VariantIncomplete

CWE-827Improper Control of Document Type Definition

Category: other

Description

The product does not restrict a reference to a Document Type Definition (DTD) to the intended control sphere. This might allow attackers to reference arbitrary DTDs, possibly causing the product to expose files, consume excessive system resources, or execute arbitrary http requests on behalf of the attacker.

Common consequences· 3

  • Confidentiality — Read Files or Directories
    If the attacker is able to include a crafted DTD and a default entity resolver is enabled, the attacker may be able to access arbitrary files on the system.
  • Availability — DoS: Resource Consumption (CPU), DoS: Resource Consumption (Memory)
    The DTD may cause the parser to consume excessive CPU cycles or memory using techniques such as nested or recursive entity references (CWE-776).
  • Integrity / Confidentiality / Availability / Access Control — Execute Unauthorized Code or Commands, Gain Privileges or Assume Identity
    The DTD may include arbitrary HTTP requests that the server may execute. This could lead to other attacks leveraging the server's trust relationship with other entities.

References

  1. https://cwe.mitre.org/data/definitions/827.html

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

CWE
Missing XML Validation
CWE
Improper Neutralization of Data within XPath Expressions ('XPath Injection')
CWE
Improper Neutralization of Data within XQuery Expressions ('XQuery Injection')
CWE
Improper Restriction of XML External Entity Reference
CWE
XML Injection (aka Blind XPath Injection)
CWE
Permissive Cross-domain Security Policy with Untrusted Domains
Sourced from MITRE CWE 4.20. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.