Weakness (CWE)
CWE-787: Out-of-bounds Write
The product writes data past the end, or before the beginning, of the intended buffer.
How to prevent it (7 mitigations)
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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 language's interface to native code may still be subject to overflows, even if the language itself is theoretically safe.
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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.
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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 canary-based detection in detail.
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Implementation
Consider 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 loop and make sure there is no danger of writing past the allocated space.
- If necessary, truncate all input strings to a reasonable length before passing them to the copy and concatenation functions.
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Operation, Build and Compilation
Run 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 modules may be similarly realigned if their default memory addresses conflict with other modules, in a process known as "rebasing" (for Windows) and "prelinking" (for Linux) [REF-1332] using randomly generated addresses. ASLR for libraries cannot be used in conjunction with prelink since it would require relocating the libraries at run-time, defeating the whole purpose of prelinking.
For more information on these techniques see D3-SAOR (Segment Address Offset Randomization) from D3FEND [REF-1335].
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Operation
Use a CPU and operating system that offers Data Execution Protection (using hardware NX or XD bits) or the equivalent techniques that simulate this feature in software, such as PaX [REF-60] [REF-61]. These techniques ensure that any instruction executed is exclusively at a memory address that is part of the code segment.
For more information on these techniques see D3-PSEP (Process Segment Execution Prevention) from D3FEND [REF-1336].
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Implementation
Replace unbounded copy functions with analogous functions that support length arguments, such as strcpy with strncpy. Create these if they are not available.
Source: MITRE CWE-787
6,166 results · Feed
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High 7.2
An out of bounds memory write when processing the AMD PSP1 Configuration Block (APCB) could allow an attacker with acce…
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High 8.8
Inappropriate implementation in V8 in Google Chrome prior to 127.0.6533.99 allowed a remote attacker to potentially exp…
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High 8.8
Out of bounds memory access in ANGLE in Google Chrome prior to 127.0.6533.99 allowed a remote attacker to potentially e…
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High 8.8
Insufficient checks when processing graphics shared memory could have led to memory corruption. This could be leveraged…
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Medium 5.8
Dell iDRAC Service Module version 5.3.0.0 and prior, contain a Out of bound Write Vulnerability. A privileged local att…
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Low 3.1
Dell iDRAC Service Module version 5.3.0.0 and prior contains Out of bound write Vulnerability. A privileged local attac…
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Medium 4.8
Dell iDRAC Service Module version 5.3.0.0 and prior, contain a Out of bound Write Vulnerability. A privileged local att…
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Medium 4.8
Dell iDRAC Service Module version 5.3.0.0 and prior, contain an Out of bound Read Vulnerability. A privileged local att…
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Medium 5.5
A heap buffer overflow in the function cp_block() (/vendor/cute_png.h) of hicolor v0.5.0 allows attackers to cause a De…
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Medium 5.5
A stack overflow in the function cp_dynamic() (/vendor/cute_png.h) of hicolor v0.5.0 allows attackers to cause a Denial…
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Medium 5.5
An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in iOS 16.7.9 and iPadOS…
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Medium 5.7
Dell Edge Gateway BIOS, versions 3200 and 5200, contains an out-of-bounds write vulnerability. A local authenticated ma…
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Critical 9.8
Tenda FH1201 v1.2.0.14 was discovered to contain a stack-based buffer overflow vulnerability via the list1 parameter at…
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High 7.8
Memory Corruption Due to Improper Length Check in NI LabVIEW
A memory corruption issue due to an improper length check in NI LabVIEW may disclose information or result in arbitrary code execution. Successful exploitation requires an attacker to provide a user with a specially crafted VI. This vulnerability affects NI L…
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High 7.8
Memory Corruption Due to Improper Length Checks in LabVIEW tdcore.dll
A memory corruption issue due to an improper length check in LabVIEW tdcore.dll may disclose information or result in arbitrary code execution. Successful exploitation requires an attacker to provide a user with a specially crafted VI. This vulnerability affe…
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High 7.5
Out-of-bounds Write in SixLabors ImageSharp
ImageSharp is a 2D graphics API. An Out-of-bounds Write vulnerability has been found in the ImageSharp gif decoder, allowing attackers to cause a crash using a specially crafted gif. This can potentially lead to denial of service. All users are advised to upg…
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High 8.6
Eclipse Parsson stack overflow with deeply nested objects
In Eclipse Parsson before 1.0.4 and 1.1.3, a document with a large depth of nested objects can allow an attacker to cause a Java stack overflow exception and denial of service. Eclipse Parsson allows processing (e.g. parse, generate, transform and query) JSON…
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High 7.5
Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Supported versions t…
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High 8.8
Out of bounds write in SwiftShader in Google Chrome prior to 117.0.5938.62 allowed a remote attacker to perform an out …
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High 7.1
CWE-787: Out-of-Bounds Write vulnerability exists that could cause local denial-of-service, or kernel memory leak when …
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High 8.2
Out-of-bounds write vulnerability exists in Ricoh MFPs and printers. If a remote attacker sends a specially crafted req…
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Medium 5.7
Dell Edge Gateway BIOS, versions 3200 and 5200, contains an out-of-bounds write vulnerability. A local authenticated ma…
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High 8.4
Out-of-bounds Write in Delta Electronics CNCSoft-G2
Delta Electronics CNCSoft-G2 lacks proper validation of user-supplied data, which can result in a memory corruption condition. If a target visits a malicious page or opens a malicious file an attacker can leverage this vulnerability to execute code in the con…
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High 7.8
In RGXFWChangeOSidPriority of rgxfwutils.c, there is a possible arbitrary code execution due to a missing bounds check.…
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High 7.8
Adobe Indesign WMF File Parsing Out Of Bound Write
InDesign Desktop versions ID19.3, ID18.5.2 and earlier are affected by an out-of-bounds write vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim…
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High 8.8
Memory safety bugs fixed in Firefox 128 and Thunderbird 128
Memory safety bugs present in Firefox 127 and Thunderbird 127. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 1…
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High 7.8
A vulnerability has been identified in Simcenter Femap (All versions < V2406). The affected application contains an out…
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High 8.1
A vulnerability was discovered in Samsung Mobile Processor, Wearable Processor, and Modems with versions Exynos 9820, E…
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High 8.1
A vulnerability was discovered in Samsung Wearable Processor and Modems with versions Exynos 9110, Exynos Modem 5123, E…
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Medium 6.3CVE-2023-48194 Public exploit
Vulnerability in Tenda AC8v4 .V16.03.34.09 due to sscanf and the last digit of s8 being overwritten with \x0. After exe…
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Medium 5.5
Mommy Heather Advanced Backups up to v3.5.3 allows attackers to write arbitrary files via restoring a crafted back up.
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High 8.8
Artifex Ghostscript before 10.03.0 has a heap-based overflow when PDFPassword (e.g., for runpdf) has a \000 byte in the…
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High 7.8
Qemu-kvm: 'qemu-img info' leads to host file read/write
A flaw was found in the QEMU disk image utility (qemu-img) 'info' command. A specially crafted image file containing a `json:{}` value describing block devices in QMP could cause the qemu-img process on the host to consume large amounts of memory or CPU time,…
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High 8.2
Arkcompiler Ets Runtime has an out-of-bounds write vulnerability
in OpenHarmony v4.0.0 and prior versions allow a remote attacker arbitrary code execution in pre-installed apps through out-of-bounds write.
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High 8.2
Arkcompiler Ets Runtime has an out-of-bounds write vulnerability
in OpenHarmony v4.0.0 and prior versions allow a remote attacker arbitrary code execution in pre-installed apps through out-of-bounds write.
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High 8.2
Arkcompiler Ets Runtime has an out-of-bounds write vulnerability
in OpenHarmony v4.0.0 and prior versions allow a remote attacker arbitrary code execution in pre-installed apps through out-of-bounds write.
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High 8.2
Arkcompiler Ets Runtime has an out-of-bounds read vulnerability
in OpenHarmony v4.0.0 and prior versions allow a remote attacker arbitrary code execution in pre-installed apps through out-of-bounds read and write.
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Medium 5.5
Out-of-Bounds Write vulnerability in Jungo WinDriver before 12.1.0 allows local attackers to cause a Windows blue scree…
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High 7.8
Vulnerability in Realtek RtsPer driver for PCIe Card Reader (RtsPer.sys) before 10.0.22000.21355 and Realtek RtsUer dri…
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Medium 4.4
Out-of-Bounds Write vulnerability in Jungo WinDriver before 12.6.0 allows local attackers to cause a Windows blue scree…