CAPEC-468
Generic Cross-Browser Cross-Domain Theft
2014-06-23
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指定 CAPEC 提醒
随时了解指定 CAPEC 的变更。
CAPEC 描述
An attacker makes use of Cascading Style Sheets (CSS) injection to steal data cross domain from the victim's browser. The attack works by abusing the standards relating to loading of CSS: 1. Send cookies on any load of CSS (including cross-domain) 2. When parsing returned CSS ignore all data that does not make sense before a valid CSS descriptor is found by the CSS parser.
CAPEC 信息
前提条件
No new lines can be present in the injected CSS stringProper HTML or URL escaping of the " and ' characters is not presentThe attacker has control of two injection points: pre-string and post-string所需技能
Ability to craft a CSS injection所需资源
Attacker controlled site/page to render a page referencing the injected CSS string缓解措施
Design: Prior to performing CSS parsing, require the CSS to start with well-formed CSS when it is a cross-domain load and the MIME type is broken. This is a browser level fix.Implementation: Perform proper HTML encoding and URL escaping
相关弱点
| 弱点名称 | |
|---|---|
CWE-707 |
Improper Neutralization The product does not ensure or incorrectly ensures that structured messages or data are well-formed and that certain security properties are met before being used when received from an upstream component, or before being sent to a downstream component. |
CWE-149 |
Improper Neutralization of Quoting Syntax Quotes injected into a product can be used to compromise a system. As data are parsed, an injected/absent/duplicate/malformed use of quotes may cause the process to take unexpected actions. |
CWE-177 |
Improper Handling of URL Encoding (Hex Encoding) The product does not properly handle when all or part of an input has been URL encoded. |
CWE-838 |
Inappropriate Encoding for Output Context The product uses or specifies an encoding when generating output to a downstream component, but the specified encoding is not the same as the encoding that is expected by the downstream component. |
参考资料
REF-405
Generic cross-browser cross-domain theftChris Evans.
http://scarybeastsecurity.blogspot.com/2009/12/generic-cross-browser-cross-domain.html
提交记录
| 名称 | 组织 | 日期 | 发布日期 |
|---|---|---|---|
| CAPEC Content Team | The MITRE Corporation |
修改记录
| 名称 | 组织 | 日期 | 备注 |
|---|---|---|---|
| CAPEC Content Team | The MITRE Corporation | Updated Related_Attack_Patterns | |
| CAPEC Content Team | The MITRE Corporation | Updated Related_Attack_Patterns | |
| CAPEC Content Team | The MITRE Corporation | Updated Mitigations | |
| CAPEC Content Team | The MITRE Corporation | Updated Description, Extended_Description |
