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
Tenda AX1803 v1.0.0.1 contains a stack overflow via the iptv.city.vlan parameter in the function formSetIptv
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Critical 9.8
Tenda AX1803 v1.0.0.1 contains a stack overflow via the iptv.stb.port parameter in the function getIptvInfo.
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Critical 9.8
Tenda AX1803 v1.0.0.1 contains a stack overflow via the iptv.city.vlan parameter in the function formGetIptv.
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Critical 9.8
Tenda AX1803 v1.0.0.1 contains a stack overflow via the adv.iptv.stbpvid parameter in the function formSetIptv.
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Critical 9.8
Tenda AX1803 v1.0.0.1 contains a stack overflow via the iptv.stb.port parameter in the function setIptvInfo.
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Critical 9.8
Tenda AX1803 v1.0.0.1 contains a stack overflow via the iptv.stb.mode parameter in the function setIptvInfo.
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Critical 9.8
Tenda AX1803 v1.0.0.1 contains a stack overflow via the adv.iptv.stballvlans parameter in the function getIptvInfo.
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Critical 9.8
Tenda AX1803 v1.0.0.1 contains a stack overflow via the adv.iptv.stbpvid parameter in the function setIptvInfo.
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Critical 9.8
Tenda A18 v15.13.07.09 was discovered to contain a stack overflow via the devName parameter in the formSetDeviceName fu…
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Critical 9.8
IrfanView B3D PlugIns before version 4.56 has a B3d.dll!+214f heap-based out-of-bounds write.
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Critical 9.8
IrfanView B3D PlugIns before version 4.56 has a B3d.dll!+27ef heap-based out-of-bounds write.
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Critical 9.8
IrfanView B3D PlugIns before version 4.56 has a B3d.dll!+1cbf heap-based out-of-bounds write.
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Critical 9.8
handle_request in http.c in cherry through 4b877df has an sscanf stack-based buffer overflow via a long URI, leading to…
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Critical 9.8
route in main.c in Pico HTTP Server in C through f3b69a6 has an sprintf stack-based buffer overflow via a long URI, lea…
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Critical 9.3
Unvalidated input in Silicon Labs TrustZone implementation leads to accessing Trusted memory region
An unvalidated input in Silicon Labs TrustZone implementation in v4.3.x and earlier of the Gecko SDK allows an attacker to access the trusted region of memory from the untrusted region.
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Critical 9.8
In Modem IMS Stack, there is a possible out of bounds write due to a missing bounds check. This could lead to remote co…
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Critical 9.8
hyavijava stack overflow vulnerability
hyavijava v6.0.07.1 was discovered to contain a stack overflow via the ResultConverter.convert2Xml method.
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Critical 9.8
Tenda W9 V1.0.0.7(4456)_CN was discovered to contain a stack overflow via the function formSetUplinkInfo.
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Critical 9.8CVE-2023-46257 EPSS 11%
An attacker sending specially crafted data packets to the Mobile Device Server can cause memory corruption which could …
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Critical 9.8
An attacker sending specially crafted data packets to the Mobile Device Server can cause memory corruption which could …
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Critical 9.8CVE-2023-41727 EPSS 36%
An attacker sending specially crafted data packets to the Mobile Device Server can cause memory corruption which could …
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Critical 9.0
Unvalidated input in Silicon Labs PSA Attestation service leads to secure memory access from non-secure memory
An unvalidated input in a library function responsible for communicating between secure and non-secure memory in Silicon Labs TrustZone implementation allows reading/writing of memory in the secure region of memory from the non-secure region of memory.
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Critical 9.8
TOTOLink A7000R V9.1.0u.6115_B20201022 has a stack overflow vulnerability via setOpModeCfg.
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Critical 9.8
Heap Buffer Overflow vulnerability in GPAC version 2.3-DEV-rev617-g671976fcc-master, allows attackers to execute arbitr…
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Critical 9.8
Tenda W30E V16.01.0.12(4843) was discovered to contain a stack overflow via the function formAdvancedSetListSet.
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Critical 9.1
Azure RTOS NetX Duo Remote Code Execution Vulnerability
Azure RTOS NetX Duo is a TCP/IP network stack designed specifically for deeply embedded real-time and IoT applications. An attacker can cause remote code execution due to memory overflow vulnerabilities in Azure RTOS NETX Duo. The affected components include …
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Critical 9.8
Azure RTOS NetX Duo Remote Code Execution Vulnerability
Azure RTOS NetX Duo is a TCP/IP network stack designed specifically for deeply embedded real-time and IoT applications. An attacker can cause remote code execution due to memory overflow vulnerabilities in Azure RTOS NETX Duo. The affected components include …
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Critical 9.8
A maliciously crafted PRT file when parsed through Autodesk AutoCAD 2024 and 2023 can be used to cause an Out-Of-Bounds…
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Critical 9.1
Tenda AX1806 V1.0.0.1 contains a heap overflow vulnerability in setSchedWifi function, in which the src and v12 are dir…
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Critical 9.8
TOTOLINK LR1200GB V9.1.0u.6619_B20230130 was discovered to contain a stack overflow via the password parameter in the f…
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Critical 9.8
VMware vCenter Server Out-of-Bounds Write Vulnerability
vCenter Server contains an out-of-bounds write vulnerability in the implementation of the DCERPC protocol. A malicious actor with network access to vCenter Server may trigger an out-of-bounds write potentially leading to remote code execution.
KEV Jan 22, 2024 -
Critical 9.8
Tenda W18E V16.01.0.8(1576) contains a stack overflow vulnerability via the portMirrorMirroredPorts parameter in the fo…
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Critical 9.8
Memory safety bugs present in Firefox 117, Firefox ESR 115.2, and Thunderbird 115.2. Some of these bugs showed evidence…
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Critical 9.8
A compromised content process could have provided malicious data to `FilterNodeD2D1` resulting in an out-of-bounds writ…
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Critical 9.8
An out-of-bounds write vulnerability exists in the allocate_buffer_for_jpeg_decoding functionality of Accusoft ImageGea…
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Critical 9.8
Wibu: Buffer Overflow in CodeMeter Runtime
A heap buffer overflow vulnerability in Wibu CodeMeter Runtime network service up to version 7.60b allows an unauthenticated, remote attacker to achieve RCE and gain full access of the host system.
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Critical 9.8
Heap-based buffer overflow in ZBar
A heap-based buffer overflow exists in the qr_reader_match_centers function of ZBar 0.23.90. Specially crafted QR codes may lead to information disclosure and/or arbitrary code execution. To trigger this vulnerability, an attacker can digitally input the mali…
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Critical 9.8
A stack-based buffer overflow vulnerability exists in the lookup_sequence function of ZBar 0.23.90. Specially crafted Q…
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Critical 9.8
Tenda AC10 v4 US_AC10V4.0si_V16.03.10.13_cn was discovered to contain a stack overflow via parameter macFilterType and …
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Critical 9.8
Second Stage Gecko Bootloader GBL Parser Buffer Overrun Vulnerability
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'), Out-of-bounds Write, Download of Code Without Integrity Check vulnerability in Silicon Labs Gecko Bootloader on ARM (Firmware Update File Parser modules) allows Code Injection, Authentica…