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CWE-131 缓冲区大小计算不正确 类漏洞列表 109

CWE-131 缓冲区大小计算不正确 类弱点 109 条 CVE 漏洞汇总，含 AI 中文分析。

CWE-131属于内存安全类漏洞，指产品在分配缓冲区时未能正确计算所需大小。攻击者通常利用此缺陷触发缓冲区溢出，进而执行恶意代码或导致系统崩溃。开发者应避免此类风险，需严格验证输入长度，使用安全的内存分配函数，并确保在分配前准确计算缓冲区大小，同时实施边界检查以防止越界访问。

MITRE CWE 官方描述
CWE：CWE-131 缓冲区大小计算错误 (Incorrect Calculation of Buffer Size) 英文：产品在分配缓冲区时未能正确计算所需的大小，这可能导致缓冲区溢出 (buffer overflow)。
常见影响 (1)
Integrity, Availability, Confidentiality DoS: Crash, Exit, or Restart, Execute Unauthorized Code or Commands, Read Memory, Modify Memory
If the incorrect calculation is used in the context of memory allocation, then the software may create a buffer that is smaller or larger than expected. If the allocated buffer is smaller than expected, this could lead to an out-of-bounds read or write (CWE-119), possibly causing a crash, allowing a…
缓解措施 (5)
Implementation When allocating a buffer for the purpose of transforming, converting, or encoding an input, allocate enough memory to handle the largest possible encoding. For example, in a routine that converts "&" characters to "&" for HTML entity encoding, the output buffer needs to be at least 5 times as large as the input buffer.
Implementation Understand the programming language's underlying representation and how it interacts with numeric calculation (CWE-681). Pay close attention to byte size discrepancies, precision, signed/unsigned distinctions, truncation, conversion and casting between types, "not-a-number" calculations, and how the language handles numbers that are too large or too small for its underlying representation. [REF-7]…
Implementation Perform input validation on any numeric input by ensuring that it is within the expected range. Enforce that the input meets both the minimum and maximum requirements for the expected range.
Architecture and Design For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.
Implementation When processing structured incoming data containing a size field followed by raw data, identify and resolve any inconsistencies between the size field and the actual size of the data (CWE-130).
代码示例 (2)
The following code allocates memory for a maximum number of widgets. It then gets a user-specified number of widgets, making sure that the user does not request too many. It then initializes the elements of the array using InitializeWidget(). Because the number of widgets can vary for each request, the code inserts a NULL pointer to signify the location of the last widget.
int i; unsigned int numWidgets; Widget **WidgetList; numWidgets = GetUntrustedSizeValue(); if ((numWidgets == 0) || (numWidgets > MAX_NUM_WIDGETS)) { ExitError("Incorrect number of widgets requested!"); } WidgetList = (Widget **)malloc(numWidgets * sizeof(Widget *)); printf("WidgetList ptr=%p\n", WidgetList); for(i=0; i<numWidgets; i++) { WidgetList[i] = InitializeWidget(); } WidgetList[numWidgets] = NULL; showWidgets(WidgetList);
Bad · C
The following image processing code allocates a table for images.
img_t table_ptr; /*struct containing img data, 10kB each*/ int num_imgs; ... num_imgs = get_num_imgs(); table_ptr = (img_t*)malloc(sizeof(img_t)*num_imgs); ...
Bad · C
CVE ID 标题 CVSS 风险等级 Published
CVE-2023-52557 OpenBSD 安全漏洞 — OpenBSD 7.5 - 2024-03-01
CVE-2023-50736 Lexmark 安全漏洞 — various 9.0 Critical 2024-02-28
CVE-2024-23606 Biosig Project libbiosig 安全漏洞 — libbiosig 9.8 Critical 2024-02-20
CVE-2024-23805 F5 BIG-IP 安全漏洞 — BIG-IP 7.5 High 2024-02-14
CVE-2023-6780 glibc 缓冲区错误漏洞 — glibc 5.3 Medium 2024-01-31
CVE-2024-23622 IBM eFilm Workstation 缓冲区错误漏洞 — eFilm Workstation 10.0 Critical 2024-01-25
CVE-2024-23621 IBM eFilm Workstation 安全漏洞 — eFilm Workstation 10.0 Critical 2024-01-25
CVE-2023-30575 Apache Guacamole 注入漏洞 — Apache Guacamole 6.5 Medium 2023-06-07
CVE-2023-24819 RIOT RIOT-OS 缓冲区错误漏洞 — RIOT 9.8 Critical 2023-04-24
CVE-2022-25731 Qualcomm Chipsets 缓冲区错误漏洞 — Snapdragon 7.5 High 2023-04-04
CVE-2023-1175 Vim 安全漏洞 — vim/vim 6.6 - 2023-03-04
CVE-2023-0568 PHP 安全漏洞 — PHP 7.5 High 2023-02-16
CVE-2022-4378 Linux kernel 缓冲区错误漏洞 — kernel 7.8 - 2023-01-05
CVE-2022-41885 Google TensorFlow 安全漏洞 — tensorflow 4.8 Medium 2022-11-18
CVE-2022-41886 Google TensorFlow 安全漏洞 — tensorflow 4.8 Medium 2022-11-18
CVE-2022-41887 Google TensorFlow 安全漏洞 — tensorflow 4.8 Medium 2022-11-18
CVE-2022-41907 Google TensorFlow 安全漏洞 — tensorflow 4.8 Medium 2022-11-18
CVE-2022-31630 PHP 缓冲区错误漏洞 — PHP 6.5 Medium 2022-11-14
CVE-2022-39377 sysstat 安全漏洞 — sysstat 7.0 High 2022-11-08
CVE-2022-43945 Linux kernel 安全漏洞 — linux_kernel 7.5 - 2022-11-04
CVE-2022-2520 LibTIFF 安全漏洞 — libtiff 6.5 - 2022-08-31
CVE-2021-4155 Red Hat Enterprise Linux 权限许可和访问控制问题漏洞 — kernel 5.5 - 2022-08-24
CVE-2022-2873 Linux kernel 安全漏洞 — Kernel 5.5 - 2022-08-22
CVE-2021-38435 Connext Dds 多款产品缓冲区错误漏洞 — Connext DDS Professional 6.6 Medium 2022-05-05
CVE-2021-38423 GurumNetworks GurumDDS 缓冲区错误漏洞 — GurumDDS 6.6 Medium 2022-05-05
CVE-2022-22137 Accusoft ImageGear 安全漏洞 — ImageGear 8.1 - 2022-05-03
CVE-2021-21793 Accusoft ImageGear缓冲区错误漏洞 — Accusoft 8.8 - 2021-07-08
CVE-2021-21824 Accusoft ImageGear 缓冲区错误漏洞 — Accusoft 8.8 - 2021-06-11
CVE-2021-3491 Linux kernel 缓冲区错误漏洞 — Linux kernel 7.8 High 2021-06-04
CVE-2021-29521 Google TensorFlow 安全漏洞 — tensorflow 2.5 Low 2021-05-14

CWE-131（缓冲区大小计算不正确） 是常见的弱点类别，本平台收录该类弱点关联的 109 条 CVE 漏洞。