Improper Handling of Insufficient Privileges

Draft Base
Structure: Simple
Description

This vulnerability occurs when an application fails to properly manage situations where it lacks the necessary permissions to execute an action. This flawed handling can lead to crashes, data corruption, or unintended security bypasses.

Extended Description

Insufficient privilege handling flaws typically arise when developers assume an operation will always succeed, neglecting to implement robust error-checking for permission failures. Instead of gracefully degrading or informing the user, the application might throw a raw exception, log sensitive data, or enter an unstable state. This creates a reliability issue that attackers can potentially exploit to cause denial-of-service or gather internal system information. To prevent this, always validate permissions before performing sensitive operations and implement consistent, secure error handling that doesn't leak details. Managing these authorization checks at scale across a complex application is difficult; an ASPM like Plexicus can help you track and remediate these logic flaws across your entire stack by correlating runtime behavior with code-level patterns.

Common Consequences 1
Scope: Other

Impact: OtherAlter Execution Logic

Detection Methods 1
Automated Static AnalysisHigh
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.)
Observed Examples 3
CVE-2001-1564System limits are not properly enforced after privileges are dropped.
CVE-2005-3286Firewall crashes when it can't read a critical memory block that was protected by a malicious process.
CVE-2005-1641Does not give admin sufficient privileges to overcome otherwise legitimate user actions.
Applicable Platforms
Languages:
Not Language-Specific : Undetermined
Modes of Introduction
Implementation
Operation
Taxonomy Mapping
  • PLOVER
Notes
RelationshipOverlaps dropped privileges, insufficient permissions.
TheoreticalThis has a layering relationship with Unchecked Error Condition and Unchecked Return Value.
TheoreticalWithin the context of vulnerability theory, privileges and permissions are two sides of the same coin. Privileges are associated with actors, and permissions are associated with resources. To perform access control, at some point the product makes a decision about whether the actor (and the privileges that have been assigned to that actor) is allowed to access the resource (based on the permissions that have been specified for that resource).