CWE-1246 — Vulnerability Class 1

1 vulnerabilities classified as CWE-1246. AI Chinese analysis included.

CWE-1246 represents a critical implementation weakness where software fails to properly manage wear leveling in non-volatile memory technologies like NAND flash or EEPROM. These storage mediums possess a finite lifespan, enduring only a limited number of program and erase cycles before becoming unreliable or failing entirely. Attackers typically exploit this vulnerability by triggering excessive write operations to specific memory segments, causing premature physical degradation of the storage device. This denial-of-service approach can lead to system instability, data loss, or complete hardware failure without requiring traditional code execution privileges. To mitigate this risk, developers must implement robust wear leveling algorithms that distribute write operations evenly across all available memory blocks. By abstracting physical storage locations and ensuring balanced usage, software prevents any single segment from reaching its endurance limit prematurely, thereby preserving device integrity and longevity.

MITRE CWE Description

The product does not implement or incorrectly implements wear leveling operations in limited-write non-volatile memories. Non-volatile memories such as NAND Flash, EEPROM, etc. have individually erasable segments, each of which can be put through a limited number of program/erase or write cycles. For example, the device can only endure a limited number of writes, after which the device becomes unreliable. In order to wear out the cells in a uniform manner, non-volatile memory and storage products based on the above-mentioned technologies implement a technique called wear leveling. Once a set threshold is reached, wear leveling maps writes of a logical block to a different physical block. This prevents a single physical block from prematurely failing due to a high concentration of writes.

Common Consequences (1)

AvailabilityDoS: Instability

If wear leveling is improperly implemented, attackers may be able to programmatically cause the storage to become unreliable within a much shorter time than would normally be expected.

Mitigations (1)

Architecture and Design, Implementation, TestingInclude secure wear leveling algorithms and ensure they may not be bypassed.

Effectiveness: High

Examples (1)

An attacker can render a memory line unusable by repeatedly causing a write to the memory line.

// Do aligned alloc of (W+1) arrays each of size S while(1) { for (ii = 0; ii < W + 1; ii++) array[ii].element[0]++; }

Attack · C++

Wear leveling must be used to even out writes to the device.

Good · Other

CVE ID	Title	CVSS	Severity	Published
CVE-2023-32229	Bosch IP cameras 资源管理错误漏洞 — Camera Firmware	4.9	Medium	2023-06-15

Vulnerabilities classified as CWE-1246 represent 1 CVEs. The CWE taxonomy describes the weakness; review individual CVEs for product-specific impact.

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CWE-1246 — Vulnerability Class 1