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CWE-416 释放后使用 类漏洞列表 2492

CWE-416 释放后使用 类弱点 2492 条 CVE 漏洞汇总,含 AI 中文分析。

CWE-416 释放后使用是一种内存安全漏洞,指程序在释放内存后仍引用该内存区域。攻击者常利用此缺陷,通过重新分配内存并控制其内容,诱导程序执行恶意代码或读取敏感数据,从而引发远程代码执行或信息泄露。开发者应避免此类风险,确保在指针置空前彻底解除引用,采用智能指针等自动内存管理机制,并严格验证内存生命周期,防止悬空指针操作。

MITRE CWE 官方描述
CWE:CWE-416 Use After Free 英文:产品在内存被释放后重新使用或引用该内存。在此之后,该内存可能会被重新分配并保存到另一个指针中,而原始指针则指向新分配内存中的某个位置。由于内存“属于”操作新指针的代码,因此使用原始指针的任何操作均不再有效。
常见影响 (4)
IntegrityModify Memory
The use of previously freed memory may corrupt valid data, if the memory area in question has been allocated and used properly elsewhere.
AvailabilityDoS: Crash, Exit, or Restart
If chunk consolidation occurs after the use of previously freed data, the process may crash when invalid data is used as chunk information.
ConfidentialityRead Memory
Read operations on freed memory can sometimes leak sensitive information instead of causing a crash
Integrity, Confidentiality, AvailabilityExecute Unauthorized Code or Commands
If malicious data is entered before chunk consolidation can take place, it may be possible to take advantage of a write-what-where primitive to execute arbitrary code. If the newly allocated data happens to hold a class, in C++ for example, various function pointers may be scattered within the heap …
缓解措施 (2)
Architecture and DesignChoose a language that provides automatic memory management.
ImplementationWhen freeing pointers, be sure to set them to NULL once they are freed. However, the utilization of multiple or complex data structures may lower the usefulness of this strategy.
Effectiveness: Defense in Depth
代码示例 (2)
The following example demonstrates the weakness.
#include <stdio.h> #include <unistd.h> #define BUFSIZER1 512 #define BUFSIZER2 ((BUFSIZER1/2) - 8) int main(int argc, char **argv) { char *buf1R1; char *buf2R1; char *buf2R2; char *buf3R2; buf1R1 = (char *) malloc(BUFSIZER1); buf2R1 = (char *) malloc(BUFSIZER1); free(buf2R1); buf2R2 = (char *) malloc(BUFSIZER2); buf3R2 = (char *) malloc(BUFSIZER2); strncpy(buf2R1, argv[1], BUFSIZER1-1); free(buf1R1); free(buf2R2); free(buf3R2); }
Bad · C
The following code illustrates a use after free error:
char* ptr = (char*)malloc (SIZE); if (err) { abrt = 1; free(ptr); } ... if (abrt) { logError("operation aborted before commit", ptr); }
Bad · C
CVE ID标题CVSS风险等级Published
CVE-2024-30344 Foxit PDF Reader 安全漏洞 — PDF Reader 7.8AIHighAI2024-04-02
CVE-2024-30343 Foxit PDF Reader 安全漏洞 — PDF Reader 7.8AIHighAI2024-04-02
CVE-2024-30342 Foxit PDF Reader 安全漏洞 — PDF Reader 7.8AIHighAI2024-04-02
CVE-2024-30339 Foxit PDF Reader 安全漏洞 — PDF Reader 7.8AIHighAI2024-04-02
CVE-2024-30338 Foxit PDF Reader 安全漏洞 — PDF Reader 7.8AIHighAI2024-04-02
CVE-2024-30337 Foxit PDF Reader 安全漏洞 — PDF Reader 7.8AIHighAI2024-04-02
CVE-2024-30336 Foxit PDF Reader 安全漏洞 — PDF Reader 7.8AIHighAI2024-04-02
CVE-2024-28951 OpenHarmony 安全漏洞 — OpenHarmony 5.5 Medium2024-04-02
CVE-2024-22180 OpenHarmony 安全漏洞 — OpenHarmony 3.3 Low2024-04-02
CVE-2024-22098 OpenHarmony 安全漏洞 — OpenHarmony 6.5 Medium2024-04-02
CVE-2024-21472 Qualcomm Chipsets 安全漏洞 — Snapdragon 8.4 High2024-04-01
CVE-2024-21468 Qualcomm Chipsets 安全漏洞 — Snapdragon 8.4 High2024-04-01
CVE-2024-21918 Rockwell Automation Arena Simulation Software 安全漏洞 — Arena Simulation 7.8 High2024-03-26
CVE-2024-1848 SolidWorks 安全漏洞 — SOLIDWORKS Desktop 7.8 High2024-03-22
CVE-2024-20752 Adobe Bridge 资源管理错误漏洞 — Bridge 7.8 High2024-03-18
CVE-2024-26182 Microsoft Windows Kernel 安全漏洞 — Windows 10 Version 1809 7.8 High2024-03-12
CVE-2024-21437 Microsoft Graphics Component 安全漏洞 — Windows 10 Version 1809 7.8 High2024-03-12
CVE-2024-21407 Microsoft Hyper-V 安全漏洞 — Windows 10 Version 1809 8.1 High2024-03-12
CVE-2024-21334 Microsoft Open Management Infrastructure 安全漏洞 — System Center Operations Manager (SCOM) 2019 9.8 Critical2024-03-12
CVE-2024-21443 Microsoft Windows Kernel 安全漏洞 — Windows 10 Version 1809 7.3 High2024-03-12
CVE-2024-21439 Microsoft Windows Telephony Server 安全漏洞 — Windows 10 Version 1809 7.0 High2024-03-12
CVE-2024-21426 Microsoft SharePoint 安全漏洞 — Microsoft SharePoint Enterprise Server 2016 7.8 High2024-03-12
CVE-2024-27934 Deno 安全漏洞 — deno 8.4 High2024-03-06
CVE-2024-27308 Mio 安全漏洞 — mio 7.5 High2024-03-06
CVE-2023-50716 eProsima Fast DDS 安全漏洞 — Fast-DDS 9.7 Critical2024-03-06
CVE-2024-27929 ImageSharp 安全漏洞 — ImageSharp 7.1 High2024-03-05
CVE-2024-0155 Dell Digital Delivery 资源管理错误漏洞 — Dell Digital Delivery (D3) 7.0 High2024-03-04
CVE-2023-6241 ARM Mali GPU Kernel Driver 安全漏洞 — Midgard GPU Kernel Driver 7.0AIHighAI2024-03-04
CVE-2023-43552 Qualcomm Chipsets 安全漏洞 — Snapdragon 9.8 Critical2024-03-04
CVE-2023-43547 Qualcomm Chipsets 安全漏洞 — Snapdragon 8.4 High2024-03-04

CWE-416(释放后使用) 是常见的弱点类别,本平台收录该类弱点关联的 2492 条 CVE 漏洞。