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CWE-787 (跨界内存写) — Vulnerability Class 2200

2200 vulnerabilities classified as CWE-787 (跨界内存写). AI Chinese analysis included.

CWE-787 represents a critical memory management weakness where software incorrectly writes data beyond the allocated boundaries of a buffer. This flaw typically arises from insufficient bounds checking, allowing attackers to overwrite adjacent memory locations with malicious payloads. Exploitation often leads to arbitrary code execution, denial of service, or privilege escalation by corrupting critical system structures or control flow data. Developers mitigate this risk by implementing rigorous input validation and utilizing safe programming practices that enforce strict boundary checks before any memory operation. Employing modern languages with automatic memory management, such as Rust or Java, further reduces exposure by preventing direct pointer arithmetic. Additionally, static analysis tools and fuzzing techniques help identify potential out-of-bounds conditions during the development lifecycle, ensuring that buffer operations remain within their intended limits and preserving application integrity against memory corruption attacks.

MITRE CWE Description
The product writes data past the end, or before the beginning, of the intended buffer.
Common Consequences (3)
IntegrityModify Memory, Execute Unauthorized Code or Commands
Write operations could cause memory corruption. In some cases, an adversary can modify control data such as return addresses in order to execute unexpected code.
AvailabilityDoS: Crash, Exit, or Restart
Attempting to access out-of-range, invalid, or unauthorized memory could cause the product to crash.
OtherUnexpected State
Subsequent write operations can produce undefined or unexpected results.
Mitigations (5)
RequirementsUse 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 DesignUse 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 CompilationUse 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
ImplementationConsider adhering to the following rules when allocating and managing an application's memory: Double check that the buffer is as large as specified. 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 in a…
Operation, Build and CompilationRun or compile the software using features or extensions that randomly arrange the positions of a program's executable and libraries in memory. Because this makes the addresses unpredictable, it can prevent an attacker from reliably jumping to exploitable code. Examples include Address Space Layout Randomization (ASLR) [REF-58] [REF-60] and Position-Independent Executables (PIE) [REF-64]. Imported…
Effectiveness: Defense in Depth
Examples (2)
The following code attempts to save four different identification numbers into an array.
int id_sequence[3]; /* Populate the id array. */ id_sequence[0] = 123; id_sequence[1] = 234; id_sequence[2] = 345; id_sequence[3] = 456;
Bad · C
In the following code, it is possible to request that memcpy move a much larger segment of memory than assumed:
int returnChunkSize(void *) { /* if chunk info is valid, return the size of usable memory, * else, return -1 to indicate an error */ ... } int main() { ... memcpy(destBuf, srcBuf, (returnChunkSize(destBuf)-1)); ... }
Bad · C
CVE IDTitleCVSSSeverityPublished
CVE-2021-38406 Delta Electronics DOPSoft 2 Out-of-Bounds Write — DOPSoft 2 7.8 High2021-09-17
CVE-2021-3751 Out-of-bounds Write in bfabiszewski/libmobi — bfabiszewski/libmobi 9.8 -2021-09-15
CVE-2021-25665 Simcenter STAR-CCM+ Viewer 缓冲区错误漏洞 — Simcenter STAR-CCM+ Viewer 7.8 -2021-09-14
CVE-2021-34346 Stack Based Overflow Vulnerability in NVR Storage Expansion — NVR Storage Expansion 9.8 Critical2021-09-10
CVE-2021-34345 Stack Based Overflow Vulnerability in NVR Storage Expansion — NVR Storage Expansion 9.8 Critical2021-09-10
CVE-2021-34344 Stack Buffer Overflow Vulnerability in QUSBCam2 — QUSBCam2 9.8 Critical2021-09-10
CVE-2021-34343 Buffer Overflow Vulnerability in QTS, QuTS hero, and QuTScloud — QTS 6.0 Medium2021-09-10
CVE-2021-28816 Stack Buffer Overflow Vulnerabilities in QTS, QuTS hero, and QuTScloud — QTS 7.6 High2021-09-10
CVE-2021-35994 Adobe After Effects JPEG2000 Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability — After Effects 7.8 High2021-09-02
CVE-2021-35993 Adobe After Effects PDF File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability — After Effects 7.8 High2021-09-02
CVE-2021-22791 多款 Schneider Electric 产品缓冲区错误漏洞 — Modicon M580 CPU (part numbers BMEP* and BMEH*, all versions), Modicon M340 CPU (part numbers BMXP34*, all versions), Modicon MC80 (part numbers BMKC80*, all versions), Modicon Momentum Ethernet CPU (part numbers 171CBU*, all versions), PLC Simulator for EcoStruxureª Control Expert, including all Unity Pro versions (former name of EcoStruxureª Control Expert, all versions), PLC Simulator for EcoStruxureª Process Expert including all HDCS versions (former name of EcoStruxureª Process Expert, all versions), Modicon Quantum CPU (part numbers 140CPU*, all versions), Modicon Premium CPU (part numbers TSXP5*, all versions) 6.5 -2021-09-02
CVE-2021-28564 Adobe Acrobat Reader out-of-bounds write vulnerability could lead to arbitrary code execution — Acrobat Reader 8.8 High2021-09-02
CVE-2021-28561 Adobe Acrobat Reader memory corruption vulnerability could lead to remote code execution — Acrobat Reader 8.8 High2021-09-02
CVE-2021-21086 Adobe Reader CoolType Arbitrary Stack Manipulation — Acrobat Reader 7.8 High2021-09-02
CVE-2021-36072 Adobe Bridge SGI File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability — Bridge 7.8 High2021-09-01
CVE-2021-36066 Adobe Photoshop U3D File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability — Photoshop 7.8 High2021-09-01
CVE-2021-3634 Libssh 缓冲区错误漏洞 — libssh 5.3 -2021-08-31
CVE-2021-1590 Cisco NX-OS Software system login block-for Denial of Service Vulnerability — Cisco NX-OS Software 5.3 Medium2021-08-25
CVE-2021-3713 QEMU 缓冲区错误漏洞 — QEMU 7.4 -2021-08-25
CVE-2021-32995 Horner Automation Cscape 缓冲区错误漏洞 — Cscape 7.8 -2021-08-25
CVE-2021-28622 Adobe Animate BMP File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability — Animate 7.8 -2021-08-24
CVE-2021-28607 Adobe After Effects heap corruption vulnerability could lead to arbitrary code execution — After Effects 7.8 High2021-08-24
CVE-2021-28605 Adobe After Effects memory corruption could lead to arbitrary code execution — After Effects 7.8 High2021-08-24
CVE-2021-28602 Adobe After Effects Memory corruption could lead to code execution vulnerability — After Effects 7.8 High2021-08-24
CVE-2021-28596 Adobe FrameMaker PDF File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability — FrameMaker 7.8 High2021-08-23
CVE-2021-35990 Adobe Bridge JPEG2000 Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability — Bridge 7.8 High2021-08-20
CVE-2021-35989 Adobe Bridge PDF File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability — Bridge 7.8 High2021-08-20
CVE-2021-28642 Adobe Acrobat Pro DC Out-of-Bounds Write Arbitrary Code Execution Vulnerability — Acrobat Reader 8.8 High2021-08-20
CVE-2021-28591 Adobe Illustrator PDF File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability — Illustrator 7.8 High2021-08-20
CVE-2021-28592 Adobe Illustrator JPEG2000 Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability — Illustrator 7.8 High2021-08-20

Vulnerabilities classified as CWE-787 (跨界内存写) represent 2200 CVEs. The CWE taxonomy describes the weakness; review individual CVEs for product-specific impact.