During a SQL update of a database, a temporary field that was created was replaced by an attacker in order to allow access to the system. Which of…

A race condition occurs when a system's behavior depends on the sequence or timing

of uncontrollable events. In the described scenario, an attacker exploits the time

window between the creation of a temporary field during a SQL update and its

subsequent use. The attacker "races" to replace this temporary field with a malicious

version before the legitimate process uses it, ultimately leading to unauthorized system

access. This exploitation of a timing-sensitive window to alter a shared resource (the

temporary field) is characteristic of a race condition vulnerability.

B. Memory injection: While the temporary field exists in memory, memory injection

typically refers to vulnerabilities like buffer overflows or directly writing to arbitrary

memory locations. The question emphasizes the timing of the field's replacement

rather than a fundamental memory handling flaw as the root cause.

C. Malicious update: This term describes the attacker's successful action or the

outcome (the field was updated with malicious intent). However, it does not specify the

type of vulnerability in the system that permitted this unauthorized modification.

D. Sideloading: Sideloading refers to the practice of installing applications from

unofficial sources, usually onto mobile devices or computers, bypassing standard app

stores or distribution channels. This is unrelated to the described database

vulnerability.

1. Race Condition Definition:

o NIST Computer Security Resource Center (CSRC) Glossary: "Race condition - A

flaw that produces an unexpected result when the timing of actions impacts results."

URL: https://csrc.nist.gov/glossary/term/race_condition

Specific Location: Definition of "Race condition."

o MITRE Common Weakness Enumeration (CWE): CWE-362: Concurrent Execution

using Shared Resource with Improper Synchronization ('Race Condition'). "The

weakness is caused by a timing window that allows a state to be changed between

when it is checked and when it is used (TOCTOU)."

URL: https://cwe.mitre.org/data/definitions/362.html

Specific Location: Description of CWE-362, including the concept of TOCTOU.

2. General Security Concepts (for differentiating incorrect options):

o For Memory Injection (distinction): While not a direct definition source, discussions on

secure coding practices often differentiate memory corruption vulnerabilities from logical

flaws like race conditions. For instance, university course materials on software security

would cover this.

Example (conceptual, as specific documents for "not memory injection" are

contextual): Stanford University, CS155 Computer and Network Security, often covers

different vulnerability classes. (A general reference to such courseware would be:

Course materials from CS155, Stanford University).

o For Sideloading: Official vendor documentation for mobile operating systems often

defines sideloading in the context of application installation.

Example: Android Open Source Project documentation (source.android.com) discusses

app installation and security. (Conceptual reference).