CAPEC-201
Serialized Data External Linking
2014-06-23
00h00 +00:00
00h00 +00:00
특정 CAPEC 알림
특정 CAPEC의 변경 사항에 대한 정보를 받아보세요.
CAPEC 설명
An adversary creates a serialized data file (e.g. XML, YAML, etc...) that contains an external data reference. Because serialized data parsers may not validate documents with external references, there may be no checks on the nature of the reference in the external data. This can allow an adversary to open arbitrary files or connections, which may further lead to the adversary gaining access to information on the system that they would normally be unable to obtain.
CAPEC 정보
실행 흐름
1) Explore
[Survey the target] Using a browser or an automated tool, an adversary records all instances of web services that process requests with serialized data.
기법
- Use an automated tool to record all instances of URLs that process requests with serialized data.
- Use a browser to manually explore the website and analyze how the application processes serialized data requests.
2) Exploit
[Craft malicious payload] The adversary crafts malicious data message that contains references to sensitive files.
3) Exploit
[Launch an External Linking attack] Send the malicious crafted message containing the reference to a sensitive file to the target URL.
사전 조건
The target must follow external data references without validating the validity of the reference target.필요 기술
To send serialized data messages with maliciously crafted schema.필요 리소스
None: No specialized resources are required to execute this type of attack.완화 방법
Configure the serialized data processor to only retrieve external entities from trusted sources.관련 약점
| 약점 이름 | |
|---|---|
CWE-829 |
Inclusion of Functionality from Untrusted Control Sphere The product imports, requires, or includes executable functionality (such as a library) from a source that is outside of the intended control sphere. |
참고 자료
REF-73
XXE (Xml eXternal Entity) Attackhttp://www.securiteam.com/securitynews/6D0100A5PU.html
REF-74
CESA-2007-002 - rev 2: Sun JDK6 breaks XXE attack protectionhttp://scary.beasts.org/security/CESA-2007-002.html
제출
| 이름 | 조직 | 날짜 | 출시일 |
|---|---|---|---|
| CAPEC Content Team | The MITRE Corporation |
수정 사항
| 이름 | 조직 | 날짜 | 댓글 |
|---|---|---|---|
| CAPEC Content Team | The MITRE Corporation | Updated Activation_Zone, Attack_Phases, Attacker_Skills_or_Knowledge_Required, Description, Description Summary, Examples-Instances, Injection_Vector, Methods_of_Attack, Payload, Payload_Activation_Impact, Resources_Required, Typical_Likelihood_of_Exploit, Typical_Severity | |
| CAPEC Content Team | The MITRE Corporation | Updated Attack_Phases, Description Summary, Related_Attack_Patterns, Related_Weaknesses | |
| CAPEC Content Team | The MITRE Corporation | Updated @Name, Description, Execution_Flow, Mitigations, Skills_Required | |
| CAPEC Content Team | The MITRE Corporation | Updated Consequences, Description | |
| CAPEC Content Team | The MITRE Corporation | Updated Description, Example_Instances, Execution_Flow, Prerequisites | |
| CAPEC Content Team | The MITRE Corporation | Updated Example_Instances, Related_Attack_Patterns |
