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
761 results · Clear filters · Feed
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Critical 9.8
Download Accelerator Plus DAP 10.0.6.0 SEH Buffer Overflow
Download Accelerator Plus DAP 10.0.6.0 contains a structured exception handler buffer overflow vulnerability that allows remote attackers to execute arbitrary code by crafting malicious URLs. Attackers can create specially crafted URLs with overflowing buffer…
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Critical 10.0
Heap Buffer Over-Write Vulenrabilty in timeplus-io/proton
Out-of-bounds Write vulnerability in timeplus-io proton (base/poco/Foundation/src modules). This vulnerability is associated with program files inflate.C. This issue affects proton: before 1.6.16.
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Critical 9.8
Free Float FTP 1.0 STOR Command Remote Buffer Overflow
Free Float FTP 1.0 contains a buffer overflow vulnerability in the STOR command handler that allows remote attackers to execute arbitrary code by sending a crafted STOR request with an oversized payload. Attackers can authenticate with anonymous credentials a…
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Critical 10.0
There is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege…
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Critical 9.8
In modem, there is a possible out of bounds write due to an incorrect bounds check. This could lead to remote code exec…
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Critical 9.8
In __mfc_handle_released_buf of mfc_core_isr.c, there is a possible out of bounds write due to a missing bounds check. …
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Critical 9.8
In Modem, there is a possible out of bounds write due to an incorrect bounds check. This could lead to remote code exec…
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Critical 9.8
In ns_GetUserData of ns_SmscbUtilities.c, there is a possible out of bounds write due to an incorrect bounds check. Thi…
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Critical 9.8
In ns_GetUserData of ns_SmscbUtilities.c, there is a possible out of bounds write due to an incorrect bounds check. Thi…
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Critical 9.8
Wavlink NU516U1 login.cgi sub_401A10 out-of-bounds write
A flaw has been found in Wavlink NU516U1 251208. This affects the function sub_401A10 of the file /cgi-bin/login.cgi. Executing a manipulation of the argument ipaddr can lead to out-of-bounds write. The attack may be performed from remote. The exploit has bee…
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Critical 9.4
dns: memory‑safety issue in the DNS name parser
dns_unpack_name() caches the buffer tailroom once and reuses it while appending DNS labels. As the buffer grows, the cached size becomes incorrect, and the final null terminator can be written past the buffer. With assertions disabled (default), a malicious D…
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Critical 9.1
A path traversal vulnerability exists in the ZIP extraction API of Zdir Pro 4.x. When a crafted ZIP archive is processe…
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Critical 9.8
Memory safety bugs fixed in Firefox 148 and Thunderbird 148
Memory safety bugs present in Firefox 147 and Thunderbird 147. 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 was fixed in Firefo…
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Critical 9.8
Memory safety bugs fixed in Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and Thunderbird 148
Memory safety bugs present in Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited…
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Critical 9.8
Memory safety bugs fixed in Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and Thunderbird 148
Memory safety bugs present in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. 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 co…
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Critical 9.8
WMV to AVI MPEG DVD WMV Convertor 4.6.1217 - Buffer OverFlow
WMV to AVI MPEG DVD WMV Convertor 4.6.1217 contains a buffer overflow vulnerability that allows attackers to execute arbitrary code by overwriting the license name and license code fields. Attackers can craft a malicious payload of 6000 bytes to trigger a bin…
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Critical 9.3
Critical Heap Out-of-bounds Access in `pf_cluster_stats()` via Malicious /initialpose Covariance -- Potential Remote Code Execution
navigation2 is a ROS 2 Navigation Framework and System. In 1.3.11 and earlier, a critical heap out-of-bounds write vulnerability exists in Nav2 AMCL's particle filter clustering logic. By publishing a single crafted geometry_msgs/PoseWithCovarianceStamped mes…
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Critical 9.3
In vpu_mmap of vpu_ioctl, there is a possible arbitrary address mmap due to a missing bounds check. This could lead to …
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Critical 9.8
In Thread, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation …
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Critical 9.3
In wlan STA driver, there is a possible escalation of privilege due to a missing bounds check. This could lead to local…
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Critical 9.8
YATinyWinFTP - Denial of Service
YATinyWinFTP contains a denial of service vulnerability that allows attackers to crash the FTP service by sending a 272-byte buffer with a trailing space. Attackers can exploit the service by connecting and sending a malformed command that triggers a buffer o…
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Critical 9.8
Out-of-bounds write in ixray-1.6-stcop
Out-of-bounds Write vulnerability in ixray-team ixray-1.6-stcop.This issue affects ixray-1.6-stcop: before 1.3.
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Critical 10.0
Out-of-bounds write in turso3d
Out-of-bounds Write, Divide By Zero, NULL Pointer Dereference, Use of Uninitialized Resource, Out-of-bounds Read, Reachable Assertion vulnerability in cadaver turso3d.This issue affects .
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Critical 10.0
A heap-based buffer over-read or buffer overflow vulnerability in FASTSHIFT/X-TRACK
Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in FASTSHIFT X-TRACK (Software/X-Track/USER/App/Utils/lv_img_png/PNGdec/src modules). This vulnerability is associated with program files inflate.C. This…
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Critical 10.0
a heap-based buffer overflow vulnerability in ttttupup/wxhelper via src/mongoose.
Out-of-bounds Write, Heap-based Buffer Overflow vulnerability in ttttupup wxhelper (src modules). This vulnerability is associated with program files mongoose.C. This issue affects wxhelper: through 3.9.10.19-v1.
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Critical 9.3
An improper pointer arithmetic in root-project/root at builtins/zlib/inffast.c
Vulnerability in root-project root (builtins/zlib modules). This vulnerability is associated with program files inffast.C. This issue affects root.
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Critical 10.0
A heap-based buffer over-read or buffer overflow in tildearrow/furnace
Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in tildearrow furnace (extern/zlib modules). This vulnerability is associated with program files inflate.C.
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Critical 10.0
A heap-based buffer over-read or buffer overflow vulnerability in azerothcore/azerothcore-wotlk
Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in azerothcore azerothcore-wotlk (deps/zlib modules). This vulnerability is associated with program files inflate.C. This issue affects azerothcore-wotlk…
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Critical 9.8
Buffer overflow in XPS font parse processing on Small Office Multifunction Printers and Laser Printers(*) which may all…
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Critical 9.8
Buffer overflow in Address Book attribute tag processing on Small Office Multifunction Printers(*) which may allow an a…
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Critical 9.8
Buffer overflow in XPS font fpgm data processing on Small Office Multifunction Printers and Laser Printers(*) which may…
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Critical 9.8
Buffer overflow in CPCA list processing on Small Office Multifunction Printers and Laser Printers(*) which may allow an…
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Critical 9.8
Buffer overflow in XML processing of XPS file in Small Office Multifunction Printers and Laser Printers(*) which may al…
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Critical 9.8
Buffer overflow in print job processing by WSD on Small Office Multifunction Printers and Laser Printers(*) which may a…
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Critical 9.8
Ether_MP3_CD_Burner 1.3.8 - Buffer Overflow (SEH)
Ether MP3 CD Burner 1.3.8 contains a buffer overflow vulnerability in the registration name field that allows remote code execution. Attackers can craft a malicious payload to overwrite SEH handlers and execute a bind shell on port 3110 by exploiting improper…
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Critical 9.8
Cmder Console Emulator 1.3.18 - 'Cmder.exe' Denial of Service (PoC)
Cmder Console Emulator 1.3.18 contains a buffer overflow vulnerability that allows attackers to trigger a denial of service condition through a maliciously crafted .cmd file. Attackers can create a specially constructed .cmd file with repeated characters to o…
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Critical 9.8
Kingdia CD Extractor 3.0.2 - Buffer Overflow (SEH)
Kingdia CD Extractor 3.0.2 contains a buffer overflow vulnerability in the registration name field that allows attackers to execute arbitrary code. Attackers can craft a malicious payload exceeding 256 bytes to overwrite Structured Exception Handler and gain …
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Critical 9.8
10-Strike Network Inventory Explorer Pro 9.31 - Buffer Overflow (SEH)
10-Strike Network Inventory Explorer Pro 9.31 contains a buffer overflow vulnerability in the text file import functionality that allows remote code execution. Attackers can craft a malicious text file with carefully constructed payload to trigger a reverse s…
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Critical 9.8
svcrdma: use rc_pageoff for memcpy byte offset
In the Linux kernel, the following vulnerability has been resolved: svcrdma: use rc_pageoff for memcpy byte offset svc_rdma_copy_inline_range added rc_curpage (page index) to the page base instead of the byte offset rc_pageoff. Use rc_pageoff so copies land w…
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Critical 9.1
An issue was discovered in Samsung Mobile Processor, Wearable Processor, and Modem Exynos 980, 990, 850, 1080, 2100, 12…