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)
-
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.
-
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 canary-based detection in detail.
-
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.
-
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].
-
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].
-
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
6,183 results · Feed
-
Medium 6.7
An out-of-bounds write vulnerability was found in the Linux kernel's SLIMpro I2C device driver. The userspace "data->bl…
-
High 8.8
Heap buffer overflow in sqlite in Google Chrome prior to 112.0.5615.137 allowed a remote attacker to potentially exploi…
-
High 8.8
Out of bounds memory access in Service Worker API in Google Chrome prior to 112.0.5615.137 allowed a remote attacker to…
-
High 8.8
Out of bounds memory access in Service Worker API in Google Chrome prior to 112.0.5615.137 allowed a remote attacker to…
-
High 7.8
In inflate of inflate.c, there is a possible out of bounds write due to a heap buffer overflow. This could lead to loca…
-
High 8.8
In nci_snd_set_routing_cmd of nci_hmsgs.cc, there is a possible out of bounds write due to a missing bounds check. This…
-
High 7.8
In avdt_scb_hdl_pkt_no_frag of avdt_scb_act.cc, there is a possible out of bounds write due to an incorrect bounds chec…
-
Medium 6.6
In acc_ctrlrequest_composite of f_accessory.c, there is a possible out of bounds write due to a missing bounds check. T…
-
High 7.1
A stack-based buffer overflow vulnerability was found in the ADM
A stack-based buffer overflow vulnerability was found in the ASUSTOR Data Master (ADM) due to the lack of data size validation. An attacker can exploit this vulnerability to execute arbitrary code. Affected ADM versions include: 4.0.6.REG2, 4.1.0 and below as…
-
Critical 9.8
D-Link DIR823G_V1.0.2B05 was discovered to contain a stack overflow via the NewPassword parameters in SetPasswdSettings.
-
High 7.8
An Out-Of-Bounds Write Vulnerability in Autodesk® FBX® SDK version 2020 or prior may lead to code execution through mal…
-
High 7.8
A malicious actor may convince a victim to open a malicious USD file that may trigger an out-of-bounds write vulnerabil…
-
Critical 9.1
The HwPCAssistant module has the out-of-bounds read/write vulnerability. Successful exploitation of this vulnerability …
-
High 7.8
A heap-based buffer overflow exists in the DXF file reading procedure in Open Design Alliance Drawings SDK before 2023.…
-
High 7.8
Parsing of DWG files in Open Design Alliance Drawings SDK before 2023.6 lacks proper validation of the length of user-s…
-
High 8.8
kvmtool through 39181fc allows an out-of-bounds write, related to virtio/balloon.c and virtio/pci.c. This allows a gues…
-
High 7.5
In lldpd before 1.0.13, when decoding SONMP packets in the sonmp_decode function, it's possible to trigger an out-of-bo…
-
Medium 6.8
An issue was discovered in Samsung Exynos Mobile Processor, Automotive Processor and Modem for Exynos Modem 5123, Exyno…
-
Medium 6.8
An issue was discovered in Samsung Exynos Mobile Processor, Automotive Processor and Modem for Exynos Modem 5123, Exyno…
-
Medium 6.8
An issue was discovered in Samsung Exynos Mobile Processor, Automotive Processor and Modem for Exynos Modem 5123, Exyno…
-
High 7.8
A maliciously crafted X_B file when parsed through Autodesk® AutoCAD® 2023 could lead to memory corruption vulnerabilit…
-
Medium 6.8
An issue was discovered in Samsung Exynos Mobile Processor, Automotive Processor and Modem for Exynos Modem 5123, Exyno…
-
High 8.8
mp4v2 v2.0.0 was discovered to contain a heap buffer overflow via the MP4GetVideoProfileLevel function at /src/mp4.cpp.
-
Medium 6.8
An issue was discovered in Samsung Exynos Mobile Processor, Automotive Processor and Modem for Exynos Modem 5123, Exyno…
-
High 7.8
ZDI-CAN-20317: Adobe Substance 3D Designer DAE File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
Adobe Substance 3D Designer version 12.4.0 (and earlier) is 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 victi…
-
Medium 5.5
A heap-based buffer overflow issue was discovered in ImageMagick's ImportMultiSpectralQuantum() function in MagickCore/…
-
High 7.8
ZDI-CAN-18255: Adobe Digital Editions PDF File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
Adobe Digital Editions version 4.5.11.187303 (and earlier) is 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 vic…
-
High 7.8
Adobe Acrobat parsing PDF Out-of-bounds Write Arbitrary code execution
Adobe Acrobat Reader versions 23.001.20093 (and earlier) and 20.005.30441 (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 …
-
High 7.8
ZDI-CAN-20284: Adobe Dimension USDZ File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
Adobe Dimension version 3.4.8 (and earlier) is 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 must open a…
-
High 7.8
Adobe Dimension has an arbitrary address write vulnerability when parsing USDZ files
Adobe Dimension version 3.4.8 (and earlier) is 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 must open a…
-
Medium 5.5
In media service, there is a missing permission check. This could lead to local denial of service in media service.
-
High 8.8
An issue was discovered in ChipsetSvcSmm in Insyde InsydeH2O with kernel 5.0 through 5.5. There is insufficient input v…
-
High 8.4
An issue was discovered in IhisiSmm in Insyde InsydeH2O with kernel 5.0 through 5.5. IHISI subfunction execution may co…
-
High 8.8
An issue was discovered in IhisiSmm in Insyde InsydeH2O with kernel 5.0 through 5.5. A malicious host OS can invoke an …
-
High 8.8
An issue was discovered in IhisiSmm in Insyde InsydeH2O with kernel 5.0 through 5.5. It is possible to write to an atta…
-
Medium 6.4
praecis_parse in ntpd/refclock_palisade.c in NTP 4.2.8p15 has an out-of-bounds write. Any attack method would be comple…
-
Medium 5.6
mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write in the cp<cpdec while loop. An adversary may be …
-
Medium 5.6
mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write when adding a '\0' character. An adversary may b…
-
Medium 5.6
mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write when adding a decimal point. An adversary may be…
-
Medium 5.6
mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write when copying the trailing number. An adversary m…