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
3,640 results · Clear filters · Feed
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High 7.8
This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. U…
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High 7.8
This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. U…
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High 7.8
This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. U…
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High 7.8
This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. U…
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High 8.2
contiki-ng BLE-L2CAP contains Improper size validation of L2CAP frames
Contiki-NG is an open-source, cross-platform operating system for Next-Generation IoT devices. Versions prior to and including 4.8 are vulnerable to an out-of-bounds write that can occur in the BLE-L2CAP module. The Bluetooth Low Energy - Logical Link Control…
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High 7.8
In Mfc_Transceive of phNxpExtns_MifareStd.cpp, there is a possible out of bounds write due to a missing bounds check. T…
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High 8.8
TrendNet Wireless AC Easy-Upgrader TEW-820AP v1.0R, firmware version 1.01.B01 was discovered to contain a stack overflo…
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High 8.8
TrendNet Wireless AC Easy-Upgrader TEW-820AP v1.0R, firmware version 1.01.B01 was discovered to contain a stack overflo…
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High 7.8
A stack-based buffer overflow in ParseColors in libXm in Common Desktop Environment 1.6 can be exploited by local low-p…
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High 7.8
Adobe Acrobat Reader DC AcroForm Annotation Out-Of-Bounds Write Remote Code Execution Vulnerability
Adobe Acrobat Reader versions 22.003.20282 (and earlier), 22.003.20281 (and earlier) and 20.005.30418 (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. Exploita…
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High 7.8
Adobe Acrobat Reader DC Font Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
Adobe Acrobat Reader versions 22.003.20282 (and earlier), 22.003.20281 (and earlier) and 20.005.30418 (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. Exploita…
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High 7.8
Fuji Electric Tellus Lite V-Simulator versions 4.0.12.0 and prior are vulnerable to an out-of-bounds write which may al…
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High 7.8
Adobe InDesign Font Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
Adobe InDesign version 18.0 (and earlier), 17.4 (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…
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High 7.8
Adobe InCopy Font Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
Adobe InCopy versions 18.0 (and earlier), 17.4 (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 …
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High 7.8
Adobe InCopy Font Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
Adobe InCopy versions 18.0 (and earlier), 17.4 (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 …
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High 7.8
Adobe InDesign Font Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
Adobe InDesign version 18.0 (and earlier), 17.4 (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…
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High 7.5
Junos OS: SRX Series: The flow processing daemon (flowd) will crash when Unified Policies are used with IPv6 and certain dynamic applications are rejected by the device
An Out-of-Bounds Write vulnerability in Flow Processing Daemon (flowd) of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause Denial of Service (DoS). On SRX Series devices using Unified Policies with IPv6, when a specific IPv…
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High 7.5
Junos OS: MX Series and SRX Series: The flow processing daemon (flowd) will crash when specific H.323 packets are received
An Out-of-Bounds Write vulnerability in the H.323 ALG of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause Denial of Service (DoS). On all MX Series and SRX Series platform, when H.323 ALG is enabled and specific H.323 packe…
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High 7.1
Insufficient input validation in SVC_ECC_PRIMITIVE system call in a compromised user application or ABL may allow an at…
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High 7.1
Insufficient bounds checking in ASP (AMD Secure Processor) firmware while handling BIOS mailbox commands, may allow an …
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High 7.8
Insufficient input validation in SYS_KEY_DERIVE system call in a compromised user application or ABL may allow an attac…
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High 8.8
Heap buffer overflow in Network Service in Google Chrome prior to 109.0.5414.74 allowed an attacker who convinced a use…
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High 8.8
Heap buffer overflow in Platform Apps in Google Chrome on Chrome OS prior to 109.0.5414.74 allowed an attacker who conv…
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High 8.8
Heap buffer overflow in libphonenumber in Google Chrome prior to 109.0.5414.74 allowed a remote attacker to potentially…
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High 7.5
An issue in MPD (Music Player Daemon) v0.23.10 allows attackers to cause a Denial of Service (DoS) via a crafted input.
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High 8.4
Stack based buffer overflow in Core
Memory corruption due to stack-based buffer overflow in Core
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High 7.5
Buffer over-read in WLAN
Transient DOS due to buffer over-read in WLAN while processing 802.11 management frames.
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High 7.5
Buffer over-read in WLAN
Transient DOS due to buffer over-read in WLAN while parsing WLAN CSA action frames.
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High 8.2
Buffer over-read in WLAN
Information disclosure due to buffer over-read in WLAN while parsing BTM action frame.
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High 8.2
Buffer over-read in WLAN
Information disclosure due to buffer over-read in WLAN while WLAN frame parsing due to missing frame length check.
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High 7.3
Information exposure in Powerline Communication Firmware
Memory corruption due to information exposure in Powerline Communication Firmware while sending different MMEs from a single, unassociated device.
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High 8.2
Buffer over-read in Bluetooth HOST
Information disclosure due to buffer over-read in Bluetooth HOST while processing GetFolderItems and GetItemAttribute Cmds from peer device.
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High 8.2
Improper Input Validation in Automotive
Memory corruption in Automotive due to improper input validation.
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High 7.8
Libde265 1.0.9 is vulnerable to Buffer Overflow in function void put_qpel_fallback<unsigned short>
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High 7.8
GPAC MP4box 2.1-DEV-rev644-g5c4df2a67 is vulnerable to Buffer Overflow in gf_bs_read_data
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High 7.8
GPAC MP4Box 2.1-DEV-rev649-ga8f438d20 is vulnerable to Buffer Overflow via media_tools/av_parsers.c:4988 in gf_media_na…
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High 7.3
Out-of-bounds Write in vim/vim
Out-of-bounds Write in GitHub repository vim/vim prior to 9.0.1145.
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High 7.8
In gps, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of p…
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High 7.8
Out-of-bounds write vulnerability in V-SFT v6.1.7.0 and earlier and TELLUS v4.0.12.0 and earlier allows a local attacke…
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High 7.8
Out-of-bounds write vulnerability in V-Server v4.0.12.0 and earlier allows a local attacker to obtain the information a…