730 | WebSocket server does not check the origin of requests, allowing attackers to steal developer's code using a ws://127.0.0.1:3123/ connection. |
CVE-2018-14731 | WebSocket server does not check the origin of requests, allowing attackers to steal developer's code using a ws://127.0.0.1/ connection to a randomized port number. |
CVE-2018-14732 | WebSocket server does not check the origin of requests, allowing attackers to steal developer's code using a ws://127.0.0.1:8080/ connection. |
潜在的な緩和策
Phases : ImplementationEnable CORS-like access restrictions by verifying the 'Origin' header during the WebSocket handshake.
Phases : Implementation
Use a randomized CSRF token to verify requests.
Phases : Implementation
Use TLS to securely communicate using 'wss' (WebSocket Secure) instead of 'ws'.
Phases : Architecture and Design // Implementation
Require user authentication prior to the WebSocket connection being established. For example, the WS library in Node has a 'verifyClient' function.
Phases : Implementation
Leverage rate limiting to prevent against DoS. Use of the leaky bucket algorithm can help with this.
Phases : Implementation
Use a library that provides restriction of the payload size. For example, WS library for Node includes 'maxPayloadoption' that can be set.
Phases : Implementation
Treat data/input as untrusted in both directions and apply the same data/input sanitization as XSS, SQLi, etc.
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.
参考文献
REF-1257
Cross-Site WebSocket Hijacking (CSWSH)Christian Schneider.
https://christian-schneider.net/blog/cross-site-websocket-hijacking/
REF-1251
WebSockets not Bound by SOP and CORS? Does this mean...Drew Branch.
https://blog.securityevaluators.com/websockets-not-bound-by-cors-does-this-mean-2e7819374acc
REF-1252
How to secure your WebSocket connectionsMehul Mohan.
https://www.freecodecamp.org/news/how-to-secure-your-websocket-connections-d0be0996c556/
REF-1256
Cross-Site WebSocket Hijacking (CSWSH)Vickie Li.
https://medium.com/swlh/hacking-websocket-25d3cba6a4b9
REF-1253
Testing for WebSockets security vulnerabilitiesPortSwigger.
https://portswigger.net/web-security/websockets
REF-1566
Golang Secure Coding Practices guideOWASP.
https://github.com/OWASP/Go-SCP
登録情報
| 名前 | 組織 | 日付 | リリース日 | Version |
|---|---|---|---|---|
| Anonymous External Contributor | 4.7 |
変更履歴
| 名前 | 組織 | 日付 | コメント |
|---|---|---|---|
| CWE Content Team | MITRE | updated Description | |
| CWE Content Team | MITRE | updated References, Relationships | |
| CWE Content Team | MITRE | updated Mapping_Notes | |
| CWE Content Team | MITRE | updated References | |
| CWE Content Team | MITRE | updated Applicable_Platforms, Weakness_Ordinalities | |
| CWE Content Team | MITRE | updated Applicable_Platforms, Background_Details, Common_Consequences, Description, References, Relationships, Taxonomy_Mappings |
