CWE-472External Control of Assumed-Immutable Web Parameter

Description

Common consequences· 1

• Integrity — Modify Application Data
  Without appropriate protection mechanisms, the client can easily tamper with cookies and similar web data. Reliance on the cookies without detailed validation can lead to problems such as SQL injection. If you use cookie values for security related decisions on the server side, manipulating the cookies might lead to violations of security policies such as authentication bypassing, user impersonation and privilege escalation. In addition, storing sensitive data in the cookie without appropriate protection can also lead to disclosure of sensitive user data, especially data stored in persistent cookies.

Potential mitigations· 2

• [Implementation]
• [Implementation]Inputs should be decoded and canonicalized to the application's current internal representation before being validated (CWE-180). Make sure that the application does not decode the same input twice (CWE-174). Such errors could be used to bypass allowlist validation schemes by introducing dangerous inputs after they have been checked.

Related CAPEC attack patterns· 4

Exploits (incoming)4

(incoming)36

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Related by meaning· 6

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