이름: Missing XML Validation
The product accepts XML from an untrusted source but does not validate the XML against the proper schema.
일반 정보
취약점 도입 방식
Implementation : The programmer might assume that a provided XML document is well-formed.적용 가능한 플랫폼
언어
클래스: Not Language-Specific (Undetermined)일반적인 결과
| 범위 | 영향 | 가능성 |
|---|---|---|
| Integrity | Unexpected State, Varies by Context 참고: By accepting an XML document without validating it against a DTD or XML schema, the programmer leaves a door open for attackers to provide unexpected, unreasonable, or malicious input. |
잠재적 완화 방법
Phases : Architecture and Design탐지 방법
Automated Static Analysis
Automated static analysis, commonly referred to as Static Application Security Testing (SAST), can find some instances of this weakness by analyzing source code (or binary/compiled code) without having to execute it. Typically, this is done by building a model of data flow and control flow, then searching for potentially-vulnerable patterns that connect "sources" (origins of input) with "sinks" (destinations where the data interacts with external components, a lower layer such as the OS, etc.)효과성 : High
취약점 매핑 메모
근거 : 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.댓글 : 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.
관련 공격 패턴
| CAPEC ID | 공격 패턴 이름 |
|---|---|
| CAPEC-230 | Serialized Data with Nested Payloads
Applications often need to transform data in and out of a data format (e.g., XML and YAML) by using a parser. It may be possible for an adversary to inject data that may have an adverse effect on the parser when it is being processed. Many data format languages allow the definition of macro-like structures that can be used to simplify the creation of complex structures. By nesting these structures, causing the data to be repeatedly substituted, an adversary can cause the parser to consume more resources while processing, causing excessive memory consumption and CPU utilization. |
| CAPEC-231 | Oversized Serialized Data Payloads
An adversary injects oversized serialized data payloads into a parser during data processing to produce adverse effects upon the parser such as exhausting system resources and arbitrary code execution. |
참고 자료
REF-6
Seven Pernicious Kingdoms: A Taxonomy of Software Security ErrorsKatrina Tsipenyuk, Brian Chess, Gary McGraw.
https://cwe.mitre.org/documents/sources/SevenPerniciousKingdoms.pdf
REF-1551
simplexml_load_stringhttps://www.php.net/manual/en/function.simplexml-load-string.php/
제출
| 이름 | 조직 | 날짜 | 출시일 | Version |
|---|---|---|---|---|
| 7 Pernicious Kingdoms | Draft 3 |
수정 사항
| 이름 | 조직 | 날짜 | 댓글 |
|---|---|---|---|
| Sean Eidemiller | Cigital | added/updated demonstrative examples | |
| Eric Dalci | Cigital | updated Demonstrative_Example, Potential_Mitigations, Time_of_Introduction | |
| CWE Content Team | MITRE | updated Relationships, Other_Notes, Taxonomy_Mappings, Weakness_Ordinalities | |
| CWE Content Team | MITRE | updated Description, Other_Notes | |
| CWE Content Team | MITRE | updated Demonstrative_Examples | |
| CWE Content Team | MITRE | updated Description | |
| CWE Content Team | MITRE | updated Common_Consequences | |
| 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 Related_Attack_Patterns | |
| CWE Content Team | MITRE | updated Demonstrative_Examples, Other_Notes, Potential_Mitigations | |
| CWE Content Team | MITRE | updated Demonstrative_Examples, Relationships, Taxonomy_Mappings | |
| CWE Content Team | MITRE | updated Relationships | |
| CWE Content Team | MITRE | updated Applicable_Platforms, Causal_Nature, Relationships | |
| CWE Content Team | MITRE | updated Relationships | |
| CWE Content Team | MITRE | updated References, Related_Attack_Patterns, Relationships | |
| CWE Content Team | MITRE | updated Relationships | |
| CWE Content Team | MITRE | updated Description | |
| CWE Content Team | MITRE | updated Detection_Factors, Relationships | |
| CWE Content Team | MITRE | updated Mapping_Notes | |
| CWE Content Team | MITRE | updated Relationships | |
| CWE Content Team | MITRE | updated Common_Consequences, Demonstrative_Examples, Description, Modes_of_Introduction, References |
