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CWE-120 未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出) 类漏洞列表 1929

CWE-120 未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出) 类弱点 1929 条 CVE 漏洞汇总，含 AI 中文分析。

CWE-120 即经典缓冲区溢出，属于内存安全漏洞。当程序将输入数据复制到输出缓冲区时，若未验证输入大小是否超出目标容量，会导致内存越界写入。攻击者利用此缺陷可覆盖相邻内存数据，进而执行恶意代码或导致系统崩溃。开发者应严格校验输入长度，使用安全的边界检查函数，并确保目标缓冲区足够大，从而从根本上杜绝此类风险。

MITRE CWE 官方描述
CWE：CWE-120 未检查输入大小的缓冲区复制（'Classic Buffer Overflow'） 英文：产品将输入缓冲区复制到输出缓冲区，但未验证输入缓冲区的大小是否小于输出缓冲区的大小。
常见影响 (2)
Integrity, Confidentiality, Availability Modify Memory, Execute Unauthorized Code or Commands
Buffer overflows often can be used to execute arbitrary code, which is usually outside the scope of the product's implicit security policy. This can often be used to subvert any other security service.
Availability Modify Memory, DoS: Crash, Exit, or Restart, DoS: Resource Consumption (CPU)
Buffer overflows generally lead to crashes. Other attacks leading to lack of availability are possible, including putting the product into an infinite loop.
缓解措施 (5)
Requirements Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. For example, many languages that perform their own memory management, such as Java and Perl, are not subject to buffer overflows. Other languages, such as Ada and C#, typically provide overflow protection, but the protection can be disabled by the programmer. Be wary that a lan…
Architecture and Design Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. Examples include the Safe C String Library (SafeStr) by Messier and Viega [REF-57], and the Strsafe.h library from Microsoft [REF-56]. These libraries provide safer versions of overflow-prone string-handling functions.
Operation, Build and Compilation Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index checking. D3-SFCV (Stack Frame Canary Validation) from D3FEND [REF-1334] discusses…
Effectiveness: Defense in Depth
Implementation Consider adhering to the following rules when allocating and managing an application's memory: Double check that your buffer is as large as you specify. When using functions that accept a number of bytes to copy, such as strncpy(), be aware that if the destination buffer size is equal to the source buffer size, it may not NULL-terminate the string. Check buffer boundaries if accessing the buffer i…
Implementation Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does. When performing input validation, consider all potentially relevant properties, including length, type of input, the full range…
代码示例 (2)
The following code asks the user to enter their last name and then attempts to store the value entered in the last_name array.
char last_name[20]; printf ("Enter your last name: "); scanf ("%s", last_name);
Bad · C
The following code attempts to create a local copy of a buffer to perform some manipulations to the data.
void manipulate_string(char * string){ char buf[24]; strcpy(buf, string); ... }
Bad · C
CVE ID 标题 CVSS 风险等级 Published
CVE-2020-10019 Zephyr 缓冲区错误漏洞 — zephyr 8.1 High 2020-05-11
CVE-2020-6999 Moxa EDS-G516E 缓冲区错误漏洞 — Moxa EDS-G516E Series firmware, Version 5.2 or lower 9.1 - 2020-03-26
CVE-2019-5143 Moxa AWK-3131A 格式化字符串错误漏洞 — Moxa 8.8 - 2020-02-25
CVE-2020-5208 ipmitool 缓冲区错误漏洞 — ipmitool 7.7 High 2020-02-05
CVE-2020-5211 NetHack 缓冲区错误漏洞 — NetHack 5.0 Medium 2020-01-28
CVE-2020-5212 NetHack 缓冲区错误漏洞 — NetHack 5.0 Medium 2020-01-28
CVE-2020-5213 NetHack 缓冲区错误漏洞 — NetHack 5.0 Medium 2020-01-28
CVE-2020-5214 NetHack 缓冲区错误漏洞 — NetHack 5.0 Medium 2020-01-28
CVE-2020-5209 NetHack 缓冲区错误漏洞 — NetHack 5.0 Medium 2020-01-28
CVE-2020-5210 NetHack 缓冲区错误漏洞 — NetHack 5.0 Medium 2020-01-28
CVE-2019-17147 TP-Link TL-WR841N 缓冲区错误漏洞 — TL-WR841N 9.8 - 2020-01-07
CVE-2019-5064 OpenCV 缓冲区错误漏洞 — OpenCV 8.8 - 2020-01-03
CVE-2019-5063 OpenCV 缓冲区错误漏洞 — OpenCV 8.8 - 2020-01-03
CVE-2019-7485 SonicWall SMA100 缓冲区错误漏洞 — SMA100 8.8 - 2019-12-19
CVE-2019-8287 TightVNC 缓冲区错误漏洞 — TightVNC 9.8 - 2019-10-29
CVE-2019-11043 PHP 安全漏洞 — PHP 8.7 High 2019-10-28
CVE-2019-10882 Netskope Client 缓冲区错误漏洞 — Netskope client 7.8 - 2019-09-26
CVE-2019-14835 Linux kernel 缓冲区错误漏洞 — Linux kernel 6.7 - 2019-09-17
CVE-2019-1010218 Cherokee Web Server 缓冲区错误漏洞 — Latest Cherokee Web server 7.5 - 2019-07-22
CVE-2019-5439 VideoLAN VLC media player 缓冲区错误漏洞 — VLC Media Player 6.5 - 2019-06-13
CVE-2019-3705 多款Dell产品缓冲区错误漏洞 — iDRAC 9.8 - 2019-04-26
CVE-2019-9134 Solideo Systems Architectural Information System 缓冲区错误漏洞 — Architectural Information System 9.8 - 2019-04-09
CVE-2015-6458 Moxa SoftCMS RTSPVIDEO ActiveX控件缓冲区错误漏洞 — SoftCMS 8.8 - 2019-03-21
CVE-2019-6557 多款Moxa产品缓冲区错误漏洞 — Moxa IKS, EDS 9.8 - 2019-03-05
CVE-2018-8784 FreeRDP 缓冲区错误漏洞 — FreeRDP 9.8 - 2018-11-29
CVE-2018-8785 FreeRDP 缓冲区错误漏洞 — FreeRDP 9.8 - 2018-11-29
CVE-2018-0721 QNAP Systems QNAP QTS 缓冲区错误漏洞 — QTS 7.7 High 2018-11-27
CVE-2018-14652 Red Hat Gluster 缓冲区错误漏洞 — glusterfs 6.5 - 2018-10-31
CVE-2018-14788 Fuji Electric Alpha5 Smart Loader 缓冲区错误漏洞 — Alpha5 Smart Loader 5.3 - 2018-10-01
CVE-2018-10637 Fuji Electric V-Server Lite 缓冲区错误漏洞 — V-Server Lite 7.8 - 2018-09-13

CWE-120（未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)） 是常见的弱点类别，本平台收录该类弱点关联的 1929 条 CVE 漏洞。