COMMON WEAKNESS ENUMERATIONIncomplete

CWE-619

Dangling Database Cursor ('Cursor Injection')

If a database cursor is not closed properly, then it could become accessible to other users while retaining the same privileges that were originally assigned, leaving the cursor "dangling."

Soyutlama

Base

Yapı

Simple

Sömürü İhtimali

Medium

Problemi anla

Problem nedir?

If a database cursor is not closed properly, then it could become accessible to other users while retaining the same privileges that were originally assigned, leaving the cursor "dangling."

Genişletilmiş açıklama

For example, an improper dangling cursor could arise from unhandled exceptions. The impact of the issue depends on the cursor's role, but SQL injection attacks are commonly possible.

Kök neden

Problem nasıl ve ne zaman oluşur?

Yaşam döngüsü evresi

Implementation

This issue is currently reported for unhandled exceptions, but it is theoretically possible any time the programmer does not close the cursor at the proper time.
A cursor is a feature in Oracle PL/SQL and other languages that provides a handle for executing and accessing the results of SQL queries.

Risk

Başarılı sömürü neye yol açar?

Read Application DataModify Application Data

Etkilenen güvenlik alanları: Confidentiality, Integrity

Savunma

Nasıl önlenir ve çözülür?

Implementation

Uygulama aşaması savunması

Detay
Close cursors immediately after access to them is complete. Ensure that you close cursors if exceptions occur.
CWE-619: Common Weakness Enumeration Entry CWE-619 · DayBreach Sözlük · DayBreach